---
_id: '13971'
abstract:
- lang: eng
text: When in equilibrium, thermal forces agitate molecules, which then diffuse,
collide and bind to form materials. However, the space of accessible structures
in which micron-scale particles can be organized by thermal forces is limited,
owing to the slow dynamics and metastable states. Active agents in a passive fluid
generate forces and flows, forming a bath with active fluctuations. Two unanswered
questions are whether those active agents can drive the assembly of passive components
into unconventional states and which material properties they will exhibit. Here
we show that passive, sticky beads immersed in a bath of swimming Escherichia
coli bacteria aggregate into unconventional clusters and gels that are controlled
by the activity of the bath. We observe a slow but persistent rotation of the
aggregates that originates in the chirality of the E. coli flagella and directs
aggregation into structures that are not accessible thermally. We elucidate the
aggregation mechanism with a numerical model of spinning, sticky beads and reproduce
quantitatively the experimental results. We show that internal activity controls
the phase diagram and the structure of the aggregates. Overall, our results highlight
the promising role of active baths in designing the structural and mechanical
properties of materials with unconventional phases.
acknowledgement: D.G. and J.P. thank E. Krasnopeeva, C. Guet, G. Guessous and T. Hwa
for providing the E. coli strains. This material is based upon work supported by
the US Department of Energy under award DE-SC0019769. I.P. acknowledges funding
by the European Union’s Horizon 2020 research and innovation programme under Marie
Skłodowska-Curie Grant Agreement No. 101034413. A.Š. acknowledges funding from the
European Research Council under the European Union’s Horizon 2020 research and innovation
programme (Grant No. 802960). M.C.U. acknowledges funding from the European Union’s
Horizon 2020 research and innovation programme under Marie Skłodowska-Curie Grant
Agreement No. 754411.
article_processing_charge: Yes
article_type: original
author:
- first_name: Daniel
full_name: Grober, Daniel
id: abdfc56f-34fb-11ee-bd33-fd766fce5a99
last_name: Grober
- first_name: Ivan
full_name: Palaia, Ivan
id: 9c805cd2-4b75-11ec-a374-db6dd0ed57fa
last_name: Palaia
orcid: ' 0000-0002-8843-9485 '
- first_name: Mehmet C
full_name: Ucar, Mehmet C
id: 50B2A802-6007-11E9-A42B-EB23E6697425
last_name: Ucar
orcid: 0000-0003-0506-4217
- first_name: Edouard B
full_name: Hannezo, Edouard B
id: 3A9DB764-F248-11E8-B48F-1D18A9856A87
last_name: Hannezo
orcid: 0000-0001-6005-1561
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Grober D, Palaia I, Ucar MC, Hannezo EB, Šarić A, Palacci JA. Unconventional
colloidal aggregation in chiral bacterial baths. Nature Physics. 2023;19:1680-1688.
doi:10.1038/s41567-023-02136-x
apa: Grober, D., Palaia, I., Ucar, M. C., Hannezo, E. B., Šarić, A., & Palacci,
J. A. (2023). Unconventional colloidal aggregation in chiral bacterial baths.
Nature Physics. Springer Nature. https://doi.org/10.1038/s41567-023-02136-x
chicago: Grober, Daniel, Ivan Palaia, Mehmet C Ucar, Edouard B Hannezo, Anđela Šarić,
and Jérémie A Palacci. “Unconventional Colloidal Aggregation in Chiral Bacterial
Baths.” Nature Physics. Springer Nature, 2023. https://doi.org/10.1038/s41567-023-02136-x.
ieee: D. Grober, I. Palaia, M. C. Ucar, E. B. Hannezo, A. Šarić, and J. A. Palacci,
“Unconventional colloidal aggregation in chiral bacterial baths,” Nature Physics,
vol. 19. Springer Nature, pp. 1680–1688, 2023.
ista: Grober D, Palaia I, Ucar MC, Hannezo EB, Šarić A, Palacci JA. 2023. Unconventional
colloidal aggregation in chiral bacterial baths. Nature Physics. 19, 1680–1688.
mla: Grober, Daniel, et al. “Unconventional Colloidal Aggregation in Chiral Bacterial
Baths.” Nature Physics, vol. 19, Springer Nature, 2023, pp. 1680–88, doi:10.1038/s41567-023-02136-x.
short: D. Grober, I. Palaia, M.C. Ucar, E.B. Hannezo, A. Šarić, J.A. Palacci, Nature
Physics 19 (2023) 1680–1688.
date_created: 2023-08-06T22:01:11Z
date_published: 2023-11-01T00:00:00Z
date_updated: 2024-01-30T12:26:55Z
day: '01'
ddc:
- '530'
department:
- _id: EdHa
- _id: AnSa
- _id: JePa
doi: 10.1038/s41567-023-02136-x
ec_funded: 1
external_id:
isi:
- '001037346400005'
file:
- access_level: open_access
checksum: 7e282c2ebc0ac82125a04f6b4742d4c1
content_type: application/pdf
creator: dernst
date_created: 2024-01-30T12:26:08Z
date_updated: 2024-01-30T12:26:08Z
file_id: '14906'
file_name: 2023_NaturePhysics_Grober.pdf
file_size: 6365607
relation: main_file
success: 1
file_date_updated: 2024-01-30T12:26:08Z
has_accepted_license: '1'
intvolume: ' 19'
isi: 1
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
page: 1680-1688
project:
- _id: fc2ed2f7-9c52-11eb-aca3-c01059dda49c
call_identifier: H2020
grant_number: '101034413'
name: 'IST-BRIDGE: International postdoctoral program'
- _id: eba2549b-77a9-11ec-83b8-a81e493eae4e
call_identifier: H2020
grant_number: '802960'
name: 'Non-Equilibrium Protein Assembly: from Building Blocks to Biological Machines'
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Nature Physics
publication_identifier:
eissn:
- 1745-2481
issn:
- 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Unconventional colloidal aggregation in chiral bacterial baths
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: 19
year: '2023'
...
---
_id: '12822'
abstract:
- lang: eng
text: Gears and cogwheels are elemental components of machines. They restrain degrees
of freedom and channel power into a specified motion. Building and powering small-scale
cogwheels are key steps toward feasible micro and nanomachinery. Assembly, energy
injection, and control are, however, a challenge at the microscale. In contrast
with passive gears, whose function is to transmit torques from one to another,
interlocking and untethered active gears have the potential to unveil dynamics
and functions untapped by externally driven mechanisms. Here, it is shown the
assembly and control of a family of self-spinning cogwheels with varying teeth
numbers and study the interlocking of multiple cogwheels. The teeth are formed
by colloidal microswimmers that power the structure. The cogwheels are autonomous
and active, showing persistent rotation. Leveraging the angular momentum of optical
vortices, we control the direction of rotation of the cogwheels. The pairs of
interlocking and active cogwheels that roll over each other in a random walk and
have curvature-dependent mobility are studied. This behavior is leveraged to self-position
parts and program microbots, demonstrating the ability to pick up, direct, and
release a load. The work constitutes a step toward autonomous machinery with external
control as well as (re)programmable microbots and matter.
acknowledgement: 'Army Research Office. Grant Number: W911NF-20-1-0112'
article_number: '2200129'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Quentin
full_name: Martinet, Quentin
id: b37485a8-d343-11eb-a0e9-df8c484ef8ab
last_name: Martinet
- first_name: Antoine
full_name: Aubret, Antoine
last_name: Aubret
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Martinet Q, Aubret A, Palacci JA. Rotation control, interlocking, and self‐positioning
of active cogwheels. Advanced Intelligent Systems. 2023;5(1). doi:10.1002/aisy.202200129
apa: Martinet, Q., Aubret, A., & Palacci, J. A. (2023). Rotation control, interlocking,
and self‐positioning of active cogwheels. Advanced Intelligent Systems.
Wiley. https://doi.org/10.1002/aisy.202200129
chicago: Martinet, Quentin, Antoine Aubret, and Jérémie A Palacci. “Rotation Control,
Interlocking, and Self‐positioning of Active Cogwheels.” Advanced Intelligent
Systems. Wiley, 2023. https://doi.org/10.1002/aisy.202200129.
ieee: Q. Martinet, A. Aubret, and J. A. Palacci, “Rotation control, interlocking,
and self‐positioning of active cogwheels,” Advanced Intelligent Systems,
vol. 5, no. 1. Wiley, 2023.
ista: Martinet Q, Aubret A, Palacci JA. 2023. Rotation control, interlocking, and
self‐positioning of active cogwheels. Advanced Intelligent Systems. 5(1), 2200129.
mla: Martinet, Quentin, et al. “Rotation Control, Interlocking, and Self‐positioning
of Active Cogwheels.” Advanced Intelligent Systems, vol. 5, no. 1, 2200129,
Wiley, 2023, doi:10.1002/aisy.202200129.
short: Q. Martinet, A. Aubret, J.A. Palacci, Advanced Intelligent Systems 5 (2023).
date_created: 2023-04-12T08:30:03Z
date_published: 2023-01-01T00:00:00Z
date_updated: 2023-08-01T14:06:50Z
day: '01'
ddc:
- '530'
department:
- _id: JePa
doi: 10.1002/aisy.202200129
external_id:
arxiv:
- '2201.03333'
isi:
- '000852291200001'
file:
- access_level: open_access
checksum: d48fc41d39892e7fa0d44cb352dd46aa
content_type: application/pdf
creator: dernst
date_created: 2023-04-17T06:44:17Z
date_updated: 2023-04-17T06:44:17Z
file_id: '12840'
file_name: 2023_AdvancedIntelligentSystems_Martinet.pdf
file_size: 2414125
relation: main_file
success: 1
file_date_updated: 2023-04-17T06:44:17Z
has_accepted_license: '1'
intvolume: ' 5'
isi: 1
issue: '1'
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
publication: Advanced Intelligent Systems
publication_identifier:
issn:
- 2640-4567
publication_status: published
publisher: Wiley
quality_controlled: '1'
status: public
title: Rotation control, interlocking, and self‐positioning of active cogwheels
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: '2023'
...
---
_id: '11996'
abstract:
- lang: eng
text: If you mix fruit syrups with alcohol to make a schnapps, the two liquids will
remain perfectly blended forever. But if you mix oil with vinegar to make a vinaigrette,
the oil and vinegar will soon separate back into their previous selves. Such liquid-liquid
phase separation is a thermodynamically driven phenomenon and plays an important
role in many biological processes (1). Although energy injection at the macroscale
can reverse the phase separation—a strong shake is the normal response to a separated
vinaigrette—little is known about the effect of energy added at the microscopic
level on phase separation. This fundamental question has deep ramifications, notably
in biology, because active processes also make the interior of a living cell different
from a dead one. On page 768 of this issue, Adkins et al. (2) examine how mechanical
activity at the microscopic scale affects liquid-liquid phase separation and allows
liquids to climb surfaces.
article_processing_charge: No
article_type: letter_note
author:
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Palacci JA. A soft active matter that can climb walls. Science. 2022;377(6607):710-711.
doi:10.1126/science.adc9202
apa: Palacci, J. A. (2022). A soft active matter that can climb walls. Science.
American Association for the Advancement of Science. https://doi.org/10.1126/science.adc9202
chicago: Palacci, Jérémie A. “A Soft Active Matter That Can Climb Walls.” Science.
American Association for the Advancement of Science, 2022. https://doi.org/10.1126/science.adc9202.
ieee: J. A. Palacci, “A soft active matter that can climb walls,” Science,
vol. 377, no. 6607. American Association for the Advancement of Science, pp. 710–711,
2022.
ista: Palacci JA. 2022. A soft active matter that can climb walls. Science. 377(6607),
710–711.
mla: Palacci, Jérémie A. “A Soft Active Matter That Can Climb Walls.” Science,
vol. 377, no. 6607, American Association for the Advancement of Science, 2022,
pp. 710–11, doi:10.1126/science.adc9202.
short: J.A. Palacci, Science 377 (2022) 710–711.
date_created: 2022-08-28T22:02:00Z
date_published: 2022-08-12T00:00:00Z
date_updated: 2022-09-05T07:37:37Z
day: '12'
department:
- _id: JePa
doi: 10.1126/science.adc9202
external_id:
pmid:
- '35951689 '
intvolume: ' 377'
issue: '6607'
language:
- iso: eng
month: '08'
oa_version: None
page: 710-711
pmid: 1
publication: Science
publication_identifier:
eissn:
- 1095-9203
issn:
- 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: A soft active matter that can climb walls
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 377
year: '2022'
...
---
_id: '10280'
abstract:
- lang: eng
text: 'Machines enabled the Industrial Revolution and are central to modern technological
progress: A machine’s parts transmit forces, motion, and energy to one another
in a predetermined manner. Today’s engineering frontier, building artificial micromachines
that emulate the biological machinery of living organisms, requires faithful assembly
and energy consumption at the microscale. Here, we demonstrate the programmable
assembly of active particles into autonomous metamachines using optical templates.
Metamachines, or machines made of machines, are stable, mobile and autonomous
architectures, whose dynamics stems from the geometry. We use the interplay between
anisotropic force generation of the active colloids with the control of their
orientation by local geometry. This allows autonomous reprogramming of active
particles of the metamachines to achieve multiple functions. It permits the modular
assembly of metamachines by fusion, reconfiguration of metamachines and, we anticipate,
a shift in focus of self-assembly towards active matter and reprogrammable materials.'
acknowledgement: The authors thank R. Jazzar for useful advice regarding the synthesis
of heterodimers. We thank S. Sacanna for critical reading. This material is based
upon work supported by the National Science Foundation under Grant No. DMR-1554724
and Department of Army Research under grant W911NF-20-1-0112.
article_number: '6398'
article_processing_charge: Yes
article_type: original
author:
- first_name: Antoine
full_name: Aubret, Antoine
last_name: Aubret
- first_name: Quentin
full_name: Martinet, Quentin
id: b37485a8-d343-11eb-a0e9-df8c484ef8ab
last_name: Martinet
orcid: 0000-0002-2916-6632
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Aubret A, Martinet Q, Palacci JA. Metamachines of pluripotent colloids. Nature
Communications. 2021;12(1). doi:10.1038/s41467-021-26699-6
apa: Aubret, A., Martinet, Q., & Palacci, J. A. (2021). Metamachines of pluripotent
colloids. Nature Communications. Springer Nature. https://doi.org/10.1038/s41467-021-26699-6
chicago: Aubret, Antoine, Quentin Martinet, and Jérémie A Palacci. “Metamachines
of Pluripotent Colloids.” Nature Communications. Springer Nature, 2021.
https://doi.org/10.1038/s41467-021-26699-6.
ieee: A. Aubret, Q. Martinet, and J. A. Palacci, “Metamachines of pluripotent colloids,”
Nature Communications, vol. 12, no. 1. Springer Nature, 2021.
ista: Aubret A, Martinet Q, Palacci JA. 2021. Metamachines of pluripotent colloids.
Nature Communications. 12(1), 6398.
mla: Aubret, Antoine, et al. “Metamachines of Pluripotent Colloids.” Nature Communications,
vol. 12, no. 1, 6398, Springer Nature, 2021, doi:10.1038/s41467-021-26699-6.
short: A. Aubret, Q. Martinet, J.A. Palacci, Nature Communications 12 (2021).
date_created: 2021-11-14T23:01:23Z
date_published: 2021-11-04T00:00:00Z
date_updated: 2023-08-14T11:48:37Z
day: '04'
ddc:
- '530'
department:
- _id: JePa
doi: 10.1038/s41467-021-26699-6
external_id:
isi:
- '000714754400010'
pmid:
- '34737315'
file:
- access_level: open_access
checksum: 1c392b12b9b7b615d422d9fabe19cdb9
content_type: application/pdf
creator: cchlebak
date_created: 2021-11-15T13:25:52Z
date_updated: 2021-11-15T13:25:52Z
file_id: '10292'
file_name: 2021_NatComm_Aubret.pdf
file_size: 6282703
relation: main_file
success: 1
file_date_updated: 2021-11-15T13:25:52Z
has_accepted_license: '1'
intvolume: ' 12'
isi: 1
issue: '1'
language:
- iso: eng
month: '11'
oa: 1
oa_version: Published Version
pmid: 1
publication: Nature Communications
publication_identifier:
eissn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Metamachines of pluripotent colloids
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: 12
year: '2021'
...
---
_id: '9054'
abstract:
- lang: eng
text: 'The fundamental and practical importance of particle stabilization has motivated
various characterization methods for studying polymer brushes on particle surfaces.
In this work, we show how one can perform sensitive measurements of neutral polymer
coating on colloidal particles using a commercial zetameter and salt solutions.
By systematically varying the Debye length, we study the mobility of the polymer-coated
particles in an applied electric field and show that the electrophoretic mobility
of polymer-coated particles normalized by the mobility of non-coated particles
is entirely controlled by the polymer brush and independent of the native surface
charge, here controlled with pH, or the surface–ion interaction. Our result is
rationalized with a simple hydrodynamic model, allowing for the estimation of
characteristics of the polymer coating: the brush length L, and the Brinkman length
ξ, determined by its resistance to flows. We demonstrate that the Debye layer
provides a convenient and faithful probe to the characterization of polymer coatings
on particles. Because the method simply relies on a conventional zetameter, it
is widely accessible and offers a practical tool to rapidly probe neutral polymer
brushes, an asset in the development and utilization of polymer-coated colloidal
particles.'
article_processing_charge: No
article_type: original
author:
- first_name: Mena
full_name: Youssef, Mena
last_name: Youssef
- first_name: Alexandre
full_name: Morin, Alexandre
last_name: Morin
- first_name: Antoine
full_name: Aubret, Antoine
last_name: Aubret
- first_name: Stefano
full_name: Sacanna, Stefano
last_name: Sacanna
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Youssef M, Morin A, Aubret A, Sacanna S, Palacci JA. Rapid characterization
of neutral polymer brush with a conventional zetameter and a variable pinch of
salt. Soft Matter. 2020;16(17):4274-4282. doi:10.1039/c9sm01850f
apa: Youssef, M., Morin, A., Aubret, A., Sacanna, S., & Palacci, J. A. (2020).
Rapid characterization of neutral polymer brush with a conventional zetameter
and a variable pinch of salt. Soft Matter. Royal Society of Chemistry .
https://doi.org/10.1039/c9sm01850f
chicago: Youssef, Mena, Alexandre Morin, Antoine Aubret, Stefano Sacanna, and Jérémie
A Palacci. “Rapid Characterization of Neutral Polymer Brush with a Conventional
Zetameter and a Variable Pinch of Salt.” Soft Matter. Royal Society of
Chemistry , 2020. https://doi.org/10.1039/c9sm01850f.
ieee: M. Youssef, A. Morin, A. Aubret, S. Sacanna, and J. A. Palacci, “Rapid characterization
of neutral polymer brush with a conventional zetameter and a variable pinch of
salt,” Soft Matter, vol. 16, no. 17. Royal Society of Chemistry , pp. 4274–4282,
2020.
ista: Youssef M, Morin A, Aubret A, Sacanna S, Palacci JA. 2020. Rapid characterization
of neutral polymer brush with a conventional zetameter and a variable pinch of
salt. Soft Matter. 16(17), 4274–4282.
mla: Youssef, Mena, et al. “Rapid Characterization of Neutral Polymer Brush with
a Conventional Zetameter and a Variable Pinch of Salt.” Soft Matter, vol.
16, no. 17, Royal Society of Chemistry , 2020, pp. 4274–82, doi:10.1039/c9sm01850f.
short: M. Youssef, A. Morin, A. Aubret, S. Sacanna, J.A. Palacci, Soft Matter 16
(2020) 4274–4282.
date_created: 2021-02-01T13:45:11Z
date_published: 2020-05-07T00:00:00Z
date_updated: 2023-02-23T13:47:45Z
day: '07'
doi: 10.1039/c9sm01850f
extern: '1'
external_id:
pmid:
- '32307507'
intvolume: ' 16'
issue: '17'
keyword:
- General Chemistry
- Condensed Matter Physics
language:
- iso: eng
month: '05'
oa_version: None
page: 4274-4282
pmid: 1
publication: Soft Matter
publication_identifier:
eissn:
- 1744-6848
issn:
- 1744-683X
publication_status: published
publisher: 'Royal Society of Chemistry '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Rapid characterization of neutral polymer brush with a conventional zetameter
and a variable pinch of salt
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 16
year: '2020'
...
---
_id: '9059'
abstract:
- lang: eng
text: 'From rock salt to nanoparticle superlattices, complex structure can emerge
from simple building blocks that attract each other through Coulombic forces1-4.
On the micrometre scale, however, colloids in water defy the intuitively simple
idea of forming crystals from oppositely charged partners, instead forming non-equilibrium
structures such as clusters and gels5-7. Although various systems have been engineered
to grow binary crystals8-11, native surface charge in aqueous conditions has not
been used to assemble crystalline materials. Here we form ionic colloidal crystals
in water through an approach that we refer to as polymer-attenuated Coulombic
self-assembly. The key to crystallization is the use of a neutral polymer to keep
particles separated by well defined distances, allowing us to tune the attractive
overlap of electrical double layers, directing particles to disperse, crystallize
or become permanently fixed on demand. The nucleation and growth of macroscopic
single crystals is demonstrated by using the Debye screening length to fine-tune
assembly. Using a variety of colloidal particles and commercial polymers, ionic
colloidal crystals isostructural to caesium chloride, sodium chloride, aluminium
diboride and K4C60 are selected according to particle size ratios. Once fixed
by simply diluting out solution salts, crystals are pulled out of the water for
further manipulation, demonstrating an accurate translation from solution-phase
assembly to dried solid structures. In contrast to other assembly approaches,
in which particles must be carefully engineered to encode binding information12-18,
polymer-attenuated Coulombic self-assembly enables conventional colloids to be
used as model colloidal ions, primed for crystallization. '
article_processing_charge: No
article_type: original
author:
- first_name: Theodore
full_name: Hueckel, Theodore
last_name: Hueckel
- first_name: Glen M.
full_name: Hocky, Glen M.
last_name: Hocky
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
- first_name: Stefano
full_name: Sacanna, Stefano
last_name: Sacanna
citation:
ama: Hueckel T, Hocky GM, Palacci JA, Sacanna S. Ionic solids from common colloids.
Nature. 2020;580(7804):487-490. doi:10.1038/s41586-020-2205-0
apa: Hueckel, T., Hocky, G. M., Palacci, J. A., & Sacanna, S. (2020). Ionic
solids from common colloids. Nature. Springer Nature. https://doi.org/10.1038/s41586-020-2205-0
chicago: Hueckel, Theodore, Glen M. Hocky, Jérémie A Palacci, and Stefano Sacanna.
“Ionic Solids from Common Colloids.” Nature. Springer Nature, 2020. https://doi.org/10.1038/s41586-020-2205-0.
ieee: T. Hueckel, G. M. Hocky, J. A. Palacci, and S. Sacanna, “Ionic solids from
common colloids,” Nature, vol. 580, no. 7804. Springer Nature, pp. 487–490,
2020.
ista: Hueckel T, Hocky GM, Palacci JA, Sacanna S. 2020. Ionic solids from common
colloids. Nature. 580(7804), 487–490.
mla: Hueckel, Theodore, et al. “Ionic Solids from Common Colloids.” Nature,
vol. 580, no. 7804, Springer Nature, 2020, pp. 487–90, doi:10.1038/s41586-020-2205-0.
short: T. Hueckel, G.M. Hocky, J.A. Palacci, S. Sacanna, Nature 580 (2020) 487–490.
date_created: 2021-02-02T13:30:50Z
date_published: 2020-04-23T00:00:00Z
date_updated: 2023-02-23T13:47:55Z
day: '23'
doi: 10.1038/s41586-020-2205-0
extern: '1'
external_id:
pmid:
- '32322078'
intvolume: ' 580'
issue: '7804'
keyword:
- Multidisciplinary
language:
- iso: eng
month: '04'
oa_version: None
page: 487-490
pmid: 1
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Ionic solids from common colloids
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 580
year: '2020'
...
---
_id: '9162'
abstract:
- lang: eng
text: Active navigation relies on effectively extracting information from the surrounding
environment, and often features the tracking of gradients of a relevant signal—such
as the concentration of molecules. Microfluidic networks of closed pathways pose
the challenge of determining the shortest exit pathway, which involves the proper
local decision-making at each bifurcating junction. Here, we focus on the basic
decision faced at a T-junction by a microscopic particle, which orients among
possible paths via its sensing of a diffusible substance's concentration. We study
experimentally the navigation of colloidal particles following concentration gradients
by diffusiophoresis. We treat the situation as a mean first passage time (MFPT)
problem that unveils the important role of a separatrix in the concentration field
to determine the statistics of path taking. Further, we use numerical experiments
to study different strategies, including biomimetic ones such as run and tumble
or Markovian chemotactic migration. The discontinuity in the MFPT at the junction
makes it remarkably difficult for microscopic agents to follow the shortest path,
irrespective of adopted navigation strategy. In contrast, increasing the size
of the sensing agents improves the efficiency of short-path taking by harvesting
information on a larger scale. It inspires the development of a run-and-whirl
dynamics that takes advantage of the mathematical properties of harmonic functions
to emulate particles beyond their own size.
article_number: '104202'
article_processing_charge: No
article_type: original
author:
- first_name: Tanvi
full_name: Gandhi, Tanvi
last_name: Gandhi
- first_name: Jinzi
full_name: Mac Huang, Jinzi
last_name: Mac Huang
- first_name: Antoine
full_name: Aubret, Antoine
last_name: Aubret
- first_name: Yaocheng
full_name: Li, Yaocheng
last_name: Li
- first_name: Sophie
full_name: Ramananarivo, Sophie
last_name: Ramananarivo
- first_name: Massimo
full_name: Vergassola, Massimo
last_name: Vergassola
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Gandhi T, Mac Huang J, Aubret A, et al. Decision-making at a T-junction by
gradient-sensing microscopic agents. Physical Review Fluids. 2020;5(10).
doi:10.1103/physrevfluids.5.104202
apa: Gandhi, T., Mac Huang, J., Aubret, A., Li, Y., Ramananarivo, S., Vergassola,
M., & Palacci, J. A. (2020). Decision-making at a T-junction by gradient-sensing
microscopic agents. Physical Review Fluids. American Physical Society.
https://doi.org/10.1103/physrevfluids.5.104202
chicago: Gandhi, Tanvi, Jinzi Mac Huang, Antoine Aubret, Yaocheng Li, Sophie Ramananarivo,
Massimo Vergassola, and Jérémie A Palacci. “Decision-Making at a T-Junction by
Gradient-Sensing Microscopic Agents.” Physical Review Fluids. American
Physical Society, 2020. https://doi.org/10.1103/physrevfluids.5.104202.
ieee: T. Gandhi et al., “Decision-making at a T-junction by gradient-sensing
microscopic agents,” Physical Review Fluids, vol. 5, no. 10. American Physical
Society, 2020.
ista: Gandhi T, Mac Huang J, Aubret A, Li Y, Ramananarivo S, Vergassola M, Palacci
JA. 2020. Decision-making at a T-junction by gradient-sensing microscopic agents.
Physical Review Fluids. 5(10), 104202.
mla: Gandhi, Tanvi, et al. “Decision-Making at a T-Junction by Gradient-Sensing
Microscopic Agents.” Physical Review Fluids, vol. 5, no. 10, 104202, American
Physical Society, 2020, doi:10.1103/physrevfluids.5.104202.
short: T. Gandhi, J. Mac Huang, A. Aubret, Y. Li, S. Ramananarivo, M. Vergassola,
J.A. Palacci, Physical Review Fluids 5 (2020).
date_created: 2021-02-18T14:07:16Z
date_published: 2020-10-14T00:00:00Z
date_updated: 2023-02-23T13:50:55Z
day: '14'
ddc:
- '530'
doi: 10.1103/physrevfluids.5.104202
extern: '1'
file:
- access_level: open_access
checksum: dfecfadbd79fd760fb4db20d1e667f17
content_type: application/pdf
creator: cziletti
date_created: 2021-02-18T14:12:24Z
date_updated: 2021-02-18T14:12:24Z
file_id: '9163'
file_name: 2020_PhysRevFluids_Gandhi.pdf
file_size: 730504
relation: main_file
success: 1
file_date_updated: 2021-02-18T14:12:24Z
has_accepted_license: '1'
intvolume: ' 5'
issue: '10'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: Physical Review Fluids
publication_identifier:
issn:
- 2469-990X
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Decision-making at a T-junction by gradient-sensing microscopic agents
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: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 5
year: '2020'
...
---
_id: '9164'
article_number: '060201'
article_processing_charge: No
article_type: letter_note
author:
- first_name: Thomas
full_name: Speck, Thomas
last_name: Speck
- first_name: Julien
full_name: Tailleur, Julien
last_name: Tailleur
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Speck T, Tailleur J, Palacci JA. Focus on active colloids and nanoparticles.
New Journal of Physics. 2020;22(6). doi:10.1088/1367-2630/ab90d9
apa: Speck, T., Tailleur, J., & Palacci, J. A. (2020). Focus on active colloids
and nanoparticles. New Journal of Physics. IOP Publishing. https://doi.org/10.1088/1367-2630/ab90d9
chicago: Speck, Thomas, Julien Tailleur, and Jérémie A Palacci. “Focus on Active
Colloids and Nanoparticles.” New Journal of Physics. IOP Publishing, 2020.
https://doi.org/10.1088/1367-2630/ab90d9.
ieee: T. Speck, J. Tailleur, and J. A. Palacci, “Focus on active colloids and nanoparticles,”
New Journal of Physics, vol. 22, no. 6. IOP Publishing, 2020.
ista: Speck T, Tailleur J, Palacci JA. 2020. Focus on active colloids and nanoparticles.
New Journal of Physics. 22(6), 060201.
mla: Speck, Thomas, et al. “Focus on Active Colloids and Nanoparticles.” New
Journal of Physics, vol. 22, no. 6, 060201, IOP Publishing, 2020, doi:10.1088/1367-2630/ab90d9.
short: T. Speck, J. Tailleur, J.A. Palacci, New Journal of Physics 22 (2020).
date_created: 2021-02-18T14:17:32Z
date_published: 2020-06-01T00:00:00Z
date_updated: 2021-02-18T14:57:39Z
day: '01'
ddc:
- '530'
doi: 10.1088/1367-2630/ab90d9
extern: '1'
file:
- access_level: open_access
checksum: 02759f3ab228c1a061e747155a20f851
content_type: application/pdf
creator: cziletti
date_created: 2021-02-18T14:53:33Z
date_updated: 2021-02-18T14:53:33Z
file_id: '9169'
file_name: 2020_NewJournPhys_Speck.pdf
file_size: 953338
relation: main_file
success: 1
file_date_updated: 2021-02-18T14:53:33Z
has_accepted_license: '1'
intvolume: ' 22'
issue: '6'
keyword:
- General Physics and Astronomy
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
publication: New Journal of Physics
publication_identifier:
issn:
- 1367-2630
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Focus on active colloids and nanoparticles
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: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 22
year: '2020'
...
---
_id: '9060'
abstract:
- lang: eng
text: Molecular motors are essential to the living, generating fluctuations that
boost transport and assist assembly. Active colloids, that consume energy to move,
hold similar potential for man-made materials controlled by forces generated from
within. Yet, their use as a powerhouse in materials science lacks. Here we show
a massive acceleration of the annealing of a monolayer of passive beads by moderate
addition of self-propelled microparticles. We rationalize our observations with
a model of collisions that drive active fluctuations and activate the annealing.
The experiment is quantitatively compared with Brownian dynamic simulations that
further unveil a dynamical transition in the mechanism of annealing. Active dopants
travel uniformly in the system or co-localize at the grain boundaries as a result
of the persistence of their motion. Our findings uncover the potential of internal
activity to control materials and lay the groundwork for the rise of materials
science beyond equilibrium.
article_number: '3380'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Sophie
full_name: Ramananarivo, Sophie
last_name: Ramananarivo
- first_name: Etienne
full_name: Ducrot, Etienne
last_name: Ducrot
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Ramananarivo S, Ducrot E, Palacci JA. Activity-controlled annealing of colloidal
monolayers. Nature Communications. 2019;10(1). doi:10.1038/s41467-019-11362-y
apa: Ramananarivo, S., Ducrot, E., & Palacci, J. A. (2019). Activity-controlled
annealing of colloidal monolayers. Nature Communications. Springer Nature.
https://doi.org/10.1038/s41467-019-11362-y
chicago: Ramananarivo, Sophie, Etienne Ducrot, and Jérémie A Palacci. “Activity-Controlled
Annealing of Colloidal Monolayers.” Nature Communications. Springer Nature,
2019. https://doi.org/10.1038/s41467-019-11362-y.
ieee: S. Ramananarivo, E. Ducrot, and J. A. Palacci, “Activity-controlled annealing
of colloidal monolayers,” Nature Communications, vol. 10, no. 1. Springer
Nature, 2019.
ista: Ramananarivo S, Ducrot E, Palacci JA. 2019. Activity-controlled annealing
of colloidal monolayers. Nature Communications. 10(1), 3380.
mla: Ramananarivo, Sophie, et al. “Activity-Controlled Annealing of Colloidal Monolayers.”
Nature Communications, vol. 10, no. 1, 3380, Springer Nature, 2019, doi:10.1038/s41467-019-11362-y.
short: S. Ramananarivo, E. Ducrot, J.A. Palacci, Nature Communications 10 (2019).
date_created: 2021-02-02T13:43:36Z
date_published: 2019-07-29T00:00:00Z
date_updated: 2023-02-23T13:47:59Z
day: '29'
ddc:
- '530'
doi: 10.1038/s41467-019-11362-y
extern: '1'
external_id:
arxiv:
- '1909.07382'
pmid:
- '31358762'
file:
- access_level: open_access
checksum: 70c6e5d6fbea0932b0669505ab6633ec
content_type: application/pdf
creator: cziletti
date_created: 2021-02-02T13:47:21Z
date_updated: 2021-02-02T13:47:21Z
file_id: '9061'
file_name: 2019_NatureComm_Ramananarivo.pdf
file_size: 2820337
relation: main_file
success: 1
file_date_updated: 2021-02-02T13:47:21Z
has_accepted_license: '1'
intvolume: ' 10'
issue: '1'
keyword:
- General Biochemistry
- Genetics and Molecular Biology
- General Physics and Astronomy
- General Chemistry
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
pmid: 1
publication: Nature Communications
publication_identifier:
issn:
- 2041-1723
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Activity-controlled annealing of colloidal monolayers
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: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 10
year: '2019'
...
---
_id: '9053'
abstract:
- lang: eng
text: The development of strategies to assemble microscopic machines from dissipative
building blocks are essential on the route to novel active materials. We recently
demonstrated the hierarchical self-assembly of phoretic microswimmers into self-spinning
microgears and their synchronization by diffusiophoretic interactions [Aubret
et al., Nat. Phys., 2018]. In this paper, we adopt a pedagogical approach and
expose our strategy to control self-assembly and build machines using phoretic
phenomena. We notably introduce Highly Inclined Laminated Optical sheets microscopy
(HILO) to image and characterize anisotropic and dynamic diffusiophoretic interactions,
which cannot be performed by conventional fluorescence microscopy. The dynamics
of a (haematite) photocatalytic material immersed in (hydrogen peroxide) fuel
under various illumination patterns is first described and quantitatively rationalized
by a model of diffusiophoresis, the migration of a colloidal particle in a concentration
gradient. It is further exploited to design phototactic microswimmers that direct
towards the high intensity of light, as a result of the reorientation of the haematite
in a light gradient. We finally show the assembly of self-spinning microgears
from colloidal microswimmers and carefully characterize the interactions using
HILO techniques. The results are compared with analytical and numerical predictions
and agree quantitatively, stressing the important role played by concentration
gradients induced by chemical activity to control and design interactions. Because
the approach described hereby is generic, this works paves the way for the rational
design of machines by controlling phoretic phenomena.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Antoine
full_name: Aubret, Antoine
last_name: Aubret
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Aubret A, Palacci JA. Diffusiophoretic design of self-spinning microgears from
colloidal microswimmers. Soft Matter. 2018;14(47):9577-9588. doi:10.1039/c8sm01760c
apa: Aubret, A., & Palacci, J. A. (2018). Diffusiophoretic design of self-spinning
microgears from colloidal microswimmers. Soft Matter. Royal Society of
Chemistry . https://doi.org/10.1039/c8sm01760c
chicago: Aubret, Antoine, and Jérémie A Palacci. “Diffusiophoretic Design of Self-Spinning
Microgears from Colloidal Microswimmers.” Soft Matter. Royal Society of
Chemistry , 2018. https://doi.org/10.1039/c8sm01760c.
ieee: A. Aubret and J. A. Palacci, “Diffusiophoretic design of self-spinning microgears
from colloidal microswimmers,” Soft Matter, vol. 14, no. 47. Royal Society
of Chemistry , pp. 9577–9588, 2018.
ista: Aubret A, Palacci JA. 2018. Diffusiophoretic design of self-spinning microgears
from colloidal microswimmers. Soft Matter. 14(47), 9577–9588.
mla: Aubret, Antoine, and Jérémie A. Palacci. “Diffusiophoretic Design of Self-Spinning
Microgears from Colloidal Microswimmers.” Soft Matter, vol. 14, no. 47,
Royal Society of Chemistry , 2018, pp. 9577–88, doi:10.1039/c8sm01760c.
short: A. Aubret, J.A. Palacci, Soft Matter 14 (2018) 9577–9588.
date_created: 2021-02-01T13:44:41Z
date_published: 2018-12-21T00:00:00Z
date_updated: 2023-02-23T13:47:43Z
day: '21'
doi: 10.1039/c8sm01760c
extern: '1'
external_id:
arxiv:
- '1909.11121'
pmid:
- '30456407'
intvolume: ' 14'
issue: '47'
keyword:
- General Chemistry
- Condensed Matter Physics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1909.11121
month: '12'
oa: 1
oa_version: Preprint
page: 9577-9588
pmid: 1
publication: Soft Matter
publication_identifier:
eissn:
- 1744-6848
issn:
- 1744-683X
publication_status: published
publisher: 'Royal Society of Chemistry '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Diffusiophoretic design of self-spinning microgears from colloidal microswimmers
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 14
year: '2018'
...
---
_id: '9062'
abstract:
- lang: eng
text: 'Self-assembly is the autonomous organization of components into patterns
or structures: an essential ingredient of biology and a desired route to complex
organization1. At equilibrium, the structure is encoded through specific interactions2,3,4,5,6,7,8,
at an unfavourable entropic cost for the system. An alternative approach, widely
used by nature, uses energy input to bypass the entropy bottleneck and develop
features otherwise impossible at equilibrium9. Dissipative building blocks that
inject energy locally were made available by recent advances in colloidal science10,11
but have not been used to control self-assembly. Here we show the targeted formation
of self-powered microgears from active particles and their autonomous synchronization
into dynamical superstructures. We use a photoactive component that consumes fuel,
haematite, to devise phototactic microswimmers that form self-spinning microgears
following spatiotemporal light patterns. The gears are coupled via their chemical
clouds by diffusiophoresis12 and constitute the elementary bricks of synchronized
superstructures, which autonomously regulate their dynamics. The results are quantitatively
rationalized on the basis of a stochastic description of diffusio-phoretic oscillators
dynamically coupled by chemical gradients. Our findings harness non-equilibrium
phoretic phenomena to program interactions and direct self-assembly with fidelity
and specificity. It lays the groundwork for the autonomous construction of dynamical
architectures and functional micro-machinery.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Antoine
full_name: Aubret, Antoine
last_name: Aubret
- first_name: Mena
full_name: Youssef, Mena
last_name: Youssef
- first_name: Stefano
full_name: Sacanna, Stefano
last_name: Sacanna
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: Aubret A, Youssef M, Sacanna S, Palacci JA. Targeted assembly and synchronization
of self-spinning microgears. Nature Physics. 2018;14(11):1114-1118. doi:10.1038/s41567-018-0227-4
apa: Aubret, A., Youssef, M., Sacanna, S., & Palacci, J. A. (2018). Targeted
assembly and synchronization of self-spinning microgears. Nature Physics.
Springer Nature. https://doi.org/10.1038/s41567-018-0227-4
chicago: Aubret, Antoine, Mena Youssef, Stefano Sacanna, and Jérémie A Palacci.
“Targeted Assembly and Synchronization of Self-Spinning Microgears.” Nature
Physics. Springer Nature, 2018. https://doi.org/10.1038/s41567-018-0227-4.
ieee: A. Aubret, M. Youssef, S. Sacanna, and J. A. Palacci, “Targeted assembly and
synchronization of self-spinning microgears,” Nature Physics, vol. 14,
no. 11. Springer Nature, pp. 1114–1118, 2018.
ista: Aubret A, Youssef M, Sacanna S, Palacci JA. 2018. Targeted assembly and synchronization
of self-spinning microgears. Nature Physics. 14(11), 1114–1118.
mla: Aubret, Antoine, et al. “Targeted Assembly and Synchronization of Self-Spinning
Microgears.” Nature Physics, vol. 14, no. 11, Springer Nature, 2018, pp.
1114–18, doi:10.1038/s41567-018-0227-4.
short: A. Aubret, M. Youssef, S. Sacanna, J.A. Palacci, Nature Physics 14 (2018)
1114–1118.
date_created: 2021-02-02T13:52:49Z
date_published: 2018-11-01T00:00:00Z
date_updated: 2023-02-23T13:48:02Z
day: '01'
doi: 10.1038/s41567-018-0227-4
extern: '1'
external_id:
arxiv:
- '1810.01033'
intvolume: ' 14'
issue: '11'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1810.01033
month: '11'
oa: 1
oa_version: Preprint
page: 1114-1118
publication: Nature Physics
publication_identifier:
eissn:
- 1745-2481
issn:
- 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Targeted assembly and synchronization of self-spinning microgears
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 14
year: '2018'
...
---
_id: '9165'
abstract:
- lang: eng
text: Advances in colloidal synthesis allow for the design of particles with controlled
patches. This article reviews routes towards colloidal locomotion, where energy
is consumed and converted into motion, and its implementation with active patchy
particles. A special emphasis is given to phoretic swimmers, where the self-propulsion
originates from an interfacial phenomenon, raising experimental challenges and
opening up opportunities for particles with controlled anisotropic surface chemistry
and novel behaviors.
article_processing_charge: No
article_type: original
author:
- first_name: A.
full_name: Aubret, A.
last_name: Aubret
- first_name: S.
full_name: Ramananarivo, S.
last_name: Ramananarivo
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
citation:
ama: 'Aubret A, Ramananarivo S, Palacci JA. Eppur si muove, and yet it moves: Patchy
(phoretic) swimmers. Current Opinion in Colloid & Interface Science.
2017;30:81-89. doi:10.1016/j.cocis.2017.05.007'
apa: 'Aubret, A., Ramananarivo, S., & Palacci, J. A. (2017). Eppur si muove,
and yet it moves: Patchy (phoretic) swimmers. Current Opinion in Colloid &
Interface Science. Elsevier. https://doi.org/10.1016/j.cocis.2017.05.007'
chicago: 'Aubret, A., S. Ramananarivo, and Jérémie A Palacci. “Eppur Si Muove, and
yet It Moves: Patchy (Phoretic) Swimmers.” Current Opinion in Colloid &
Interface Science. Elsevier, 2017. https://doi.org/10.1016/j.cocis.2017.05.007.'
ieee: 'A. Aubret, S. Ramananarivo, and J. A. Palacci, “Eppur si muove, and yet it
moves: Patchy (phoretic) swimmers,” Current Opinion in Colloid & Interface
Science, vol. 30. Elsevier, pp. 81–89, 2017.'
ista: 'Aubret A, Ramananarivo S, Palacci JA. 2017. Eppur si muove, and yet it moves:
Patchy (phoretic) swimmers. Current Opinion in Colloid & Interface Science.
30, 81–89.'
mla: 'Aubret, A., et al. “Eppur Si Muove, and yet It Moves: Patchy (Phoretic) Swimmers.”
Current Opinion in Colloid & Interface Science, vol. 30, Elsevier,
2017, pp. 81–89, doi:10.1016/j.cocis.2017.05.007.'
short: A. Aubret, S. Ramananarivo, J.A. Palacci, Current Opinion in Colloid &
Interface Science 30 (2017) 81–89.
date_created: 2021-02-18T14:29:42Z
date_published: 2017-07-01T00:00:00Z
date_updated: 2021-02-22T09:32:11Z
day: '01'
doi: 10.1016/j.cocis.2017.05.007
extern: '1'
intvolume: ' 30'
language:
- iso: eng
month: '07'
oa_version: None
page: 81-89
publication: Current Opinion in Colloid & Interface Science
publication_identifier:
issn:
- 1359-0294
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Eppur si muove, and yet it moves: Patchy (phoretic) swimmers'
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 30
year: '2017'
...
---
_id: '9051'
abstract:
- lang: eng
text: 'Biological systems often involve the self-assembly of basic components into
complex and functioning structures. Artificial systems that mimic such processes
can provide a well-controlled setting to explore the principles involved and also
synthesize useful micromachines. Our experiments show that immotile, but active,
components self-assemble into two types of structure that exhibit the fundamental
forms of motility: translation and rotation. Specifically, micron-scale metallic
rods are designed to induce extensile surface flows in the presence of a chemical
fuel; these rods interact with each other and pair up to form either a swimmer
or a rotor. Such pairs can transition reversibly between these two configurations,
leading to kinetics reminiscent of bacterial run-and-tumble motion.'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Megan S.
full_name: Davies Wykes, Megan S.
last_name: Davies Wykes
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
- first_name: Takuji
full_name: Adachi, Takuji
last_name: Adachi
- first_name: Leif
full_name: Ristroph, Leif
last_name: Ristroph
- first_name: Xiao
full_name: Zhong, Xiao
last_name: Zhong
- first_name: Michael D.
full_name: Ward, Michael D.
last_name: Ward
- first_name: Jun
full_name: Zhang, Jun
last_name: Zhang
- first_name: Michael J.
full_name: Shelley, Michael J.
last_name: Shelley
citation:
ama: Davies Wykes MS, Palacci JA, Adachi T, et al. Dynamic self-assembly of microscale
rotors and swimmers. Soft Matter. 2016;12(20):4584-4589. doi:10.1039/c5sm03127c
apa: Davies Wykes, M. S., Palacci, J. A., Adachi, T., Ristroph, L., Zhong, X., Ward,
M. D., … Shelley, M. J. (2016). Dynamic self-assembly of microscale rotors and
swimmers. Soft Matter. Royal Society of Chemistry. https://doi.org/10.1039/c5sm03127c
chicago: Davies Wykes, Megan S., Jérémie A Palacci, Takuji Adachi, Leif Ristroph,
Xiao Zhong, Michael D. Ward, Jun Zhang, and Michael J. Shelley. “Dynamic Self-Assembly
of Microscale Rotors and Swimmers.” Soft Matter. Royal Society of Chemistry,
2016. https://doi.org/10.1039/c5sm03127c.
ieee: M. S. Davies Wykes et al., “Dynamic self-assembly of microscale rotors
and swimmers,” Soft Matter, vol. 12, no. 20. Royal Society of Chemistry,
pp. 4584–4589, 2016.
ista: Davies Wykes MS, Palacci JA, Adachi T, Ristroph L, Zhong X, Ward MD, Zhang
J, Shelley MJ. 2016. Dynamic self-assembly of microscale rotors and swimmers.
Soft Matter. 12(20), 4584–4589.
mla: Davies Wykes, Megan S., et al. “Dynamic Self-Assembly of Microscale Rotors
and Swimmers.” Soft Matter, vol. 12, no. 20, Royal Society of Chemistry,
2016, pp. 4584–89, doi:10.1039/c5sm03127c.
short: M.S. Davies Wykes, J.A. Palacci, T. Adachi, L. Ristroph, X. Zhong, M.D. Ward,
J. Zhang, M.J. Shelley, Soft Matter 12 (2016) 4584–4589.
date_created: 2021-02-01T13:44:00Z
date_published: 2016-05-28T00:00:00Z
date_updated: 2023-02-23T13:47:38Z
day: '28'
doi: 10.1039/c5sm03127c
extern: '1'
external_id:
arxiv:
- '1509.06330'
pmid:
- '27121100'
intvolume: ' 12'
issue: '20'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1509.06330
month: '05'
oa: 1
oa_version: Preprint
page: 4584-4589
pmid: 1
publication: Soft Matter
publication_identifier:
eissn:
- 1744-6848
issn:
- 1744-683X
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dynamic self-assembly of microscale rotors and swimmers
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 12
year: '2016'
...
---
_id: '9052'
abstract:
- lang: eng
text: We describe colloidal Janus particles with metallic and dielectric faces that
swim vigorously when illuminated by defocused optical tweezers without consuming
any chemical fuel. Rather than wandering randomly, these optically-activated colloidal
swimmers circulate back and forth through the beam of light, tracing out sinuous
rosette patterns. We propose a model for this mode of light-activated transport
that accounts for the observed behavior through a combination of self-thermophoresis
and optically-induced torque. In the deterministic limit, this model yields trajectories
that resemble rosette curves known as hypotrochoids.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Henrique
full_name: Moyses, Henrique
last_name: Moyses
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
- first_name: Stefano
full_name: Sacanna, Stefano
last_name: Sacanna
- first_name: David G.
full_name: Grier, David G.
last_name: Grier
citation:
ama: Moyses H, Palacci JA, Sacanna S, Grier DG. Trochoidal trajectories of self-propelled
Janus particles in a diverging laser beam. Soft Matter. 2016;12(30):6357-6364.
doi:10.1039/c6sm01163b
apa: Moyses, H., Palacci, J. A., Sacanna, S., & Grier, D. G. (2016). Trochoidal
trajectories of self-propelled Janus particles in a diverging laser beam. Soft
Matter. Royal Society of Chemistry . https://doi.org/10.1039/c6sm01163b
chicago: Moyses, Henrique, Jérémie A Palacci, Stefano Sacanna, and David G. Grier.
“Trochoidal Trajectories of Self-Propelled Janus Particles in a Diverging Laser
Beam.” Soft Matter. Royal Society of Chemistry , 2016. https://doi.org/10.1039/c6sm01163b.
ieee: H. Moyses, J. A. Palacci, S. Sacanna, and D. G. Grier, “Trochoidal trajectories
of self-propelled Janus particles in a diverging laser beam,” Soft Matter,
vol. 12, no. 30. Royal Society of Chemistry , pp. 6357–6364, 2016.
ista: Moyses H, Palacci JA, Sacanna S, Grier DG. 2016. Trochoidal trajectories of
self-propelled Janus particles in a diverging laser beam. Soft Matter. 12(30),
6357–6364.
mla: Moyses, Henrique, et al. “Trochoidal Trajectories of Self-Propelled Janus Particles
in a Diverging Laser Beam.” Soft Matter, vol. 12, no. 30, Royal Society
of Chemistry , 2016, pp. 6357–64, doi:10.1039/c6sm01163b.
short: H. Moyses, J.A. Palacci, S. Sacanna, D.G. Grier, Soft Matter 12 (2016) 6357–6364.
date_created: 2021-02-01T13:44:15Z
date_published: 2016-08-14T00:00:00Z
date_updated: 2023-02-23T13:47:40Z
day: '14'
doi: 10.1039/c6sm01163b
extern: '1'
external_id:
arxiv:
- '1609.01497'
pmid:
- '27338294'
intvolume: ' 12'
issue: '30'
keyword:
- General Chemistry
- Condensed Matter Physics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1609.01497
month: '08'
oa: 1
oa_version: Preprint
page: 6357-6364
pmid: 1
publication: Soft Matter
publication_identifier:
eissn:
- 1744-6848
issn:
- 1744-683X
publication_status: published
publisher: 'Royal Society of Chemistry '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Trochoidal trajectories of self-propelled Janus particles in a diverging laser
beam
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 12
year: '2016'
...
---
_id: '9057'
abstract:
- lang: eng
text: Motility is a basic feature of living microorganisms, and how it works is
often determined by environmental cues. Recent efforts have focused on developing
artificial systems that can mimic microorganisms, in particular their self-propulsion.
We report on the design and characterization of synthetic self-propelled particles
that migrate upstream, known as positive rheotaxis. This phenomenon results from
a purely physical mechanism involving the interplay between the polarity of the
particles and their alignment by a viscous torque. We show quantitative agreement
between experimental data and a simple model of an overdamped Brownian pendulum.
The model notably predicts the existence of a stagnation point in a diverging
flow. We take advantage of this property to demonstrate that our active particles
can sense and predictably organize in an imposed flow. Our colloidal system represents
an important step toward the realization of biomimetic microsystems with the ability
to sense and respond to environmental changes.
article_number: e1400214
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
- first_name: Stefano
full_name: Sacanna, Stefano
last_name: Sacanna
- first_name: Anaïs
full_name: Abramian, Anaïs
last_name: Abramian
- first_name: Jérémie
full_name: Barral, Jérémie
last_name: Barral
- first_name: Kasey
full_name: Hanson, Kasey
last_name: Hanson
- first_name: Alexander Y.
full_name: Grosberg, Alexander Y.
last_name: Grosberg
- first_name: David J.
full_name: Pine, David J.
last_name: Pine
- first_name: Paul M.
full_name: Chaikin, Paul M.
last_name: Chaikin
citation:
ama: Palacci JA, Sacanna S, Abramian A, et al. Artificial rheotaxis. Science
Advances. 2015;1(4). doi:10.1126/sciadv.1400214
apa: Palacci, J. A., Sacanna, S., Abramian, A., Barral, J., Hanson, K., Grosberg,
A. Y., … Chaikin, P. M. (2015). Artificial rheotaxis. Science Advances.
American Association for the Advancement of Science . https://doi.org/10.1126/sciadv.1400214
chicago: Palacci, Jérémie A, Stefano Sacanna, Anaïs Abramian, Jérémie Barral, Kasey
Hanson, Alexander Y. Grosberg, David J. Pine, and Paul M. Chaikin. “Artificial
Rheotaxis.” Science Advances. American Association for the Advancement
of Science , 2015. https://doi.org/10.1126/sciadv.1400214.
ieee: J. A. Palacci et al., “Artificial rheotaxis,” Science Advances,
vol. 1, no. 4. American Association for the Advancement of Science , 2015.
ista: Palacci JA, Sacanna S, Abramian A, Barral J, Hanson K, Grosberg AY, Pine DJ,
Chaikin PM. 2015. Artificial rheotaxis. Science Advances. 1(4), e1400214.
mla: Palacci, Jérémie A., et al. “Artificial Rheotaxis.” Science Advances,
vol. 1, no. 4, e1400214, American Association for the Advancement of Science ,
2015, doi:10.1126/sciadv.1400214.
short: J.A. Palacci, S. Sacanna, A. Abramian, J. Barral, K. Hanson, A.Y. Grosberg,
D.J. Pine, P.M. Chaikin, Science Advances 1 (2015).
date_created: 2021-02-02T13:15:02Z
date_published: 2015-05-01T00:00:00Z
date_updated: 2023-02-23T13:47:52Z
day: '01'
ddc:
- '530'
doi: 10.1126/sciadv.1400214
extern: '1'
external_id:
arxiv:
- '1505.05111'
pmid:
- '26601175'
file:
- access_level: open_access
checksum: b97d62433581875c1b85210c5f6ae370
content_type: application/pdf
creator: cziletti
date_created: 2021-02-02T13:22:19Z
date_updated: 2021-02-02T13:22:19Z
file_id: '9058'
file_name: 2015_ScienceAdvances_Palacci.pdf
file_size: 2416780
relation: main_file
success: 1
file_date_updated: 2021-02-02T13:22:19Z
has_accepted_license: '1'
intvolume: ' 1'
issue: '4'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc/4.0/
month: '05'
oa: 1
oa_version: Published Version
pmid: 1
publication: Science Advances
publication_identifier:
issn:
- 2375-2548
publication_status: published
publisher: 'American Association for the Advancement of Science '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Artificial rheotaxis
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
short: CC BY-NC (4.0)
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 1
year: '2015'
...
---
_id: '9050'
abstract:
- lang: eng
text: Self-propelled particles can exhibit surprising non-equilibrium behaviors,
and how they interact with obstacles or boundaries remains an important open problem.
Here we show that chemically propelled micro-rods can be captured, with little
change in their speed, into close orbits around solid spheres resting on or near
a horizontal plane. We show that this interaction between sphere and particle
is short-range, occurring even for spheres smaller than the particle length, and
for a variety of sphere materials. We consider a simple model, based on lubrication
theory, of a force- and torque-free swimmer driven by a surface slip (the phoretic
propulsion mechanism) and moving near a solid surface. The model demonstrates
capture, or movement towards the surface, and yields speeds independent of distance.
This study reveals the crucial aspects of activity–driven interactions of self-propelled
particles with passive objects, and brings into question the use of colloidal
tracers as probes of active matter.
article_number: '1784'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Daisuke
full_name: Takagi, Daisuke
last_name: Takagi
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
- first_name: Adam B.
full_name: Braunschweig, Adam B.
last_name: Braunschweig
- first_name: Michael J.
full_name: Shelley, Michael J.
last_name: Shelley
- first_name: Jun
full_name: Zhang, Jun
last_name: Zhang
citation:
ama: Takagi D, Palacci JA, Braunschweig AB, Shelley MJ, Zhang J. Hydrodynamic capture
of microswimmers into sphere-bound orbits. Soft Matter. 2014;10(11). doi:10.1039/c3sm52815d
apa: Takagi, D., Palacci, J. A., Braunschweig, A. B., Shelley, M. J., & Zhang,
J. (2014). Hydrodynamic capture of microswimmers into sphere-bound orbits. Soft
Matter. Royal Society of Chemistry . https://doi.org/10.1039/c3sm52815d
chicago: Takagi, Daisuke, Jérémie A Palacci, Adam B. Braunschweig, Michael J. Shelley,
and Jun Zhang. “Hydrodynamic Capture of Microswimmers into Sphere-Bound Orbits.”
Soft Matter. Royal Society of Chemistry , 2014. https://doi.org/10.1039/c3sm52815d.
ieee: D. Takagi, J. A. Palacci, A. B. Braunschweig, M. J. Shelley, and J. Zhang,
“Hydrodynamic capture of microswimmers into sphere-bound orbits,” Soft Matter,
vol. 10, no. 11. Royal Society of Chemistry , 2014.
ista: Takagi D, Palacci JA, Braunschweig AB, Shelley MJ, Zhang J. 2014. Hydrodynamic
capture of microswimmers into sphere-bound orbits. Soft Matter. 10(11), 1784.
mla: Takagi, Daisuke, et al. “Hydrodynamic Capture of Microswimmers into Sphere-Bound
Orbits.” Soft Matter, vol. 10, no. 11, 1784, Royal Society of Chemistry
, 2014, doi:10.1039/c3sm52815d.
short: D. Takagi, J.A. Palacci, A.B. Braunschweig, M.J. Shelley, J. Zhang, Soft
Matter 10 (2014).
date_created: 2021-02-01T13:43:31Z
date_published: 2014-03-21T00:00:00Z
date_updated: 2023-02-23T13:47:35Z
day: '21'
doi: 10.1039/c3sm52815d
extern: '1'
external_id:
arxiv:
- '1309.5662'
pmid:
- '24800268'
intvolume: ' 10'
issue: '11'
keyword:
- General Chemistry
- Condensed Matter Physics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1309.5662
month: '03'
oa: 1
oa_version: Preprint
pmid: 1
publication: Soft Matter
publication_identifier:
eissn:
- 1744-6848
issn:
- 1744-683X
publication_status: published
publisher: 'Royal Society of Chemistry '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Hydrodynamic capture of microswimmers into sphere-bound orbits
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 10
year: '2014'
...
---
_id: '9166'
abstract:
- lang: eng
text: Light-activated self-propelled colloids are synthesized and their active motion
is studied using optical microscopy. We propose a versatile route using different
photoactive materials, and demonstrate a multiwavelength activation and propulsion.
Thanks to the photoelectrochemical properties of two semiconductor materials (α-Fe2O3
and TiO2), a light with an energy higher than the bandgap triggers the reaction
of decomposition of hydrogen peroxide and produces a chemical cloud around the
particle. It induces a phoretic attraction with neighbouring colloids as well
as an osmotic self-propulsion of the particle on the substrate. We use these mechanisms
to form colloidal cargos as well as self-propelled particles where the light-activated
component is embedded into a dielectric sphere. The particles are self-propelled
along a direction otherwise randomized by thermal fluctuations, and exhibit a
persistent random walk. For sufficient surface density, the particles spontaneously
form ‘living crystals’ which are mobile, break apart and reform. Steering the
particle with an external magnetic field, we show that the formation of the dense
phase results from the collisions heads-on of the particles. This effect is intrinsically
non-equilibrium and a novel principle of organization for systems without detailed
balance. Engineering families of particles self-propelled by different wavelength
demonstrate a good understanding of both the physics and the chemistry behind
the system and points to a general route for designing new families of self-propelled
particles.
article_number: '20130372'
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
- first_name: S.
full_name: Sacanna, S.
last_name: Sacanna
- first_name: S.-H.
full_name: Kim, S.-H.
last_name: Kim
- first_name: G.-R.
full_name: Yi, G.-R.
last_name: Yi
- first_name: D. J.
full_name: Pine, D. J.
last_name: Pine
- first_name: P. M.
full_name: Chaikin, P. M.
last_name: Chaikin
citation:
ama: 'Palacci JA, Sacanna S, Kim S-H, Yi G-R, Pine DJ, Chaikin PM. Light-activated
self-propelled colloids. Philosophical Transactions of the Royal Society A:
Mathematical, Physical and Engineering Sciences. 2014;372(2029). doi:10.1098/rsta.2013.0372'
apa: 'Palacci, J. A., Sacanna, S., Kim, S.-H., Yi, G.-R., Pine, D. J., & Chaikin,
P. M. (2014). Light-activated self-propelled colloids. Philosophical Transactions
of the Royal Society A: Mathematical, Physical and Engineering Sciences. The
Royal Society. https://doi.org/10.1098/rsta.2013.0372'
chicago: 'Palacci, Jérémie A, S. Sacanna, S.-H. Kim, G.-R. Yi, D. J. Pine, and P.
M. Chaikin. “Light-Activated Self-Propelled Colloids.” Philosophical Transactions
of the Royal Society A: Mathematical, Physical and Engineering Sciences. The
Royal Society, 2014. https://doi.org/10.1098/rsta.2013.0372.'
ieee: 'J. A. Palacci, S. Sacanna, S.-H. Kim, G.-R. Yi, D. J. Pine, and P. M. Chaikin,
“Light-activated self-propelled colloids,” Philosophical Transactions of the
Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 372,
no. 2029. The Royal Society, 2014.'
ista: 'Palacci JA, Sacanna S, Kim S-H, Yi G-R, Pine DJ, Chaikin PM. 2014. Light-activated
self-propelled colloids. Philosophical Transactions of the Royal Society A: Mathematical,
Physical and Engineering Sciences. 372(2029), 20130372.'
mla: 'Palacci, Jérémie A., et al. “Light-Activated Self-Propelled Colloids.” Philosophical
Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences,
vol. 372, no. 2029, 20130372, The Royal Society, 2014, doi:10.1098/rsta.2013.0372.'
short: 'J.A. Palacci, S. Sacanna, S.-H. Kim, G.-R. Yi, D.J. Pine, P.M. Chaikin,
Philosophical Transactions of the Royal Society A: Mathematical, Physical and
Engineering Sciences 372 (2014).'
date_created: 2021-02-18T14:31:11Z
date_published: 2014-11-28T00:00:00Z
date_updated: 2021-02-22T10:44:16Z
day: '28'
doi: 10.1098/rsta.2013.0372
extern: '1'
external_id:
arxiv:
- '1410.7278'
pmid:
- '25332383'
intvolume: ' 372'
issue: '2029'
keyword:
- General Engineering
- General Physics and Astronomy
- General Mathematics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1098/rsta.2013.0372
month: '11'
oa: 1
oa_version: Published Version
pmid: 1
publication: 'Philosophical Transactions of the Royal Society A: Mathematical, Physical
and Engineering Sciences'
publication_identifier:
eissn:
- 1471-2962
issn:
- 1364-503X
publication_status: published
publisher: The Royal Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Light-activated self-propelled colloids
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 372
year: '2014'
...
---
_id: '9055'
abstract:
- lang: eng
text: Spontaneous formation of colonies of bacteria or flocks of birds are examples
of self-organization in active living matter. Here, we demonstrate a form of self-organization
from nonequilibrium driving forces in a suspension of synthetic photoactivated
colloidal particles. They lead to two-dimensional "living crystals," which form,
break, explode, and re-form elsewhere. The dynamic assembly results from a competition
between self-propulsion of particles and an attractive interaction induced respectively
by osmotic and phoretic effects and activated by light. We measured a transition
from normal to giant-number fluctuations. Our experiments are quantitatively described
by simple numerical simulations. We show that the existence of the living crystals
is intrinsically related to the out-of-equilibrium collisions of the self-propelled
particles.
article_processing_charge: No
article_type: original
author:
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
- first_name: S.
full_name: Sacanna, S.
last_name: Sacanna
- first_name: A. P.
full_name: Steinberg, A. P.
last_name: Steinberg
- first_name: D. J.
full_name: Pine, D. J.
last_name: Pine
- first_name: P. M.
full_name: Chaikin, P. M.
last_name: Chaikin
citation:
ama: Palacci JA, Sacanna S, Steinberg AP, Pine DJ, Chaikin PM. Living crystals of
light-activated colloidal surfers. Science. 2013;339(6122):936-940. doi:10.1126/science.1230020
apa: Palacci, J. A., Sacanna, S., Steinberg, A. P., Pine, D. J., & Chaikin,
P. M. (2013). Living crystals of light-activated colloidal surfers. Science.
American Association for the Advancement of Science . https://doi.org/10.1126/science.1230020
chicago: Palacci, Jérémie A, S. Sacanna, A. P. Steinberg, D. J. Pine, and P. M.
Chaikin. “Living Crystals of Light-Activated Colloidal Surfers.” Science.
American Association for the Advancement of Science , 2013. https://doi.org/10.1126/science.1230020.
ieee: J. A. Palacci, S. Sacanna, A. P. Steinberg, D. J. Pine, and P. M. Chaikin,
“Living crystals of light-activated colloidal surfers,” Science, vol. 339,
no. 6122. American Association for the Advancement of Science , pp. 936–940, 2013.
ista: Palacci JA, Sacanna S, Steinberg AP, Pine DJ, Chaikin PM. 2013. Living crystals
of light-activated colloidal surfers. Science. 339(6122), 936–940.
mla: Palacci, Jérémie A., et al. “Living Crystals of Light-Activated Colloidal Surfers.”
Science, vol. 339, no. 6122, American Association for the Advancement of
Science , 2013, pp. 936–40, doi:10.1126/science.1230020.
short: J.A. Palacci, S. Sacanna, A.P. Steinberg, D.J. Pine, P.M. Chaikin, Science
339 (2013) 936–940.
date_created: 2021-02-01T14:37:29Z
date_published: 2013-02-22T00:00:00Z
date_updated: 2022-08-25T14:57:43Z
day: '22'
doi: 10.1126/science.1230020
extern: '1'
external_id:
pmid:
- '23371555'
intvolume: ' 339'
issue: '6122'
keyword:
- Multidisciplinary
language:
- iso: eng
month: '02'
oa_version: None
page: 936-940
pmid: 1
publication: Science
publication_identifier:
eissn:
- 1095-9203
issn:
- 0036-8075
publication_status: published
publisher: 'American Association for the Advancement of Science '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Living crystals of light-activated colloidal surfers
type: journal_article
user_id: 3E5EF7F0-F248-11E8-B48F-1D18A9856A87
volume: 339
year: '2013'
...
---
_id: '9167'
abstract:
- lang: eng
text: We introduce a self-propelled colloidal hematite docker that can be steered
to a small particle cargo many times its size, dock, transport the cargo to a
remote location, and then release it. The self-propulsion and docking are reversible
and activated by visible light. The docker can be steered either by a weak uniform
magnetic field or by nanoscale tracks in a textured substrate. The light-activated
motion and docking originate from osmotic/phoretic particle transport in a concentration
gradient of fuel, hydrogen peroxide, induced by the photocatalytic activity of
the hematite. The docking mechanism is versatile and can be applied to various
materials and shapes. The hematite dockers are simple single-component particles
and are synthesized in bulk quantities. This system opens up new possibilities
for designing complex micrometer-size factories as well as new biomimetic systems.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
- first_name: Stefano
full_name: Sacanna, Stefano
last_name: Sacanna
- first_name: Adrian
full_name: Vatchinsky, Adrian
last_name: Vatchinsky
- first_name: Paul M.
full_name: Chaikin, Paul M.
last_name: Chaikin
- first_name: David J.
full_name: Pine, David J.
last_name: Pine
citation:
ama: Palacci JA, Sacanna S, Vatchinsky A, Chaikin PM, Pine DJ. Photoactivated colloidal
dockers for cargo transportation. Journal of the American Chemical Society.
2013;135(43):15978-15981. doi:10.1021/ja406090s
apa: Palacci, J. A., Sacanna, S., Vatchinsky, A., Chaikin, P. M., & Pine, D.
J. (2013). Photoactivated colloidal dockers for cargo transportation. Journal
of the American Chemical Society. American Chemical Society. https://doi.org/10.1021/ja406090s
chicago: Palacci, Jérémie A, Stefano Sacanna, Adrian Vatchinsky, Paul M. Chaikin,
and David J. Pine. “Photoactivated Colloidal Dockers for Cargo Transportation.”
Journal of the American Chemical Society. American Chemical Society, 2013.
https://doi.org/10.1021/ja406090s.
ieee: J. A. Palacci, S. Sacanna, A. Vatchinsky, P. M. Chaikin, and D. J. Pine, “Photoactivated
colloidal dockers for cargo transportation,” Journal of the American Chemical
Society, vol. 135, no. 43. American Chemical Society, pp. 15978–15981, 2013.
ista: Palacci JA, Sacanna S, Vatchinsky A, Chaikin PM, Pine DJ. 2013. Photoactivated
colloidal dockers for cargo transportation. Journal of the American Chemical Society.
135(43), 15978–15981.
mla: Palacci, Jérémie A., et al. “Photoactivated Colloidal Dockers for Cargo Transportation.”
Journal of the American Chemical Society, vol. 135, no. 43, American Chemical
Society, 2013, pp. 15978–81, doi:10.1021/ja406090s.
short: J.A. Palacci, S. Sacanna, A. Vatchinsky, P.M. Chaikin, D.J. Pine, Journal
of the American Chemical Society 135 (2013) 15978–15981.
date_created: 2021-02-18T14:31:26Z
date_published: 2013-10-30T00:00:00Z
date_updated: 2021-02-22T10:10:41Z
day: '30'
doi: 10.1021/ja406090s
extern: '1'
external_id:
arxiv:
- '1310.5724'
pmid:
- '24131488'
intvolume: ' 135'
issue: '43'
keyword:
- Colloid and Surface Chemistry
- Biochemistry
- General Chemistry
- Catalysis
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1310.5724
month: '10'
oa: 1
oa_version: Preprint
page: 15978-15981
pmid: 1
publication: Journal of the American Chemical Society
publication_identifier:
eissn:
- '15205126'
issn:
- '00027863'
publication_status: published
publisher: American Chemical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Photoactivated colloidal dockers for cargo transportation
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 135
year: '2013'
...
---
_id: '9014'
abstract:
- lang: eng
text: In this Letter, we explore experimentally the phase behavior of a dense active
suspension of self-propelled colloids. In addition to a solidlike and gaslike
phase observed for high and low densities, a novel cluster phase is reported at
intermediate densities. This takes the form of a stationary assembly of dense
aggregates—resulting from a permanent dynamical merging and separation of active
colloids—whose average size grows with activity as a linear function of the self-propelling
velocity. While different possible scenarios can be considered to account for
these observations—such as a generic velocity weakening instability recently put
forward—we show that the experimental results are reproduced mathematically by
a chemotactic aggregation mechanism, originally introduced to account for bacterial
aggregation and accounting here for diffusiophoretic chemical interaction between
colloidal swimmers.
article_number: '268303'
article_processing_charge: No
article_type: letter_note
arxiv: 1
author:
- first_name: I.
full_name: Theurkauff, I.
last_name: Theurkauff
- first_name: C.
full_name: Cottin-Bizonne, C.
last_name: Cottin-Bizonne
- first_name: Jérémie A
full_name: Palacci, Jérémie A
id: 8fb92548-2b22-11eb-b7c1-a3f0d08d7c7d
last_name: Palacci
orcid: 0000-0002-7253-9465
- first_name: C.
full_name: Ybert, C.
last_name: Ybert
- first_name: L.
full_name: Bocquet, L.
last_name: Bocquet
citation:
ama: Theurkauff I, Cottin-Bizonne C, Palacci JA, Ybert C, Bocquet L. Dynamic clustering
in active colloidal suspensions with chemical signaling. Physical Review Letters.
2012;108(26). doi:10.1103/physrevlett.108.268303
apa: Theurkauff, I., Cottin-Bizonne, C., Palacci, J. A., Ybert, C., & Bocquet,
L. (2012). Dynamic clustering in active colloidal suspensions with chemical signaling.
Physical Review Letters. American Physical Society . https://doi.org/10.1103/physrevlett.108.268303
chicago: Theurkauff, I., C. Cottin-Bizonne, Jérémie A Palacci, C. Ybert, and L.
Bocquet. “Dynamic Clustering in Active Colloidal Suspensions with Chemical Signaling.”
Physical Review Letters. American Physical Society , 2012. https://doi.org/10.1103/physrevlett.108.268303.
ieee: I. Theurkauff, C. Cottin-Bizonne, J. A. Palacci, C. Ybert, and L. Bocquet,
“Dynamic clustering in active colloidal suspensions with chemical signaling,”
Physical Review Letters, vol. 108, no. 26. American Physical Society ,
2012.
ista: Theurkauff I, Cottin-Bizonne C, Palacci JA, Ybert C, Bocquet L. 2012. Dynamic
clustering in active colloidal suspensions with chemical signaling. Physical Review
Letters. 108(26), 268303.
mla: Theurkauff, I., et al. “Dynamic Clustering in Active Colloidal Suspensions
with Chemical Signaling.” Physical Review Letters, vol. 108, no. 26, 268303,
American Physical Society , 2012, doi:10.1103/physrevlett.108.268303.
short: I. Theurkauff, C. Cottin-Bizonne, J.A. Palacci, C. Ybert, L. Bocquet, Physical
Review Letters 108 (2012).
date_created: 2021-01-19T10:26:59Z
date_published: 2012-06-29T00:00:00Z
date_updated: 2023-02-23T13:46:45Z
day: '29'
doi: 10.1103/physrevlett.108.268303
extern: '1'
external_id:
arxiv:
- '1202.6264'
pmid:
- '23005020'
intvolume: ' 108'
issue: '26'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1202.6264
month: '06'
oa: 1
oa_version: Preprint
pmid: 1
publication: Physical Review Letters
publication_identifier:
eissn:
- '10797114'
issn:
- '00319007'
publication_status: published
publisher: 'American Physical Society '
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dynamic clustering in active colloidal suspensions with chemical signaling
type: journal_article
user_id: D865714E-FA4E-11E9-B85B-F5C5E5697425
volume: 108
year: '2012'
...