---
_id: '14802'
abstract:
- lang: eng
text: Frequency-stable lasers form the back bone of precision measurements in science
and technology. Such lasers typically attain their stability through frequency
locking to reference cavities. State-of-the-art locking performances to date had
been achieved using frequency modulation based methods, complemented with active
drift cancellation systems. We demonstrate an all passive, modulation-free laser-cavity
locking technique (squash locking) that utilizes changes in spatial beam ellipticity
for error signal generation, and a coherent polarization post-selection for noise
resilience. By comparing two identically built proof-of-principle systems, we
show a frequency locking instability of 5×10−7 relative to
the cavity linewidth at 10 s averaging. The results surpass the demonstrated performances
of methods engineered over the last five decades, potentially enabling an advancement
in the precision control of lasers, while creating avenues for bridging the performance
gaps between industrial grade lasers with scientific ones due to the afforded
simplicity and scalability.
acknowledgement: We thank Rishabh Sahu and Sebastian Wald for technical contributions
to the experiment. Funding by Institute of Science and Technology Austria.
article_processing_charge: Yes
article_type: original
arxiv: 1
author:
- first_name: Fritz R
full_name: Diorico, Fritz R
id: 2E054C4C-F248-11E8-B48F-1D18A9856A87
last_name: Diorico
orcid: 0000-0002-4947-8924
- first_name: Artem
full_name: Zhutov, Artem
id: 0f02ed6a-b514-11ee-b891-8379c5f19cb7
last_name: Zhutov
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
date_created: 2024-01-15T10:25:38Z
date_published: 2024-01-20T00:00:00Z
date_updated: 2024-08-19T09:52:20Z
day: '20'
ddc:
- '530'
department:
- _id: OnHo
doi: 10.1364/optica.507451
external_id:
arxiv:
- '2202.13212'
file:
- access_level: open_access
checksum: eb99ca7d0fe73e22f121875175546ed7
content_type: application/pdf
creator: dernst
date_created: 2024-01-17T08:53:16Z
date_updated: 2024-01-17T08:53:16Z
file_id: '14824'
file_name: 2023_Optica_Diorico.pdf
file_size: 4558986
relation: main_file
success: 1
file_date_updated: 2024-01-17T08:53:16Z
has_accepted_license: '1'
intvolume: ' 11'
issue: '1'
keyword:
- Atomic and Molecular Physics
- and Optics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
page: 26-31
publication: Optica
publication_identifier:
issn:
- 2334-2536
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
status: public
title: 'Laser-cavity locking utilizing beam ellipticity: accessing the 10−7
instability scale relative to cavity linewidth'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2024'
...
---
_id: '14828'
abstract:
- lang: eng
text: Production of hydrogen at large scale requires development of non-noble, inexpensive,
and high-performing catalysts for constructing water-splitting devices. Herein,
we report the synthesis of Zn-doped NiO heterostructure (ZnNiO) catalysts at room
temperature via a coprecipitation method followed by drying (at 80 °C, 6 h) and
calcination at an elevated temperature of 400 °C for 5 h under three distinct
conditions, namely, air, N2, and vacuum. The vacuum-synthesized catalyst demonstrates
a low overpotential of 88 mV at −10 mA cm–2 and a small Tafel slope of 73 mV dec–1
suggesting relatively higher charge transfer kinetics for hydrogen evolution reactions
(HER) compared with the specimens synthesized under N2 or O2 atmosphere. It also
demonstrates an oxygen evolution (OER) overpotential of 260 mV at 10 mA cm–2 with
a low Tafel slope of 63 mV dec–1. In a full-cell water-splitting device, the vacuum-synthesized
ZnNiO heterostructure demonstrates a cell voltage of 1.94 V at 50 mA cm–2 and
shows remarkable stability over 24 h at a high current density of 100 mA cm–2.
It is also demonstrated in this study that Zn-doping, surface, and interface engineering
in transition-metal oxides play a crucial role in efficient electrocatalytic water
splitting. Also, the results obtained from density functional theory (DFT + U
= 0–8 eV), where U is the on-site Coulomb repulsion parameter also known as Hubbard
U, based electronic structure calculations confirm that Zn doping constructively
modifies the electronic structure, in both the valence band and the conduction
band, and found to be suitable in tailoring the carrier’s effective masses of
electrons and holes. The decrease in electron’s effective masses together with
large differences between the effective masses of electrons and holes is noticed,
which is found to be mainly responsible for achieving the best water-splitting
performance from a 9% Zn-doped NiO sample prepared under vacuum.
acknowledgement: This work was supported by the Technology Innovation Program (20011622,
Development of Battery System Applied High-Efficiency Heat Control Polymer and Part
Component) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea). Author
acknowledge to Prof. Tsunehiro Takeuchi from Toyota Technological Institute, Nagoya,
Japan for the support of computational resources.
article_processing_charge: No
article_type: original
author:
- first_name: Gundegowda Kalligowdanadoddi
full_name: Kiran, Gundegowda Kalligowdanadoddi
last_name: Kiran
- first_name: Saurabh
full_name: Singh, Saurabh
id: 12d625da-9cb3-11ed-9667-af09d37d3f0a
last_name: Singh
orcid: 0000-0003-2209-5269
- first_name: Neelima
full_name: Mahato, Neelima
last_name: Mahato
- first_name: Thupakula Venkata Madhukar
full_name: Sreekanth, Thupakula Venkata Madhukar
last_name: Sreekanth
- first_name: Gowra Raghupathy
full_name: Dillip, Gowra Raghupathy
last_name: Dillip
- first_name: Kisoo
full_name: Yoo, Kisoo
last_name: Yoo
- first_name: Jonghoon
full_name: Kim, Jonghoon
last_name: Kim
citation:
ama: Kiran GK, Singh S, Mahato N, et al. Interface engineering modulation combined
with electronic structure modification of Zn-doped NiO heterostructure for efficient
water-splitting activity. ACS Applied Energy Materials. 2024;7(1):214-229.
doi:10.1021/acsaem.3c02519
apa: Kiran, G. K., Singh, S., Mahato, N., Sreekanth, T. V. M., Dillip, G. R., Yoo,
K., & Kim, J. (2024). Interface engineering modulation combined with electronic
structure modification of Zn-doped NiO heterostructure for efficient water-splitting
activity. ACS Applied Energy Materials. American Chemical Society. https://doi.org/10.1021/acsaem.3c02519
chicago: Kiran, Gundegowda Kalligowdanadoddi, Saurabh Singh, Neelima Mahato, Thupakula
Venkata Madhukar Sreekanth, Gowra Raghupathy Dillip, Kisoo Yoo, and Jonghoon Kim.
“Interface Engineering Modulation Combined with Electronic Structure Modification
of Zn-Doped NiO Heterostructure for Efficient Water-Splitting Activity.” ACS
Applied Energy Materials. American Chemical Society, 2024. https://doi.org/10.1021/acsaem.3c02519.
ieee: G. K. Kiran et al., “Interface engineering modulation combined with
electronic structure modification of Zn-doped NiO heterostructure for efficient
water-splitting activity,” ACS Applied Energy Materials, vol. 7, no. 1.
American Chemical Society, pp. 214–229, 2024.
ista: Kiran GK, Singh S, Mahato N, Sreekanth TVM, Dillip GR, Yoo K, Kim J. 2024.
Interface engineering modulation combined with electronic structure modification
of Zn-doped NiO heterostructure for efficient water-splitting activity. ACS Applied
Energy Materials. 7(1), 214–229.
mla: Kiran, Gundegowda Kalligowdanadoddi, et al. “Interface Engineering Modulation
Combined with Electronic Structure Modification of Zn-Doped NiO Heterostructure
for Efficient Water-Splitting Activity.” ACS Applied Energy Materials,
vol. 7, no. 1, American Chemical Society, 2024, pp. 214–29, doi:10.1021/acsaem.3c02519.
short: G.K. Kiran, S. Singh, N. Mahato, T.V.M. Sreekanth, G.R. Dillip, K. Yoo, J.
Kim, ACS Applied Energy Materials 7 (2024) 214–229.
date_created: 2024-01-17T12:48:35Z
date_published: 2024-01-08T00:00:00Z
date_updated: 2025-07-22T14:07:29Z
day: '08'
department:
- _id: MaIb
doi: 10.1021/acsaem.3c02519
external_id:
isi:
- '001138342900001'
oaworkID:
- w4389780443
intvolume: ' 7'
isi: 1
issue: '1'
keyword:
- Electrical and Electronic Engineering
- Materials Chemistry
- Electrochemistry
- Energy Engineering and Power Technology
- Chemical Engineering (miscellaneous)
language:
- iso: eng
month: '01'
oa_version: None
oaworkID: 1
page: 214-229
publication: ACS Applied Energy Materials
publication_identifier:
issn:
- 2574-0962
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Interface engineering modulation combined with electronic structure modification
of Zn-doped NiO heterostructure for efficient water-splitting activity
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 7
year: '2024'
...
---
_id: '14733'
abstract:
- lang: eng
text: Redox flow batteries (RFBs) rely on the development of cheap, highly soluble,
and high-energy-density electrolytes. Several candidate quinones have already
been investigated in the literature as two-electron anolytes or catholytes, benefiting
from fast kinetics, high tunability, and low cost. Here, an investigation of nitrogen-rich
fused heteroaromatic quinones was carried out to explore avenues for electrolyte
development. These quinones were synthesized and screened by using electrochemical
techniques. The most promising candidate, 4,8-dioxo-4,8-dihydrobenzo[1,2-d:4,5-d′]bis([1,2,3]triazole)-1,5-diide
(−0.68 V(SHE)), was tested in both an asymmetric and symmetric full-cell setup
resulting in capacity fade rates of 0.35% per cycle and 0.0124% per cycle, respectively.
In situ ultraviolet-visible spectroscopy (UV–Vis), nuclear magnetic resonance
(NMR), and electron paramagnetic resonance (EPR) spectroscopies were used to investigate
the electrochemical stability of the charged species during operation. UV–Vis
spectroscopy, supported by density functional theory (DFT) modeling, reaffirmed
that the two-step charging mechanism observed during battery operation consisted
of two, single-electron transfers. The radical concentration during battery operation
and the degree of delocalization of the unpaired electron were quantified with
NMR and EPR spectroscopy.
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Rajesh B
full_name: Jethwa, Rajesh B
id: 4cc538d5-803f-11ed-ab7e-8139573aad8f
last_name: Jethwa
orcid: 0000-0002-0404-4356
- first_name: Dominic
full_name: Hey, Dominic
last_name: Hey
- first_name: Rachel N.
full_name: Kerber, Rachel N.
last_name: Kerber
- first_name: Andrew D.
full_name: Bond, Andrew D.
last_name: Bond
- first_name: Dominic S.
full_name: Wright, Dominic S.
last_name: Wright
- first_name: Clare P.
full_name: Grey, Clare P.
last_name: Grey
citation:
ama: Jethwa RB, Hey D, Kerber RN, Bond AD, Wright DS, Grey CP. Exploring the landscape
of heterocyclic quinones for redox flow batteries. ACS Applied Energy Materials.
2023. doi:10.1021/acsaem.3c02223
apa: Jethwa, R. B., Hey, D., Kerber, R. N., Bond, A. D., Wright, D. S., & Grey,
C. P. (2023). Exploring the landscape of heterocyclic quinones for redox flow
batteries. ACS Applied Energy Materials. American Chemical Society. https://doi.org/10.1021/acsaem.3c02223
chicago: Jethwa, Rajesh B, Dominic Hey, Rachel N. Kerber, Andrew D. Bond, Dominic
S. Wright, and Clare P. Grey. “Exploring the Landscape of Heterocyclic Quinones
for Redox Flow Batteries.” ACS Applied Energy Materials. American Chemical
Society, 2023. https://doi.org/10.1021/acsaem.3c02223.
ieee: R. B. Jethwa, D. Hey, R. N. Kerber, A. D. Bond, D. S. Wright, and C. P. Grey,
“Exploring the landscape of heterocyclic quinones for redox flow batteries,” ACS
Applied Energy Materials. American Chemical Society, 2023.
ista: Jethwa RB, Hey D, Kerber RN, Bond AD, Wright DS, Grey CP. 2023. Exploring
the landscape of heterocyclic quinones for redox flow batteries. ACS Applied Energy
Materials.
mla: Jethwa, Rajesh B., et al. “Exploring the Landscape of Heterocyclic Quinones
for Redox Flow Batteries.” ACS Applied Energy Materials, American Chemical
Society, 2023, doi:10.1021/acsaem.3c02223.
short: R.B. Jethwa, D. Hey, R.N. Kerber, A.D. Bond, D.S. Wright, C.P. Grey, ACS
Applied Energy Materials (2023).
date_created: 2024-01-05T09:20:48Z
date_published: 2023-12-28T00:00:00Z
date_updated: 2024-01-08T09:03:01Z
day: '28'
ddc:
- '540'
department:
- _id: StFr
doi: 10.1021/acsaem.3c02223
ec_funded: 1
has_accepted_license: '1'
keyword:
- Electrical and Electronic Engineering
- Materials Chemistry
- Electrochemistry
- Energy Engineering and Power Technology
- Chemical Engineering (miscellaneous)
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1021/acsaem.3c02223
month: '12'
oa: 1
oa_version: Published Version
project:
- _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c
call_identifier: H2020
grant_number: '101034413'
name: 'IST-BRIDGE: International postdoctoral program'
publication: ACS Applied Energy Materials
publication_identifier:
eissn:
- 2574-0962
publication_status: epub_ahead
publisher: American Chemical Society
quality_controlled: '1'
status: public
title: Exploring the landscape of heterocyclic quinones for redox flow batteries
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '14759'
abstract:
- lang: eng
text: "Proper operation of electro-optic I/Q modulators relies on precise adjustment
and control of the relative phase biases between the modulator’s internal interferometer
arms. We present an all-analog phase bias locking scheme where error signals are
obtained from the beat between the optical carrier and optical tones generated
by an auxiliary 2 MHz \U0001D445\U0001D439 tone to lock the phases of all three
involved interferometers for operation up to 10 GHz. With the developed method,
we demonstrate an I/Q modulator in carrier-suppressed single-sideband mode, where
the suppressed carrier and sideband are locked at optical power levels <−27dB\r\n
relative to the transmitted sideband. We describe a simple analytical model for
calculating the error signals and detail the implementation of the electronic
circuitry for the implementation of the method."
acknowledgement: We thank Jakob Vorlaufer for technical contributions and Vyacheslav
Li and Sofia Agafonova for comments on the manuscript.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Sebastian
full_name: Wald, Sebastian
id: 133F200A-B015-11E9-AD41-0EDAE5697425
last_name: Wald
orcid: 0000-0002-5869-1604
- first_name: Fritz R
full_name: Diorico, Fritz R
id: 2E054C4C-F248-11E8-B48F-1D18A9856A87
last_name: Diorico
orcid: 0000-0002-4947-8924
- first_name: Onur
full_name: Hosten, Onur
id: 4C02D85E-F248-11E8-B48F-1D18A9856A87
last_name: Hosten
orcid: 0000-0002-2031-204X
citation:
ama: Wald S, Diorico FR, Hosten O. Analog stabilization of an electro-optic I/Q
modulator with an auxiliary modulation tone. Applied Optics. 2023;62(1):1-7.
doi:10.1364/ao.474118
apa: Wald, S., Diorico, F. R., & Hosten, O. (2023). Analog stabilization of
an electro-optic I/Q modulator with an auxiliary modulation tone. Applied Optics.
Optica Publishing Group. https://doi.org/10.1364/ao.474118
chicago: Wald, Sebastian, Fritz R Diorico, and Onur Hosten. “Analog Stabilization
of an Electro-Optic I/Q Modulator with an Auxiliary Modulation Tone.” Applied
Optics. Optica Publishing Group, 2023. https://doi.org/10.1364/ao.474118.
ieee: S. Wald, F. R. Diorico, and O. Hosten, “Analog stabilization of an electro-optic
I/Q modulator with an auxiliary modulation tone,” Applied Optics, vol.
62, no. 1. Optica Publishing Group, pp. 1–7, 2023.
ista: Wald S, Diorico FR, Hosten O. 2023. Analog stabilization of an electro-optic
I/Q modulator with an auxiliary modulation tone. Applied Optics. 62(1), 1–7.
mla: Wald, Sebastian, et al. “Analog Stabilization of an Electro-Optic I/Q Modulator
with an Auxiliary Modulation Tone.” Applied Optics, vol. 62, no. 1, Optica
Publishing Group, 2023, pp. 1–7, doi:10.1364/ao.474118.
short: S. Wald, F.R. Diorico, O. Hosten, Applied Optics 62 (2023) 1–7.
date_created: 2024-01-08T13:19:14Z
date_published: 2023-01-01T00:00:00Z
date_updated: 2024-01-09T10:10:34Z
day: '01'
department:
- _id: OnHo
doi: 10.1364/ao.474118
external_id:
arxiv:
- '2208.11591'
intvolume: ' 62'
issue: '1'
keyword:
- Atomic and Molecular Physics
- and Optics
- Engineering (miscellaneous)
- Electrical and Electronic Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.2208.11591
month: '01'
oa: 1
oa_version: Preprint
page: 1-7
publication: Applied Optics
publication_identifier:
eissn:
- 2155-3165
issn:
- 1559-128X
publication_status: published
publisher: Optica Publishing Group
quality_controlled: '1'
scopus_import: '1'
status: public
title: Analog stabilization of an electro-optic I/Q modulator with an auxiliary modulation
tone
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 62
year: '2023'
...
---
_id: '13988'
abstract:
- lang: eng
text: Most permissionless blockchains inherently suffer from throughput limitations.
Layer-2 systems, such as side-chains or Rollups, have been proposed as a possible
strategy to overcome this limitation. Layer-2 systems interact with the main-chain
in two ways. First, users can move funds from/to the main-chain to/from the layer-2.
Second, layer-2 systems periodically synchronize with the main-chain to keep some
form of log of their activity on the main-chain - this log is key for security.
Due to this interaction with the main-chain, which is necessary and recurrent,
layer-2 systems impose some load on the main-chain. The impact of such load on
the main-chain has been, so far, poorly understood. In addition to that, layer-2
approaches typically sacrifice decentralization and security in favor of higher
throughput. This paper presents an experimental study that analyzes the current
state of Ethereum layer-2 projects. Our goal is to assess the load they impose
on Ethereum and to understand their scalability potential in the long-run. Our
analysis shows that the impact of any given layer-2 on the main-chain is the result
of both technical aspects (how state is logged on the main-chain) and user behavior
(how often users decide to transfer funds between the layer-2 and the main-chain).
Based on our observations, we infer that without efficient mechanisms that allow
users to transfer funds in a secure and fast manner directly from one layer-2
project to another, current layer-2 systems will not be able to scale Ethereum
effectively, regardless of their technical solutions. Furthermore, from our results,
we conclude that the layer-2 systems that offer similar security guarantees as
Ethereum have limited scalability potential, while approaches that offer better
performance, sacrifice security and lead to an increase in centralization which
runs against the end-goals of permissionless blockchains.
acknowledgement: This work was supported in part by the Coordenação de Aperfeiçoamento
de Pessoal de Nivel Superior (CAPES)—Brazil (CAPES), in part by the Fundação para
a Ciência e Tecnologia (FCT) under Project UIDB/50021/2020 and Grant 2020.05270.BD,
in part by the Project COSMOS (via the Orçamento de Estado (OE) with ref. PTDC/EEI-COM/29271/2017
and via the ‘‘Programa Operacional Regional de Lisboa na sua componente Fundo Europeu
de Desenvolvimento Regional (FEDER)’’ with ref. Lisboa-01-0145-FEDER-029271), and
in part by the project Angainor with reference LISBOA-01-0145-FEDER-031456 as well
as supported by Meta Platforms for the project key Transparency at Scale.
article_processing_charge: Yes
article_type: original
author:
- first_name: Ray
full_name: Neiheiser, Ray
id: f09651b9-fec0-11ec-b5d8-934aff0e52a4
last_name: Neiheiser
orcid: 0000-0001-7227-8309
- first_name: Gustavo
full_name: Inacio, Gustavo
last_name: Inacio
- first_name: Luciana
full_name: Rech, Luciana
last_name: Rech
- first_name: Carlos
full_name: Montez, Carlos
last_name: Montez
- first_name: Miguel
full_name: Matos, Miguel
last_name: Matos
- first_name: Luis
full_name: Rodrigues, Luis
last_name: Rodrigues
citation:
ama: Neiheiser R, Inacio G, Rech L, Montez C, Matos M, Rodrigues L. Practical limitations
of Ethereum’s layer-2. IEEE Access. 2023;11:8651-8662. doi:10.1109/access.2023.3237897
apa: Neiheiser, R., Inacio, G., Rech, L., Montez, C., Matos, M., & Rodrigues,
L. (2023). Practical limitations of Ethereum’s layer-2. IEEE Access. Institute
of Electrical and Electronics Engineers. https://doi.org/10.1109/access.2023.3237897
chicago: Neiheiser, Ray, Gustavo Inacio, Luciana Rech, Carlos Montez, Miguel Matos,
and Luis Rodrigues. “Practical Limitations of Ethereum’s Layer-2.” IEEE Access.
Institute of Electrical and Electronics Engineers, 2023. https://doi.org/10.1109/access.2023.3237897.
ieee: R. Neiheiser, G. Inacio, L. Rech, C. Montez, M. Matos, and L. Rodrigues, “Practical
limitations of Ethereum’s layer-2,” IEEE Access, vol. 11. Institute of
Electrical and Electronics Engineers, pp. 8651–8662, 2023.
ista: Neiheiser R, Inacio G, Rech L, Montez C, Matos M, Rodrigues L. 2023. Practical
limitations of Ethereum’s layer-2. IEEE Access. 11, 8651–8662.
mla: Neiheiser, Ray, et al. “Practical Limitations of Ethereum’s Layer-2.” IEEE
Access, vol. 11, Institute of Electrical and Electronics Engineers, 2023,
pp. 8651–62, doi:10.1109/access.2023.3237897.
short: R. Neiheiser, G. Inacio, L. Rech, C. Montez, M. Matos, L. Rodrigues, IEEE
Access 11 (2023) 8651–8662.
date_created: 2023-08-09T12:09:57Z
date_published: 2023-08-01T00:00:00Z
date_updated: 2023-12-13T12:14:52Z
day: '01'
ddc:
- '000'
department:
- _id: ElKo
doi: 10.1109/access.2023.3237897
external_id:
isi:
- '000927831000001'
file:
- access_level: open_access
checksum: 4b80b0ff212edf7e5842fbdd53784432
content_type: application/pdf
creator: dernst
date_created: 2023-08-22T06:37:48Z
date_updated: 2023-08-22T06:37:48Z
file_id: '14166'
file_name: 2023_IEEEAccess_Neiheiser.pdf
file_size: 1289285
relation: main_file
success: 1
file_date_updated: 2023-08-22T06:37:48Z
has_accepted_license: '1'
intvolume: ' 11'
isi: 1
keyword:
- General Engineering
- General Materials Science
- General Computer Science
- Electrical and Electronic Engineering
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
page: 8651-8662
publication: IEEE Access
publication_identifier:
issn:
- 2169-3536
publication_status: published
publisher: Institute of Electrical and Electronics Engineers
quality_controlled: '1'
scopus_import: '1'
status: public
title: Practical limitations of Ethereum’s layer-2
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2023'
...
---
_id: '11343'
abstract:
- lang: eng
text: Multistable systems are characterized by exhibiting domain coexistence, where
each domain accounts for the different equilibrium states. In case these systems
are described by vectorial fields, domains can be connected through topological
defects. Vortices are one of the most frequent and studied topological defect
points. Optical vortices are equally relevant for their fundamental features as
beams with topological features and their applications in image processing, telecommunications,
optical tweezers, and quantum information. A natural source of optical vortices
is the interaction of light beams with matter vortices in liquid crystal cells.
The rhythms that govern the emergence of matter vortices due to fluctuations are
not established. Here, we investigate the nucleation mechanisms of the matter
vortices in liquid crystal cells and establish statistical laws that govern them.
Based on a stochastic amplitude equation, the law for the number of nucleated
vortices as a function of anisotropy, voltage, and noise level intensity is set.
Experimental observations in a nematic liquid crystal cell with homeotropic anchoring
and a negative anisotropic dielectric constant under the influence of a transversal
electric field show a qualitative agreement with the theoretical findings.
acknowledgement: "The authors thank Enrique Calisto,Michal Kowalczyk, and Michel Ferre
for fructified discussions. This work was funded by ANID—Millennium Science Initiative
Program—ICN17_012. MGC is thankful for financial support from the Fondecyt 1210353
project.\r\nOpen access funding provided by Institute of Science and Technology
(IST Austria)."
article_processing_charge: Yes (via OA deal)
article_type: original
author:
- first_name: Esteban
full_name: Aguilera, Esteban
last_name: Aguilera
- first_name: Marcel G.
full_name: Clerc, Marcel G.
last_name: Clerc
- first_name: Valeska
full_name: Zambra, Valeska
id: 467ed36b-dc96-11ea-b7c8-b043a380b282
last_name: Zambra
citation:
ama: Aguilera E, Clerc MG, Zambra V. Vortices nucleation by inherent fluctuations
in nematic liquid crystal cells. Nonlinear Dynamics. 2022;108:3209-3218.
doi:10.1007/s11071-022-07396-5
apa: Aguilera, E., Clerc, M. G., & Zambra, V. (2022). Vortices nucleation by
inherent fluctuations in nematic liquid crystal cells. Nonlinear Dynamics.
Springer Nature. https://doi.org/10.1007/s11071-022-07396-5
chicago: Aguilera, Esteban, Marcel G. Clerc, and Valeska Zambra. “Vortices Nucleation
by Inherent Fluctuations in Nematic Liquid Crystal Cells.” Nonlinear Dynamics.
Springer Nature, 2022. https://doi.org/10.1007/s11071-022-07396-5.
ieee: E. Aguilera, M. G. Clerc, and V. Zambra, “Vortices nucleation by inherent
fluctuations in nematic liquid crystal cells,” Nonlinear Dynamics, vol.
108. Springer Nature, pp. 3209–3218, 2022.
ista: Aguilera E, Clerc MG, Zambra V. 2022. Vortices nucleation by inherent fluctuations
in nematic liquid crystal cells. Nonlinear Dynamics. 108, 3209–3218.
mla: Aguilera, Esteban, et al. “Vortices Nucleation by Inherent Fluctuations in
Nematic Liquid Crystal Cells.” Nonlinear Dynamics, vol. 108, Springer Nature,
2022, pp. 3209–18, doi:10.1007/s11071-022-07396-5.
short: E. Aguilera, M.G. Clerc, V. Zambra, Nonlinear Dynamics 108 (2022) 3209–3218.
date_created: 2022-05-02T07:01:59Z
date_published: 2022-06-01T00:00:00Z
date_updated: 2023-08-03T06:46:54Z
day: '01'
ddc:
- '530'
department:
- _id: KiMo
doi: 10.1007/s11071-022-07396-5
external_id:
isi:
- '000784871800001'
file:
- access_level: open_access
checksum: 7d80cdece4e1b1c2106e6772a9622f60
content_type: application/pdf
creator: dernst
date_created: 2022-08-05T06:13:19Z
date_updated: 2022-08-05T06:13:19Z
file_id: '11728'
file_name: 2022_NonlinearDyn_Aguilera.pdf
file_size: 1416049
relation: main_file
success: 1
file_date_updated: 2022-08-05T06:13:19Z
has_accepted_license: '1'
intvolume: ' 108'
isi: 1
keyword:
- Electrical and Electronic Engineering
- Applied Mathematics
- Mechanical Engineering
- Ocean Engineering
- Aerospace Engineering
- Control and Systems Engineering
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 3209-3218
publication: Nonlinear Dynamics
publication_identifier:
eissn:
- 1573-269X
issn:
- 0924-090X
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Vortices nucleation by inherent fluctuations in nematic liquid crystal cells
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 108
year: '2022'
...
---
_id: '13352'
abstract:
- lang: eng
text: Optoelectronic effects differentiating absorption of right and left circularly
polarized photons in thin films of chiral materials are typically prohibitively
small for their direct photocurrent observation. Chiral metasurfaces increase
the electronic sensitivity to circular polarization, but their out-of-plane architecture
entails manufacturing and performance trade-offs. Here, we show that nanoporous
thin films of chiral nanoparticles enable high sensitivity to circular polarization
due to light-induced polarization-dependent ion accumulation at nanoparticle interfaces.
Self-assembled multilayers of gold nanoparticles modified with L-phenylalanine
generate a photocurrent under right-handed circularly polarized light as high
as 2.41 times higher than under left-handed circularly polarized light. The strong
plasmonic coupling between the multiple nanoparticles producing planar chiroplasmonic
modes facilitates the ejection of electrons, whose entrapment at the membrane–electrolyte
interface is promoted by a thick layer of enantiopure phenylalanine. Demonstrated
detection of light ellipticity with equal sensitivity at all incident angles mimics
phenomenological aspects of polarization vision in marine animals. The simplicity
of self-assembly and sensitivity of polarization detection found in optoionic
membranes opens the door to a family of miniaturized fluidic devices for chiral
photonics.
article_processing_charge: No
article_type: original
author:
- first_name: Jiarong
full_name: Cai, Jiarong
last_name: Cai
- first_name: Wei
full_name: Zhang, Wei
last_name: Zhang
- first_name: Liguang
full_name: Xu, Liguang
last_name: Xu
- first_name: Changlong
full_name: Hao, Changlong
last_name: Hao
- first_name: Wei
full_name: Ma, Wei
last_name: Ma
- first_name: Maozhong
full_name: Sun, Maozhong
last_name: Sun
- first_name: Xiaoling
full_name: Wu, Xiaoling
last_name: Wu
- first_name: Xian
full_name: Qin, Xian
last_name: Qin
- first_name: Felippe Mariano
full_name: Colombari, Felippe Mariano
last_name: Colombari
- first_name: André Farias
full_name: de Moura, André Farias
last_name: de Moura
- first_name: Jiahui
full_name: Xu, Jiahui
last_name: Xu
- first_name: Mariana Cristina
full_name: Silva, Mariana Cristina
last_name: Silva
- first_name: Evaldo Batista
full_name: Carneiro-Neto, Evaldo Batista
last_name: Carneiro-Neto
- first_name: Weverson Rodrigues
full_name: Gomes, Weverson Rodrigues
last_name: Gomes
- first_name: Renaud A. L.
full_name: Vallée, Renaud A. L.
last_name: Vallée
- first_name: Ernesto Chaves
full_name: Pereira, Ernesto Chaves
last_name: Pereira
- first_name: Xiaogang
full_name: Liu, Xiaogang
last_name: Liu
- first_name: Chuanlai
full_name: Xu, Chuanlai
last_name: Xu
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
- first_name: Nicholas A.
full_name: Kotov, Nicholas A.
last_name: Kotov
- first_name: Hua
full_name: Kuang, Hua
last_name: Kuang
citation:
ama: Cai J, Zhang W, Xu L, et al. Polarization-sensitive optoionic membranes from
chiral plasmonic nanoparticles. Nature Nanotechnology. 2022;17(4):408-416.
doi:10.1038/s41565-022-01079-3
apa: Cai, J., Zhang, W., Xu, L., Hao, C., Ma, W., Sun, M., … Kuang, H. (2022). Polarization-sensitive
optoionic membranes from chiral plasmonic nanoparticles. Nature Nanotechnology.
Springer Nature. https://doi.org/10.1038/s41565-022-01079-3
chicago: Cai, Jiarong, Wei Zhang, Liguang Xu, Changlong Hao, Wei Ma, Maozhong Sun,
Xiaoling Wu, et al. “Polarization-Sensitive Optoionic Membranes from Chiral Plasmonic
Nanoparticles.” Nature Nanotechnology. Springer Nature, 2022. https://doi.org/10.1038/s41565-022-01079-3.
ieee: J. Cai et al., “Polarization-sensitive optoionic membranes from chiral
plasmonic nanoparticles,” Nature Nanotechnology, vol. 17, no. 4. Springer
Nature, pp. 408–416, 2022.
ista: Cai J, Zhang W, Xu L, Hao C, Ma W, Sun M, Wu X, Qin X, Colombari FM, de Moura
AF, Xu J, Silva MC, Carneiro-Neto EB, Gomes WR, Vallée RAL, Pereira EC, Liu X,
Xu C, Klajn R, Kotov NA, Kuang H. 2022. Polarization-sensitive optoionic membranes
from chiral plasmonic nanoparticles. Nature Nanotechnology. 17(4), 408–416.
mla: Cai, Jiarong, et al. “Polarization-Sensitive Optoionic Membranes from Chiral
Plasmonic Nanoparticles.” Nature Nanotechnology, vol. 17, no. 4, Springer
Nature, 2022, pp. 408–16, doi:10.1038/s41565-022-01079-3.
short: J. Cai, W. Zhang, L. Xu, C. Hao, W. Ma, M. Sun, X. Wu, X. Qin, F.M. Colombari,
A.F. de Moura, J. Xu, M.C. Silva, E.B. Carneiro-Neto, W.R. Gomes, R.A.L. Vallée,
E.C. Pereira, X. Liu, C. Xu, R. Klajn, N.A. Kotov, H. Kuang, Nature Nanotechnology
17 (2022) 408–416.
date_created: 2023-08-01T09:32:40Z
date_published: 2022-03-14T00:00:00Z
date_updated: 2023-08-02T09:44:31Z
day: '14'
doi: 10.1038/s41565-022-01079-3
extern: '1'
external_id:
pmid:
- '35288671'
intvolume: ' 17'
issue: '4'
keyword:
- Electrical and Electronic Engineering
- Condensed Matter Physics
- General Materials Science
- Biomedical Engineering
- Atomic and Molecular Physics
- and Optics
- Bioengineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://hal.science/hal-03623036/
month: '03'
oa: 1
oa_version: Published Version
page: 408-416
pmid: 1
publication: Nature Nanotechnology
publication_identifier:
eissn:
- 1748-3395
issn:
- 1748-3387
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Polarization-sensitive optoionic membranes from chiral plasmonic nanoparticles
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 17
year: '2022'
...
---
_id: '13353'
abstract:
- lang: eng
text: We show that the optical properties of indigo carmine can be modulated by
encapsulation within a coordination cage. Depending on the host/guest molar ratio,
the cage can predominantly encapsulate either one or two dye molecules. The 1 : 1
complex is fluorescent, unique for an indigo dye in an aqueous solution. We have
also found that binding two dye molecules stabilizes a previously unknown conformation
of the cage.
article_processing_charge: No
article_type: original
author:
- first_name: Oksana
full_name: Yanshyna, Oksana
last_name: Yanshyna
- first_name: Liat
full_name: Avram, Liat
last_name: Avram
- first_name: Linda J. W.
full_name: Shimon, Linda J. W.
last_name: Shimon
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Yanshyna O, Avram L, Shimon LJW, Klajn R. Coexistence of 1:1 and 2:1 inclusion
complexes of indigo carmine. Chemical Communications. 2022;58(21):3461-3464.
doi:10.1039/d1cc07081a
apa: Yanshyna, O., Avram, L., Shimon, L. J. W., & Klajn, R. (2022). Coexistence
of 1:1 and 2:1 inclusion complexes of indigo carmine. Chemical Communications.
Royal Society of Chemistry. https://doi.org/10.1039/d1cc07081a
chicago: Yanshyna, Oksana, Liat Avram, Linda J. W. Shimon, and Rafal Klajn. “Coexistence
of 1:1 and 2:1 Inclusion Complexes of Indigo Carmine.” Chemical Communications.
Royal Society of Chemistry, 2022. https://doi.org/10.1039/d1cc07081a.
ieee: O. Yanshyna, L. Avram, L. J. W. Shimon, and R. Klajn, “Coexistence of 1:1
and 2:1 inclusion complexes of indigo carmine,” Chemical Communications,
vol. 58, no. 21. Royal Society of Chemistry, pp. 3461–3464, 2022.
ista: Yanshyna O, Avram L, Shimon LJW, Klajn R. 2022. Coexistence of 1:1 and 2:1
inclusion complexes of indigo carmine. Chemical Communications. 58(21), 3461–3464.
mla: Yanshyna, Oksana, et al. “Coexistence of 1:1 and 2:1 Inclusion Complexes of
Indigo Carmine.” Chemical Communications, vol. 58, no. 21, Royal Society
of Chemistry, 2022, pp. 3461–64, doi:10.1039/d1cc07081a.
short: O. Yanshyna, L. Avram, L.J.W. Shimon, R. Klajn, Chemical Communications 58
(2022) 3461–3464.
date_created: 2023-08-01T09:32:55Z
date_published: 2022-01-22T00:00:00Z
date_updated: 2023-08-02T09:46:51Z
day: '22'
doi: 10.1039/d1cc07081a
extern: '1'
external_id:
pmid:
- '35064258'
intvolume: ' 58'
issue: '21'
keyword:
- Materials Chemistry
- Metals and Alloys
- Surfaces
- Coatings and Films
- General Chemistry
- Ceramics and Composites
- Electronic
- Optical and Magnetic Materials
- Catalysis
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1039/D1CC07081A
month: '01'
oa: 1
oa_version: Published Version
page: 3461-3464
pmid: 1
publication: Chemical Communications
publication_identifier:
eissn:
- 1364-548X
issn:
- 1359-7345
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Coexistence of 1:1 and 2:1 inclusion complexes of indigo carmine
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 58
year: '2022'
...
---
_id: '13991'
abstract:
- lang: eng
text: The prediction and realization of topological insulators have sparked great
interest in experimental approaches to the classification of materials1,2,3. The
phase transition between non-trivial and trivial topological states is important,
not only for basic materials science but also for next-generation technology,
such as dissipation-free electronics4. It is therefore crucial to develop advanced
probes that are suitable for a wide range of samples and environments. Here we
demonstrate that circularly polarized laser-field-driven high-harmonic generation
is distinctly sensitive to the non-trivial and trivial topological phases in the
prototypical three-dimensional topological insulator bismuth selenide5. The phase
transition is chemically initiated by reducing the spin–orbit interaction strength
through the substitution of bismuth with indium atoms6,7. We find strikingly different
high-harmonic responses of trivial and non-trivial topological surface states
that manifest themselves as a conversion efficiency and elliptical dichroism that
depend both on the driving laser ellipticity and the crystal orientation. The
origins of the anomalous high-harmonic response are corroborated by calculations
using the semiconductor optical Bloch equations with pairs of surface and bulk
bands. As a purely optical approach, this method offers sensitivity to the electronic
structure of the material, including its nonlinear response, and is compatible
with a wide range of samples and sample environments.
article_processing_charge: No
article_type: original
author:
- first_name: Christian
full_name: Heide, Christian
last_name: Heide
- first_name: Yuki
full_name: Kobayashi, Yuki
last_name: Kobayashi
- first_name: Denitsa Rangelova
full_name: Baykusheva, Denitsa Rangelova
id: 71b4d059-2a03-11ee-914d-dfa3beed6530
last_name: Baykusheva
- first_name: Deepti
full_name: Jain, Deepti
last_name: Jain
- first_name: Jonathan A.
full_name: Sobota, Jonathan A.
last_name: Sobota
- first_name: Makoto
full_name: Hashimoto, Makoto
last_name: Hashimoto
- first_name: Patrick S.
full_name: Kirchmann, Patrick S.
last_name: Kirchmann
- first_name: Seongshik
full_name: Oh, Seongshik
last_name: Oh
- first_name: Tony F.
full_name: Heinz, Tony F.
last_name: Heinz
- first_name: David A.
full_name: Reis, David A.
last_name: Reis
- first_name: Shambhu
full_name: Ghimire, Shambhu
last_name: Ghimire
citation:
ama: Heide C, Kobayashi Y, Baykusheva DR, et al. Probing topological phase transitions
using high-harmonic generation. Nature Photonics. 2022;16(9):620-624. doi:10.1038/s41566-022-01050-7
apa: Heide, C., Kobayashi, Y., Baykusheva, D. R., Jain, D., Sobota, J. A., Hashimoto,
M., … Ghimire, S. (2022). Probing topological phase transitions using high-harmonic
generation. Nature Photonics. Springer Nature. https://doi.org/10.1038/s41566-022-01050-7
chicago: Heide, Christian, Yuki Kobayashi, Denitsa Rangelova Baykusheva, Deepti
Jain, Jonathan A. Sobota, Makoto Hashimoto, Patrick S. Kirchmann, et al. “Probing
Topological Phase Transitions Using High-Harmonic Generation.” Nature Photonics.
Springer Nature, 2022. https://doi.org/10.1038/s41566-022-01050-7.
ieee: C. Heide et al., “Probing topological phase transitions using high-harmonic
generation,” Nature Photonics, vol. 16, no. 9. Springer Nature, pp. 620–624,
2022.
ista: Heide C, Kobayashi Y, Baykusheva DR, Jain D, Sobota JA, Hashimoto M, Kirchmann
PS, Oh S, Heinz TF, Reis DA, Ghimire S. 2022. Probing topological phase transitions
using high-harmonic generation. Nature Photonics. 16(9), 620–624.
mla: Heide, Christian, et al. “Probing Topological Phase Transitions Using High-Harmonic
Generation.” Nature Photonics, vol. 16, no. 9, Springer Nature, 2022, pp.
620–24, doi:10.1038/s41566-022-01050-7.
short: C. Heide, Y. Kobayashi, D.R. Baykusheva, D. Jain, J.A. Sobota, M. Hashimoto,
P.S. Kirchmann, S. Oh, T.F. Heinz, D.A. Reis, S. Ghimire, Nature Photonics 16
(2022) 620–624.
date_created: 2023-08-09T13:07:51Z
date_published: 2022-09-01T00:00:00Z
date_updated: 2023-08-22T07:20:09Z
day: '01'
doi: 10.1038/s41566-022-01050-7
extern: '1'
intvolume: ' 16'
issue: '9'
keyword:
- Atomic and Molecular Physics
- and Optics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
month: '09'
oa_version: None
page: 620-624
publication: Nature Photonics
publication_identifier:
eissn:
- 1749-4893
issn:
- 1749-4885
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Probing topological phase transitions using high-harmonic generation
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 16
year: '2022'
...
---
_id: '12213'
abstract:
- lang: eng
text: 'Motivated by properties-controlling potential of the strain, we investigate
strain dependence of structure, electronic, and magnetic properties of Sr2IrO4
using complementary theoretical tools: ab-initio calculations, analytical approaches
(rigid octahedra picture, Slater-Koster integrals), and extended t−J model. We
find that strain affects both Ir-Ir distance and Ir-O-Ir angle, and the rigid
octahedra picture is not relevant. Second, we find fundamentally different behavior
for compressive and tensile strain. One remarkable feature is the formation of
two subsets of bond- and orbital-dependent carriers, a compass-like model, under
compression. This originates from the strain-induced renormalization of the Ir-O-Ir
superexchange and O on-site energy. We also show that under compressive (tensile)
strain, Fermi surface becomes highly dispersive (relatively flat). Already at
a tensile strain of 1.5%, we observe spectral weight redistribution, with the
low-energy band acquiring almost purely singlet character. These results can be
directly compared with future experiments.'
acknowledgement: E.M.P. thanks Eugenio Paris, Thorsten Schmitt, Krzysztof Wohlfeld,
and other coauthors for an inspiring previous collaboration23, and is grateful to
Gang Cao, Ambrose Seo, and Jungho Kim for insightful discussions. R.R. acknowledges
helpful discussion with Sanjeev Kumar and Manuel Richter. This project has received
funding from the European Union’s Horizon 2020 research and innovation program under
the Marie Sklodowska-Curie grant agreement No 754411. C.C.C. acknowledges support
from the U.S. National Science Foundation Award No. DMR-2142801.
article_number: '90'
article_processing_charge: No
article_type: original
author:
- first_name: Ekaterina
full_name: Paerschke, Ekaterina
id: 8275014E-6063-11E9-9B7F-6338E6697425
last_name: Paerschke
orcid: 0000-0003-0853-8182
- first_name: Wei-Chih
full_name: Chen, Wei-Chih
last_name: Chen
- first_name: Rajyavardhan
full_name: Ray, Rajyavardhan
last_name: Ray
- first_name: Cheng-Chien
full_name: Chen, Cheng-Chien
last_name: Chen
citation:
ama: Paerschke E, Chen W-C, Ray R, Chen C-C. Evolution of electronic and magnetic
properties of Sr₂IrO₄ under strain. npj Quantum Materials. 2022;7. doi:10.1038/s41535-022-00496-w
apa: Paerschke, E., Chen, W.-C., Ray, R., & Chen, C.-C. (2022). Evolution of
electronic and magnetic properties of Sr₂IrO₄ under strain. Npj Quantum Materials.
Springer Nature. https://doi.org/10.1038/s41535-022-00496-w
chicago: Paerschke, Ekaterina, Wei-Chih Chen, Rajyavardhan Ray, and Cheng-Chien
Chen. “Evolution of Electronic and Magnetic Properties of Sr₂IrO₄ under Strain.”
Npj Quantum Materials. Springer Nature, 2022. https://doi.org/10.1038/s41535-022-00496-w.
ieee: E. Paerschke, W.-C. Chen, R. Ray, and C.-C. Chen, “Evolution of electronic
and magnetic properties of Sr₂IrO₄ under strain,” npj Quantum Materials,
vol. 7. Springer Nature, 2022.
ista: Paerschke E, Chen W-C, Ray R, Chen C-C. 2022. Evolution of electronic and
magnetic properties of Sr₂IrO₄ under strain. npj Quantum Materials. 7, 90.
mla: Paerschke, Ekaterina, et al. “Evolution of Electronic and Magnetic Properties
of Sr₂IrO₄ under Strain.” Npj Quantum Materials, vol. 7, 90, Springer Nature,
2022, doi:10.1038/s41535-022-00496-w.
short: E. Paerschke, W.-C. Chen, R. Ray, C.-C. Chen, Npj Quantum Materials 7 (2022).
date_created: 2023-01-16T09:46:01Z
date_published: 2022-09-10T00:00:00Z
date_updated: 2023-08-04T09:23:43Z
day: '10'
ddc:
- '530'
department:
- _id: MiLe
doi: 10.1038/s41535-022-00496-w
ec_funded: 1
external_id:
isi:
- '000852381200003'
file:
- access_level: open_access
checksum: d93b477b5b95c0d1b8f9fef90a81f565
content_type: application/pdf
creator: dernst
date_created: 2023-01-27T07:59:27Z
date_updated: 2023-01-27T07:59:27Z
file_id: '12414'
file_name: 2022_NPJ_Paerschke.pdf
file_size: 1852598
relation: main_file
success: 1
file_date_updated: 2023-01-27T07:59:27Z
has_accepted_license: '1'
intvolume: ' 7'
isi: 1
keyword:
- Condensed Matter Physics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: npj Quantum Materials
publication_identifier:
eissn:
- 2397-4648
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s41535-022-00510-1
scopus_import: '1'
status: public
title: Evolution of electronic and magnetic properties of Sr₂IrO₄ under strain
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 7
year: '2022'
...
---
_id: '12227'
abstract:
- lang: eng
text: Polydicyclopentadiene (pDCPD), a thermoset with excellent mechanical properties,
has enormous potential as a lightweight, tough, and stable matrix material owing
to its highly cross-linked macromolecular network. This work describes generating
pDCPD-based foams and hierarchically porous carbons derived therefrom by combining
ring-opening metathesis polymerization (ROMP) of DCPD, high internal phase emulsions
(HIPEs) as structural templates, and subsequent carbonization. The structure and
function of the carbon foams were characterized and discussed in detail using
scanning electron, transmission electron, or atomic force microscopy (SEM, TEM,
AFM), electron energy-loss spectroscopy (TEM-EELS), N2 sorption, and analyses
of electrical conductivity as well as mechanical properties. The resulting materials
exhibited uniform, shape-retaining shrinkage of only ∼1/3 after carbonization.
No structural failure was observed even when the pDCPD precursor foams were heated
to 1400 °C. Instead, the high porosity, void size, and 3D interconnectivity were
fully preserved, and the void diameters could be adjusted between 87 and 2.5 μm.
Moreover, foams have a carbon content >97%, an electronic conductivity of up to
2800 S·m–1, a Young’s modulus of up to 2.1 GPa, and a specific surface area of
up to 1200 m2·g–1. Surprisingly, the pDCPD foams were carbonized into shapes other
than monoliths, such as 10’s of micron thick membranes or foamy coatings adhered
to a metal foil or grid substrate. The latter coatings even adhere upon bending.
Finally, as a use case, carbonized foams were applied as porous cathodes for Li–O2
batteries where the foams show a favorable combination of porosity, active surface
area, and pore size for outstanding capacity.
acknowledgement: S.K. acknowledges the financial support from the Slovenian Research
Agency (grants P1-0021, P2-0150). Support by Graz University of Technology (LP-03
– Porous Materials@Work) and from VARTA Innovation GmbH is kindly acknowledged.
We thank Umicore for providing the initiator and Matjaž Mazaj (National Institute
of Chemistry, Ljubljana) and Karel Jerabek (Czech Academy of Sciences) for measurements
and fruitful discussions. S.A.F. is indebted to the Austrian Federal Ministry of
Science, Research and Economy; the Austrian Research Promotion Agency (Grant No.
845364); and ISTA for support.
article_processing_charge: No
article_type: original
author:
- first_name: Sebastijan
full_name: Kovačič, Sebastijan
last_name: Kovačič
- first_name: Bettina
full_name: Schafzahl, Bettina
last_name: Schafzahl
- first_name: Nadejda B.
full_name: Matsko, Nadejda B.
last_name: Matsko
- first_name: Katharina
full_name: Gruber, Katharina
last_name: Gruber
- first_name: Martin
full_name: Schmuck, Martin
last_name: Schmuck
- first_name: Stefan
full_name: Koller, Stefan
last_name: Koller
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Christian
full_name: Slugovc, Christian
last_name: Slugovc
citation:
ama: 'Kovačič S, Schafzahl B, Matsko NB, et al. Carbon foams via ring-opening metathesis
polymerization of emulsion templates: A facile method to make carbon current collectors
for battery applications. ACS Applied Energy Materials. 2022;5(11):14381-14390.
doi:10.1021/acsaem.2c02787'
apa: 'Kovačič, S., Schafzahl, B., Matsko, N. B., Gruber, K., Schmuck, M., Koller,
S., … Slugovc, C. (2022). Carbon foams via ring-opening metathesis polymerization
of emulsion templates: A facile method to make carbon current collectors for battery
applications. ACS Applied Energy Materials. American Chemical Society.
https://doi.org/10.1021/acsaem.2c02787'
chicago: 'Kovačič, Sebastijan, Bettina Schafzahl, Nadejda B. Matsko, Katharina Gruber,
Martin Schmuck, Stefan Koller, Stefan Alexander Freunberger, and Christian Slugovc.
“Carbon Foams via Ring-Opening Metathesis Polymerization of Emulsion Templates:
A Facile Method to Make Carbon Current Collectors for Battery Applications.” ACS
Applied Energy Materials. American Chemical Society, 2022. https://doi.org/10.1021/acsaem.2c02787.'
ieee: 'S. Kovačič et al., “Carbon foams via ring-opening metathesis polymerization
of emulsion templates: A facile method to make carbon current collectors for battery
applications,” ACS Applied Energy Materials, vol. 5, no. 11. American Chemical
Society, pp. 14381–14390, 2022.'
ista: 'Kovačič S, Schafzahl B, Matsko NB, Gruber K, Schmuck M, Koller S, Freunberger
SA, Slugovc C. 2022. Carbon foams via ring-opening metathesis polymerization of
emulsion templates: A facile method to make carbon current collectors for battery
applications. ACS Applied Energy Materials. 5(11), 14381–14390.'
mla: 'Kovačič, Sebastijan, et al. “Carbon Foams via Ring-Opening Metathesis Polymerization
of Emulsion Templates: A Facile Method to Make Carbon Current Collectors for Battery
Applications.” ACS Applied Energy Materials, vol. 5, no. 11, American Chemical
Society, 2022, pp. 14381–90, doi:10.1021/acsaem.2c02787.'
short: S. Kovačič, B. Schafzahl, N.B. Matsko, K. Gruber, M. Schmuck, S. Koller,
S.A. Freunberger, C. Slugovc, ACS Applied Energy Materials 5 (2022) 14381–14390.
date_created: 2023-01-16T09:48:53Z
date_published: 2022-10-16T00:00:00Z
date_updated: 2023-08-04T09:27:32Z
day: '16'
ddc:
- '540'
department:
- _id: StFr
doi: 10.1021/acsaem.2c02787
external_id:
isi:
- '000875635900001'
file:
- access_level: open_access
checksum: 572d15c250ab83d44f4e2c3aeb5f7388
content_type: application/pdf
creator: dernst
date_created: 2023-01-27T09:09:15Z
date_updated: 2023-01-27T09:09:15Z
file_id: '12420'
file_name: 2022_AppliedEnergyMaterials_Kovacic.pdf
file_size: 13105589
relation: main_file
success: 1
file_date_updated: 2023-01-27T09:09:15Z
has_accepted_license: '1'
intvolume: ' 5'
isi: 1
issue: '11'
keyword:
- Electrical and Electronic Engineering
- Materials Chemistry
- Electrochemistry
- Energy Engineering and Power Technology
- Chemical Engineering (miscellaneous)
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
page: 14381-14390
publication: ACS Applied Energy Materials
publication_identifier:
issn:
- 2574-0962
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Carbon foams via ring-opening metathesis polymerization of emulsion templates:
A facile method to make carbon current collectors for battery applications'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 5
year: '2022'
...
---
_id: '14117'
abstract:
- lang: eng
text: 'The two fields of machine learning and graphical causality arose and are
developed separately. However, there is, now, cross-pollination and increasing
interest in both fields to benefit from the advances of the other. In this article,
we review fundamental concepts of causal inference and relate them to crucial
open problems of machine learning, including transfer and generalization, thereby
assaying how causality can contribute to modern machine learning research. This
also applies in the opposite direction: we note that most work in causality starts
from the premise that the causal variables are given. A central problem for AI
and causality is, thus, causal representation learning, that is, the discovery
of high-level causal variables from low-level observations. Finally, we delineate
some implications of causality for machine learning and propose key research areas
at the intersection of both communities.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Bernhard
full_name: Scholkopf, Bernhard
last_name: Scholkopf
- first_name: Francesco
full_name: Locatello, Francesco
id: 26cfd52f-2483-11ee-8040-88983bcc06d4
last_name: Locatello
orcid: 0000-0002-4850-0683
- first_name: Stefan
full_name: Bauer, Stefan
last_name: Bauer
- first_name: Nan Rosemary
full_name: Ke, Nan Rosemary
last_name: Ke
- first_name: Nal
full_name: Kalchbrenner, Nal
last_name: Kalchbrenner
- first_name: Anirudh
full_name: Goyal, Anirudh
last_name: Goyal
- first_name: Yoshua
full_name: Bengio, Yoshua
last_name: Bengio
citation:
ama: Scholkopf B, Locatello F, Bauer S, et al. Toward causal representation learning.
Proceedings of the IEEE. 2021;109(5):612-634. doi:10.1109/jproc.2021.3058954
apa: Scholkopf, B., Locatello, F., Bauer, S., Ke, N. R., Kalchbrenner, N., Goyal,
A., & Bengio, Y. (2021). Toward causal representation learning. Proceedings
of the IEEE. Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/jproc.2021.3058954
chicago: Scholkopf, Bernhard, Francesco Locatello, Stefan Bauer, Nan Rosemary Ke,
Nal Kalchbrenner, Anirudh Goyal, and Yoshua Bengio. “Toward Causal Representation
Learning.” Proceedings of the IEEE. Institute of Electrical and Electronics
Engineers, 2021. https://doi.org/10.1109/jproc.2021.3058954.
ieee: B. Scholkopf et al., “Toward causal representation learning,” Proceedings
of the IEEE, vol. 109, no. 5. Institute of Electrical and Electronics Engineers,
pp. 612–634, 2021.
ista: Scholkopf B, Locatello F, Bauer S, Ke NR, Kalchbrenner N, Goyal A, Bengio
Y. 2021. Toward causal representation learning. Proceedings of the IEEE. 109(5),
612–634.
mla: Scholkopf, Bernhard, et al. “Toward Causal Representation Learning.” Proceedings
of the IEEE, vol. 109, no. 5, Institute of Electrical and Electronics Engineers,
2021, pp. 612–34, doi:10.1109/jproc.2021.3058954.
short: B. Scholkopf, F. Locatello, S. Bauer, N.R. Ke, N. Kalchbrenner, A. Goyal,
Y. Bengio, Proceedings of the IEEE 109 (2021) 612–634.
date_created: 2023-08-21T12:19:30Z
date_published: 2021-05-01T00:00:00Z
date_updated: 2023-09-11T11:43:35Z
day: '01'
department:
- _id: FrLo
doi: 10.1109/jproc.2021.3058954
extern: '1'
external_id:
arxiv:
- '2102.11107'
intvolume: ' 109'
issue: '5'
keyword:
- Electrical and Electronic Engineering
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1109/JPROC.2021.3058954
month: '05'
oa: 1
oa_version: Published Version
page: 612-634
publication: Proceedings of the IEEE
publication_identifier:
eissn:
- 1558-2256
issn:
- 0018-9219
publication_status: published
publisher: Institute of Electrical and Electronics Engineers
quality_controlled: '1'
scopus_import: '1'
status: public
title: Toward causal representation learning
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 109
year: '2021'
...
---
_id: '9447'
abstract:
- lang: eng
text: 'Lithium bis(trifluoromethylsulfonyl)imide (LiTFSI) based water-in-salt electrolytes
(WiSEs) has recently emerged as a new promising class of electrolytes, primarily
owing to their wide electrochemical stability windows (~3–4 V), that by far exceed
the thermodynamic stability window of water (1.23 V). Upon increasing the salt
concentration towards superconcentration the onset of the oxygen evolution reaction
(OER) shifts more significantly than the hydrogen evolution reaction (HER) does.
The OER shift has been explained by the accumulation of hydrophobic anions blocking
water access to the electrode surface, hence by double layer theory. Here we demonstrate
that the processes during oxidation are much more complex, involving OER, carbon
and salt decomposition by OER intermediates, and salt precipitation upon local
oversaturation. The positive shift in the onset potential of oxidation currents
was elucidated by combining several advanced analysis techniques: rotating ring-disk
electrode voltammetry, online electrochemical mass spectrometry, and X-ray photoelectron
spectroscopy, using both dilute and superconcentrated electrolytes. The results
demonstrate the importance of reactive OER intermediates and surface films for
electrolyte and electrode stability and motivate further studies of the nature
of the electrode.'
article_number: '050550'
article_processing_charge: No
author:
- first_name: Marion
full_name: Maffre, Marion
last_name: Maffre
- first_name: Roza
full_name: Bouchal, Roza
last_name: Bouchal
- first_name: Stefan Alexander
full_name: Freunberger, Stefan Alexander
id: A8CA28E6-CE23-11E9-AD2D-EC27E6697425
last_name: Freunberger
orcid: 0000-0003-2902-5319
- first_name: Niklas
full_name: Lindahl, Niklas
last_name: Lindahl
- first_name: Patrik
full_name: Johansson, Patrik
last_name: Johansson
- first_name: Frédéric
full_name: Favier, Frédéric
last_name: Favier
- first_name: Olivier
full_name: Fontaine, Olivier
last_name: Fontaine
- first_name: Daniel
full_name: Bélanger, Daniel
last_name: Bélanger
citation:
ama: Maffre M, Bouchal R, Freunberger SA, et al. Investigation of electrochemical
and chemical processes occurring at positive potentials in “Water-in-Salt” electrolytes.
Journal of The Electrochemical Society. 2021;168(5). doi:10.1149/1945-7111/ac0300
apa: Maffre, M., Bouchal, R., Freunberger, S. A., Lindahl, N., Johansson, P., Favier,
F., … Bélanger, D. (2021). Investigation of electrochemical and chemical processes
occurring at positive potentials in “Water-in-Salt” electrolytes. Journal of
The Electrochemical Society. IOP Publishing. https://doi.org/10.1149/1945-7111/ac0300
chicago: Maffre, Marion, Roza Bouchal, Stefan Alexander Freunberger, Niklas Lindahl,
Patrik Johansson, Frédéric Favier, Olivier Fontaine, and Daniel Bélanger. “Investigation
of Electrochemical and Chemical Processes Occurring at Positive Potentials in
‘Water-in-Salt’ Electrolytes.” Journal of The Electrochemical Society.
IOP Publishing, 2021. https://doi.org/10.1149/1945-7111/ac0300.
ieee: M. Maffre et al., “Investigation of electrochemical and chemical processes
occurring at positive potentials in ‘Water-in-Salt’ electrolytes,” Journal
of The Electrochemical Society, vol. 168, no. 5. IOP Publishing, 2021.
ista: Maffre M, Bouchal R, Freunberger SA, Lindahl N, Johansson P, Favier F, Fontaine
O, Bélanger D. 2021. Investigation of electrochemical and chemical processes occurring
at positive potentials in “Water-in-Salt” electrolytes. Journal of The Electrochemical
Society. 168(5), 050550.
mla: Maffre, Marion, et al. “Investigation of Electrochemical and Chemical Processes
Occurring at Positive Potentials in ‘Water-in-Salt’ Electrolytes.” Journal
of The Electrochemical Society, vol. 168, no. 5, 050550, IOP Publishing, 2021,
doi:10.1149/1945-7111/ac0300.
short: M. Maffre, R. Bouchal, S.A. Freunberger, N. Lindahl, P. Johansson, F. Favier,
O. Fontaine, D. Bélanger, Journal of The Electrochemical Society 168 (2021).
date_created: 2021-06-03T09:58:38Z
date_published: 2021-05-01T00:00:00Z
date_updated: 2023-09-05T13:25:30Z
day: '01'
department:
- _id: StFr
doi: 10.1149/1945-7111/ac0300
external_id:
isi:
- '000657724200001'
intvolume: ' 168'
isi: 1
issue: '5'
keyword:
- Renewable Energy
- Sustainability and the Environment
- Electrochemistry
- Materials Chemistry
- Electronic
- Optical and Magnetic Materials
- Surfaces
- Coatings and Films
- Condensed Matter Physics
language:
- iso: eng
month: '05'
oa_version: None
publication: Journal of The Electrochemical Society
publication_identifier:
eissn:
- 1945-7111
issn:
- 0013-4651
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
status: public
title: Investigation of electrochemical and chemical processes occurring at positive
potentials in “Water-in-Salt” electrolytes
type: journal_article
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
volume: 168
year: '2021'
...
---
_id: '13367'
abstract:
- lang: eng
text: Confining molecules can fundamentally change their chemical and physical properties.
Confinement effects are considered instrumental at various stages of the origins
of life, and life continues to rely on layers of compartmentalization to maintain
an out-of-equilibrium state and efficiently synthesize complex biomolecules under
mild conditions. As interest in synthetic confined systems grows, we are realizing
that the principles governing reactivity under confinement are the same in abiological
systems as they are in nature. In this Review, we categorize the ways in which
nanoconfinement effects impact chemical reactivity in synthetic systems. Under
nanoconfinement, chemical properties can be modulated to increase reaction rates,
enhance selectivity and stabilize reactive species. Confinement effects also lead
to changes in physical properties. The fluorescence of light emitters, the colours
of dyes and electronic communication between electroactive species can all be
tuned under confinement. Within each of these categories, we elucidate design
principles and strategies that are widely applicable across a range of confined
systems, specifically highlighting examples of different nanocompartments that
influence reactivity in similar ways.
article_processing_charge: No
article_type: original
author:
- first_name: Angela B.
full_name: Grommet, Angela B.
last_name: Grommet
- first_name: Moran
full_name: Feller, Moran
last_name: Feller
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Grommet AB, Feller M, Klajn R. Chemical reactivity under nanoconfinement. Nature
Nanotechnology. 2020;15:256-271. doi:10.1038/s41565-020-0652-2
apa: Grommet, A. B., Feller, M., & Klajn, R. (2020). Chemical reactivity under
nanoconfinement. Nature Nanotechnology. Springer Nature. https://doi.org/10.1038/s41565-020-0652-2
chicago: Grommet, Angela B., Moran Feller, and Rafal Klajn. “Chemical Reactivity
under Nanoconfinement.” Nature Nanotechnology. Springer Nature, 2020. https://doi.org/10.1038/s41565-020-0652-2.
ieee: A. B. Grommet, M. Feller, and R. Klajn, “Chemical reactivity under nanoconfinement,”
Nature Nanotechnology, vol. 15. Springer Nature, pp. 256–271, 2020.
ista: Grommet AB, Feller M, Klajn R. 2020. Chemical reactivity under nanoconfinement.
Nature Nanotechnology. 15, 256–271.
mla: Grommet, Angela B., et al. “Chemical Reactivity under Nanoconfinement.” Nature
Nanotechnology, vol. 15, Springer Nature, 2020, pp. 256–71, doi:10.1038/s41565-020-0652-2.
short: A.B. Grommet, M. Feller, R. Klajn, Nature Nanotechnology 15 (2020) 256–271.
date_created: 2023-08-01T09:37:39Z
date_published: 2020-04-17T00:00:00Z
date_updated: 2023-08-07T10:29:06Z
day: '17'
doi: 10.1038/s41565-020-0652-2
extern: '1'
external_id:
pmid:
- '32303705'
intvolume: ' 15'
keyword:
- Electrical and Electronic Engineering
- Condensed Matter Physics
- General Materials Science
- Biomedical Engineering
- Atomic and Molecular Physics
- and Optics
- Bioengineering
language:
- iso: eng
month: '04'
oa_version: None
page: 256-271
pmid: 1
publication: Nature Nanotechnology
publication_identifier:
eissn:
- 1748-3395
issn:
- 1748-3387
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Chemical reactivity under nanoconfinement
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 15
year: '2020'
...
---
_id: '9069'
abstract:
- lang: eng
text: In the quest for alternate and efficient electrode materials, ternary metal
electrocatalysts (TMEs), part of the perovskite family, were synthesized and tested
for methanol electro-oxidation in alkaline media. La0.5Ca0.5MO3 (M = Ni, Co, or
Mn) was synthesized via sol-gel method. X-ray diffraction analysis revealed that
the perovskite crystal structure possesses characteristic sharp and crystalline
peaks for all synthesized ternary electrocatalysts. The average particle size
calculated using Debye–Scherrer equation was in the order of La0.5Ca0.5NiO3 (LCNO)
> La0.5Ca0.5CoO3 (LCCO)> La0.5Ca0.5MnO3 (LCMO). The elemental composition of as
prepared sample, LCCO was investigated via x-ray fluorescence spectroscopy. The
qualitative and quantitative analysis revealed the presence of La, Ca and Co in
parent crystal structure with percentage compositions of 9.0, 3.12 and 87.82%
respectively. The particle size distribution was homogenous, as determined by
scanning electron and transmission electron microscopes. The electrocatalytic
activity of the synthesized ternary electrocatalysts was studied electrochemically
by cyclic voltammetry. The calculated diffusion coefficient values showed that
electrode surface of LCNO and LCCO have limited efficiency for diffusion related
phenomenon. The heterogeneous rate constants inferred better electrode kinetics
of LCCO and LCNO which exhibited good electrocatalytic behavior; sharp anodic
peaks were observed in the potential range of +0.3 to 0.6 V and +0.6 to 0.8 V,
respectively. Methanol electro-oxidation was found minimal in case of LCMO sample.
We have observed that Co substitution at B-site of perovskite electrode materials
attains better electrochemical properties, thus in relation with reported literature.
article_number: 1250g6
article_processing_charge: No
article_type: original
author:
- first_name: Tayyaba
full_name: Hussain, Tayyaba
last_name: Hussain
- first_name: Muhammad
full_name: Nauman, Muhammad
id: 32c21954-2022-11eb-9d5f-af9f93c24e71
last_name: Nauman
orcid: 0000-0002-2111-4846
- first_name: Sana
full_name: Sabahat, Sana
last_name: Sabahat
- first_name: Saira
full_name: Arif, Saira
last_name: Arif
citation:
ama: Hussain T, Nauman M, Sabahat S, Arif S. Synthesis of ternary electrocatalysts
for exploration of methanol electro-oxidation in alkaline media. Materials
Research Express. 2020;6(12). doi:10.1088/2053-1591/ab6886
apa: Hussain, T., Nauman, M., Sabahat, S., & Arif, S. (2020). Synthesis of ternary
electrocatalysts for exploration of methanol electro-oxidation in alkaline media.
Materials Research Express. IOP Publishing. https://doi.org/10.1088/2053-1591/ab6886
chicago: Hussain, Tayyaba, Muhammad Nauman, Sana Sabahat, and Saira Arif. “Synthesis
of Ternary Electrocatalysts for Exploration of Methanol Electro-Oxidation in Alkaline
Media.” Materials Research Express. IOP Publishing, 2020. https://doi.org/10.1088/2053-1591/ab6886.
ieee: T. Hussain, M. Nauman, S. Sabahat, and S. Arif, “Synthesis of ternary electrocatalysts
for exploration of methanol electro-oxidation in alkaline media,” Materials
Research Express, vol. 6, no. 12. IOP Publishing, 2020.
ista: Hussain T, Nauman M, Sabahat S, Arif S. 2020. Synthesis of ternary electrocatalysts
for exploration of methanol electro-oxidation in alkaline media. Materials Research
Express. 6(12), 1250g6.
mla: Hussain, Tayyaba, et al. “Synthesis of Ternary Electrocatalysts for Exploration
of Methanol Electro-Oxidation in Alkaline Media.” Materials Research Express,
vol. 6, no. 12, 1250g6, IOP Publishing, 2020, doi:10.1088/2053-1591/ab6886.
short: T. Hussain, M. Nauman, S. Sabahat, S. Arif, Materials Research Express 6
(2020).
date_created: 2021-02-02T15:53:57Z
date_published: 2020-01-15T00:00:00Z
date_updated: 2021-02-04T07:21:35Z
day: '15'
doi: 10.1088/2053-1591/ab6886
extern: '1'
intvolume: ' 6'
issue: '12'
keyword:
- Electronic
- Optical and Magnetic Materials
- Surfaces
- Coatings and Films
- Polymers and Plastics
- Metals and Alloys
- Biomaterials
language:
- iso: eng
month: '01'
oa_version: None
publication: Materials Research Express
publication_identifier:
issn:
- 2053-1591
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
status: public
title: Synthesis of ternary electrocatalysts for exploration of methanol electro-oxidation
in alkaline media
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 6
year: '2020'
...
---
_id: '8455'
abstract:
- lang: eng
text: Solid-state NMR spectroscopy allows the characterization of the structure,
interactions and dynamics of insoluble and/or very large proteins. Sensitivity
and resolution are often major challenges for obtaining atomic-resolution information,
in particular for very large protein complexes. Here we show that the use of deuterated,
specifically CH3-labelled proteins result in significant sensitivity gains compared
to previously employed CHD2 labelling, while line widths increase only marginally.
We apply this labelling strategy to a 468 kDa-large dodecameric aminopeptidase,
TET2, and the 1.6 MDa-large 50S ribosome subunit of Thermus thermophilus.
article_processing_charge: No
article_type: original
author:
- first_name: Vilius
full_name: Kurauskas, Vilius
last_name: Kurauskas
- first_name: Elodie
full_name: Crublet, Elodie
last_name: Crublet
- first_name: Pavel
full_name: Macek, Pavel
last_name: Macek
- first_name: Rime
full_name: Kerfah, Rime
last_name: Kerfah
- first_name: Diego F.
full_name: Gauto, Diego F.
last_name: Gauto
- first_name: Jérôme
full_name: Boisbouvier, Jérôme
last_name: Boisbouvier
- first_name: Paul
full_name: Schanda, Paul
id: 7B541462-FAF6-11E9-A490-E8DFE5697425
last_name: Schanda
orcid: 0000-0002-9350-7606
citation:
ama: 'Kurauskas V, Crublet E, Macek P, et al. Sensitive proton-detected solid-state
NMR spectroscopy of large proteins with selective CH3labelling: Application to
the 50S ribosome subunit. Chemical Communications. 2016;52(61):9558-9561.
doi:10.1039/c6cc04484k'
apa: 'Kurauskas, V., Crublet, E., Macek, P., Kerfah, R., Gauto, D. F., Boisbouvier,
J., & Schanda, P. (2016). Sensitive proton-detected solid-state NMR spectroscopy
of large proteins with selective CH3labelling: Application to the 50S ribosome
subunit. Chemical Communications. Royal Society of Chemistry. https://doi.org/10.1039/c6cc04484k'
chicago: 'Kurauskas, Vilius, Elodie Crublet, Pavel Macek, Rime Kerfah, Diego F.
Gauto, Jérôme Boisbouvier, and Paul Schanda. “Sensitive Proton-Detected Solid-State
NMR Spectroscopy of Large Proteins with Selective CH3labelling: Application to
the 50S Ribosome Subunit.” Chemical Communications. Royal Society of Chemistry,
2016. https://doi.org/10.1039/c6cc04484k.'
ieee: 'V. Kurauskas et al., “Sensitive proton-detected solid-state NMR spectroscopy
of large proteins with selective CH3labelling: Application to the 50S ribosome
subunit,” Chemical Communications, vol. 52, no. 61. Royal Society of Chemistry,
pp. 9558–9561, 2016.'
ista: 'Kurauskas V, Crublet E, Macek P, Kerfah R, Gauto DF, Boisbouvier J, Schanda
P. 2016. Sensitive proton-detected solid-state NMR spectroscopy of large proteins
with selective CH3labelling: Application to the 50S ribosome subunit. Chemical
Communications. 52(61), 9558–9561.'
mla: 'Kurauskas, Vilius, et al. “Sensitive Proton-Detected Solid-State NMR Spectroscopy
of Large Proteins with Selective CH3labelling: Application to the 50S Ribosome
Subunit.” Chemical Communications, vol. 52, no. 61, Royal Society of Chemistry,
2016, pp. 9558–61, doi:10.1039/c6cc04484k.'
short: V. Kurauskas, E. Crublet, P. Macek, R. Kerfah, D.F. Gauto, J. Boisbouvier,
P. Schanda, Chemical Communications 52 (2016) 9558–9561.
date_created: 2020-09-18T10:07:29Z
date_published: 2016-07-04T00:00:00Z
date_updated: 2021-01-12T08:19:23Z
day: '04'
doi: 10.1039/c6cc04484k
extern: '1'
intvolume: ' 52'
issue: '61'
keyword:
- Materials Chemistry
- Electronic
- Optical and Magnetic Materials
- General Chemistry
- Surfaces
- Coatings and Films
- Metals and Alloys
- Ceramics and Composites
- Catalysis
language:
- iso: eng
month: '07'
oa_version: None
page: 9558-9561
publication: Chemical Communications
publication_identifier:
issn:
- 1359-7345
- 1364-548X
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
status: public
title: 'Sensitive proton-detected solid-state NMR spectroscopy of large proteins with
selective CH3labelling: Application to the 50S ribosome subunit'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 52
year: '2016'
...
---
_id: '13387'
abstract:
- lang: eng
text: Come on in, the water's fine! Non-photoresponsive nanoparticles can be reversibly
assembled using light by placing them in an aqueous solution of a photoacid.
Upon exposure to visible light, the photoacid reduces the pH of the solution,
which induces attractive interactions between the nanoparticles. In the dark,
the resulting nanoparticle aggregates spontaneously disassemble. The process can
be repeated many times.
article_processing_charge: No
article_type: original
author:
- first_name: Dipak
full_name: Samanta, Dipak
last_name: Samanta
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Samanta D, Klajn R. Aqueous light-controlled self-assembly of nanoparticles.
Advanced Optical Materials. 2016;4(9):1373-1377. doi:10.1002/adom.201600364
apa: Samanta, D., & Klajn, R. (2016). Aqueous light-controlled self-assembly
of nanoparticles. Advanced Optical Materials. Wiley. https://doi.org/10.1002/adom.201600364
chicago: Samanta, Dipak, and Rafal Klajn. “Aqueous Light-Controlled Self-Assembly
of Nanoparticles.” Advanced Optical Materials. Wiley, 2016. https://doi.org/10.1002/adom.201600364.
ieee: D. Samanta and R. Klajn, “Aqueous light-controlled self-assembly of nanoparticles,”
Advanced Optical Materials, vol. 4, no. 9. Wiley, pp. 1373–1377, 2016.
ista: Samanta D, Klajn R. 2016. Aqueous light-controlled self-assembly of nanoparticles.
Advanced Optical Materials. 4(9), 1373–1377.
mla: Samanta, Dipak, and Rafal Klajn. “Aqueous Light-Controlled Self-Assembly of
Nanoparticles.” Advanced Optical Materials, vol. 4, no. 9, Wiley, 2016,
pp. 1373–77, doi:10.1002/adom.201600364.
short: D. Samanta, R. Klajn, Advanced Optical Materials 4 (2016) 1373–1377.
date_created: 2023-08-01T09:42:49Z
date_published: 2016-09-01T00:00:00Z
date_updated: 2023-08-07T12:37:53Z
day: '01'
doi: 10.1002/adom.201600364
extern: '1'
intvolume: ' 4'
issue: '9'
keyword:
- Atomic and Molecular Physics
- and Optics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
month: '09'
oa_version: None
page: 1373-1377
publication: Advanced Optical Materials
publication_identifier:
eissn:
- 2195-1071
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Aqueous light-controlled self-assembly of nanoparticles
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 4
year: '2016'
...
---
_id: '14012'
abstract:
- lang: eng
text: Monochromatization of high-harmonic sources has opened fascinating perspectives
regarding time-resolved photoemission from all phases of matter. Such studies
have invariably involved the use of spectral filters or spectrally dispersive
optical components that are inherently lossy and technically complex. Here we
present a new technique for the spectral selection of near-threshold harmonics
and their spatial separation from the driving beams without any optical elements.
We discover the existence of a narrow phase-matching gate resulting from the combination
of the non-collinear generation geometry in an extended medium, atomic resonances
and absorption. Our technique offers a filter contrast of up to 104 for the selected
harmonics against the adjacent ones and offers multiple temporally synchronized
beamlets in a single unified scheme. We demonstrate the selective generation of
133, 80 or 56 nm femtosecond pulses from a 400-nm driver, which is specific to
the target gas. These results open new pathways towards phase-sensitive multi-pulse
spectroscopy in the vacuum- and extreme-ultraviolet, and frequency-selective output
coupling from enhancement cavities.
article_processing_charge: No
article_type: original
author:
- first_name: Rajendran
full_name: Rajeev, Rajendran
last_name: Rajeev
- first_name: Johannes
full_name: Hellwagner, Johannes
last_name: Hellwagner
- first_name: Anne
full_name: Schumacher, Anne
last_name: Schumacher
- first_name: Inga
full_name: Jordan, Inga
last_name: Jordan
- first_name: Martin
full_name: Huppert, Martin
last_name: Huppert
- first_name: Andres
full_name: Tehlar, Andres
last_name: Tehlar
- first_name: Bhargava Ram
full_name: Niraghatam, Bhargava Ram
last_name: Niraghatam
- first_name: Denitsa Rangelova
full_name: Baykusheva, Denitsa Rangelova
id: 71b4d059-2a03-11ee-914d-dfa3beed6530
last_name: Baykusheva
- first_name: 'Nan'
full_name: Lin, Nan
last_name: Lin
- first_name: Aaron
full_name: von Conta, Aaron
last_name: von Conta
- first_name: Hans Jakob
full_name: Wörner, Hans Jakob
last_name: Wörner
citation:
ama: 'Rajeev R, Hellwagner J, Schumacher A, et al. In situ frequency gating and
beam splitting of vacuum- and extreme-ultraviolet pulses. Light: Science &
Applications. 2016;5(11):e16170-e16170. doi:10.1038/lsa.2016.170'
apa: 'Rajeev, R., Hellwagner, J., Schumacher, A., Jordan, I., Huppert, M., Tehlar,
A., … Wörner, H. J. (2016). In situ frequency gating and beam splitting of vacuum-
and extreme-ultraviolet pulses. Light: Science & Applications. Springer
Nature. https://doi.org/10.1038/lsa.2016.170'
chicago: 'Rajeev, Rajendran, Johannes Hellwagner, Anne Schumacher, Inga Jordan,
Martin Huppert, Andres Tehlar, Bhargava Ram Niraghatam, et al. “In Situ Frequency
Gating and Beam Splitting of Vacuum- and Extreme-Ultraviolet Pulses.” Light:
Science & Applications. Springer Nature, 2016. https://doi.org/10.1038/lsa.2016.170.'
ieee: 'R. Rajeev et al., “In situ frequency gating and beam splitting of
vacuum- and extreme-ultraviolet pulses,” Light: Science & Applications,
vol. 5, no. 11. Springer Nature, pp. e16170–e16170, 2016.'
ista: 'Rajeev R, Hellwagner J, Schumacher A, Jordan I, Huppert M, Tehlar A, Niraghatam
BR, Baykusheva DR, Lin N, von Conta A, Wörner HJ. 2016. In situ frequency gating
and beam splitting of vacuum- and extreme-ultraviolet pulses. Light: Science &
Applications. 5(11), e16170–e16170.'
mla: 'Rajeev, Rajendran, et al. “In Situ Frequency Gating and Beam Splitting of
Vacuum- and Extreme-Ultraviolet Pulses.” Light: Science & Applications,
vol. 5, no. 11, Springer Nature, 2016, pp. e16170–e16170, doi:10.1038/lsa.2016.170.'
short: 'R. Rajeev, J. Hellwagner, A. Schumacher, I. Jordan, M. Huppert, A. Tehlar,
B.R. Niraghatam, D.R. Baykusheva, N. Lin, A. von Conta, H.J. Wörner, Light: Science
& Applications 5 (2016) e16170–e16170.'
date_created: 2023-08-10T06:37:25Z
date_published: 2016-11-01T00:00:00Z
date_updated: 2023-08-22T08:46:05Z
day: '01'
doi: 10.1038/lsa.2016.170
extern: '1'
external_id:
pmid:
- '30167130'
intvolume: ' 5'
issue: '11'
keyword:
- Atomic and Molecular Physics
- and Optics
- Electronic
- Optical and Magnetic Materials
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1038/lsa.2016.170
month: '11'
oa: 1
oa_version: Published Version
page: e16170-e16170
pmid: 1
publication: 'Light: Science & Applications'
publication_identifier:
eissn:
- 2047-7538
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: In situ frequency gating and beam splitting of vacuum- and extreme-ultraviolet
pulses
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 5
year: '2016'
...
---
_id: '13392'
abstract:
- lang: eng
text: The chemical behaviour of molecules can be significantly modified by confinement
to volumes comparable to the dimensions of the molecules. Although such confined
spaces can be found in various nanostructured materials, such as zeolites, nanoporous
organic frameworks and colloidal nanocrystal assemblies, the slow diffusion of
molecules in and out of these materials has greatly hampered studying the effect
of confinement on their physicochemical properties. Here, we show that this diffusion
limitation can be overcome by reversibly creating and destroying confined environments
by means of ultraviolet and visible light irradiation. We use colloidal nanocrystals
functionalized with light-responsive ligands that readily self-assemble and trap
various molecules from the surrounding bulk solution. Once trapped, these molecules
can undergo chemical reactions with increased rates and with stereoselectivities
significantly different from those in bulk solution. Illumination with visible
light disassembles these nanoflasks, releasing the product in solution and thereby
establishes a catalytic cycle. These dynamic nanoflasks can be useful for studying
chemical reactivities in confined environments and for synthesizing molecules
that are otherwise hard to achieve in bulk solution.
article_processing_charge: No
article_type: original
author:
- first_name: Hui
full_name: Zhao, Hui
last_name: Zhao
- first_name: Soumyo
full_name: Sen, Soumyo
last_name: Sen
- first_name: T.
full_name: Udayabhaskararao, T.
last_name: Udayabhaskararao
- first_name: Michał
full_name: Sawczyk, Michał
last_name: Sawczyk
- first_name: Kristina
full_name: Kučanda, Kristina
last_name: Kučanda
- first_name: Debasish
full_name: Manna, Debasish
last_name: Manna
- first_name: Pintu K.
full_name: Kundu, Pintu K.
last_name: Kundu
- first_name: Ji-Woong
full_name: Lee, Ji-Woong
last_name: Lee
- first_name: Petr
full_name: Král, Petr
last_name: Král
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Zhao H, Sen S, Udayabhaskararao T, et al. Reversible trapping and reaction
acceleration within dynamically self-assembling nanoflasks. Nature Nanotechnology.
2015;11:82-88. doi:10.1038/nnano.2015.256
apa: Zhao, H., Sen, S., Udayabhaskararao, T., Sawczyk, M., Kučanda, K., Manna, D.,
… Klajn, R. (2015). Reversible trapping and reaction acceleration within dynamically
self-assembling nanoflasks. Nature Nanotechnology. Springer Nature. https://doi.org/10.1038/nnano.2015.256
chicago: Zhao, Hui, Soumyo Sen, T. Udayabhaskararao, Michał Sawczyk, Kristina Kučanda,
Debasish Manna, Pintu K. Kundu, Ji-Woong Lee, Petr Král, and Rafal Klajn. “Reversible
Trapping and Reaction Acceleration within Dynamically Self-Assembling Nanoflasks.”
Nature Nanotechnology. Springer Nature, 2015. https://doi.org/10.1038/nnano.2015.256.
ieee: H. Zhao et al., “Reversible trapping and reaction acceleration within
dynamically self-assembling nanoflasks,” Nature Nanotechnology, vol. 11.
Springer Nature, pp. 82–88, 2015.
ista: Zhao H, Sen S, Udayabhaskararao T, Sawczyk M, Kučanda K, Manna D, Kundu PK,
Lee J-W, Král P, Klajn R. 2015. Reversible trapping and reaction acceleration
within dynamically self-assembling nanoflasks. Nature Nanotechnology. 11, 82–88.
mla: Zhao, Hui, et al. “Reversible Trapping and Reaction Acceleration within Dynamically
Self-Assembling Nanoflasks.” Nature Nanotechnology, vol. 11, Springer Nature,
2015, pp. 82–88, doi:10.1038/nnano.2015.256.
short: H. Zhao, S. Sen, T. Udayabhaskararao, M. Sawczyk, K. Kučanda, D. Manna, P.K.
Kundu, J.-W. Lee, P. Král, R. Klajn, Nature Nanotechnology 11 (2015) 82–88.
date_created: 2023-08-01T09:44:04Z
date_published: 2015-11-23T00:00:00Z
date_updated: 2023-08-07T12:55:46Z
day: '23'
doi: 10.1038/nnano.2015.256
extern: '1'
external_id:
pmid:
- '26595335'
intvolume: ' 11'
keyword:
- Electrical and Electronic Engineering
- Condensed Matter Physics
- General Materials Science
- Biomedical Engineering
- Atomic and Molecular Physics
- and Optics
- Bioengineering
language:
- iso: eng
month: '11'
oa_version: None
page: 82-88
pmid: 1
publication: Nature Nanotechnology
publication_identifier:
eissn:
- 1748-3395
issn:
- 1748-3387
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Reversible trapping and reaction acceleration within dynamically self-assembling
nanoflasks
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 11
year: '2015'
...
---
_id: '13395'
abstract:
- lang: eng
text: Metallic nanoparticles co-functionalised with monolayers of UV- and CO2-sensitive
ligands were prepared and shown to respond to these two types of stimuli reversibly
and in an orthogonal fashion. The composition of the coating could be tailored
to yield nanoparticles capable of aggregating exclusively when both UV and CO2
were applied at the same time, analogously to the behaviour of an AND logic gate.
article_processing_charge: No
article_type: original
author:
- first_name: Ji-Woong
full_name: Lee, Ji-Woong
last_name: Lee
- first_name: Rafal
full_name: Klajn, Rafal
id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
last_name: Klajn
citation:
ama: Lee J-W, Klajn R. Dual-responsive nanoparticles that aggregate under the simultaneous
action of light and CO2. Chemical Communications. 2015;51(11):2036-2039.
doi:10.1039/c4cc08541h
apa: Lee, J.-W., & Klajn, R. (2015). Dual-responsive nanoparticles that aggregate
under the simultaneous action of light and CO2. Chemical Communications.
Royal Society of Chemistry. https://doi.org/10.1039/c4cc08541h
chicago: Lee, Ji-Woong, and Rafal Klajn. “Dual-Responsive Nanoparticles That Aggregate
under the Simultaneous Action of Light and CO2.” Chemical Communications.
Royal Society of Chemistry, 2015. https://doi.org/10.1039/c4cc08541h.
ieee: J.-W. Lee and R. Klajn, “Dual-responsive nanoparticles that aggregate under
the simultaneous action of light and CO2,” Chemical Communications, vol.
51, no. 11. Royal Society of Chemistry, pp. 2036–2039, 2015.
ista: Lee J-W, Klajn R. 2015. Dual-responsive nanoparticles that aggregate under
the simultaneous action of light and CO2. Chemical Communications. 51(11), 2036–2039.
mla: Lee, Ji-Woong, and Rafal Klajn. “Dual-Responsive Nanoparticles That Aggregate
under the Simultaneous Action of Light and CO2.” Chemical Communications,
vol. 51, no. 11, Royal Society of Chemistry, 2015, pp. 2036–39, doi:10.1039/c4cc08541h.
short: J.-W. Lee, R. Klajn, Chemical Communications 51 (2015) 2036–2039.
date_created: 2023-08-01T09:44:48Z
date_published: 2015-11-18T00:00:00Z
date_updated: 2023-08-07T13:01:53Z
day: '18'
doi: 10.1039/c4cc08541h
extern: '1'
external_id:
pmid:
- '25417754'
intvolume: ' 51'
issue: '11'
keyword:
- Materials Chemistry
- Metals and Alloys
- Surfaces
- Coatings and Films
- General Chemistry
- Ceramics and Composites
- Electronic
- Optical and Magnetic Materials
- Catalysis
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1039/C4CC08541H
month: '11'
oa: 1
oa_version: Published Version
page: 2036-2039
pmid: 1
publication: Chemical Communications
publication_identifier:
eissn:
- 1364-548X
issn:
- 1359-7345
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dual-responsive nanoparticles that aggregate under the simultaneous action
of light and CO2
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 51
year: '2015'
...