---
_id: '13341'
abstract:
- lang: eng
  text: "Scanning nanoscale superconducting quantum interference devices (nanoSQUIDs)\r\nare
    of growing interest for highly sensitive quantitative imaging of magnetic,\r\nspintronic,
    and transport properties of low-dimensional systems. Utilizing\r\nspecifically
    designed grooved quartz capillaries pulled into a sharp pipette,\r\nwe have fabricated
    the smallest SQUID-on-tip (SOT) devices with effective\r\ndiameters down to 39
    nm. Integration of a resistive shunt in close proximity to\r\nthe pipette apex
    combined with self-aligned deposition of In and Sn, have\r\nresulted in SOT with
    a flux noise of 42 n$\\Phi_0$Hz$^{-1/2}$, yielding a record\r\nlow spin noise
    of 0.29 $\\mu_B$Hz$^{-1/2}$. In addition, the new SOTs function\r\nat sub-Kelvin
    temperatures and in high magnetic fields of over 2.5 T.\r\nIntegrating the SOTs
    into a scanning probe microscope allowed us to image the\r\nstray field of a single
    Fe$_3$O$_4$ nanocube at 300 mK. Our results show that\r\nthe easy magnetization
    axis direction undergoes a transition from the (111)\r\ndirection at room temperature
    to an in-plane orientation, which could be\r\nattributed to the Verwey phase transition
    in Fe$_3$O$_4$."
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Y.
  full_name: Anahory, Y.
  last_name: Anahory
- first_name: H. R.
  full_name: Naren, H. R.
  last_name: Naren
- first_name: E. O.
  full_name: Lachman, E. O.
  last_name: Lachman
- first_name: S. Buhbut
  full_name: Sinai, S. Buhbut
  last_name: Sinai
- first_name: A.
  full_name: Uri, A.
  last_name: Uri
- first_name: L.
  full_name: Embon, L.
  last_name: Embon
- first_name: E.
  full_name: Yaakobi, E.
  last_name: Yaakobi
- first_name: Y.
  full_name: Myasoedov, Y.
  last_name: Myasoedov
- first_name: M. E.
  full_name: Huber, M. E.
  last_name: Huber
- first_name: Rafal
  full_name: Klajn, Rafal
  id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
  last_name: Klajn
- first_name: E.
  full_name: Zeldov, E.
  last_name: Zeldov
citation:
  ama: Anahory Y, Naren HR, Lachman EO, et al. SQUID-on-tip with single-electron spin
    sensitivity for high-field and ultra-low temperature nanomagnetic imaging. <i>Nanoscale</i>.
    2020;12(5):3174-3182. doi:<a href="https://doi.org/10.1039/C9NR08578E">10.1039/C9NR08578E</a>
  apa: Anahory, Y., Naren, H. R., Lachman, E. O., Sinai, S. B., Uri, A., Embon, L.,
    … Zeldov, E. (2020). SQUID-on-tip with single-electron spin sensitivity for high-field
    and ultra-low temperature nanomagnetic imaging. <i>Nanoscale</i>. Royal Society
    of Chemistry. <a href="https://doi.org/10.1039/C9NR08578E">https://doi.org/10.1039/C9NR08578E</a>
  chicago: Anahory, Y., H. R. Naren, E. O. Lachman, S. Buhbut Sinai, A. Uri, L. Embon,
    E. Yaakobi, et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for High-Field
    and Ultra-Low Temperature Nanomagnetic Imaging.” <i>Nanoscale</i>. Royal Society
    of Chemistry, 2020. <a href="https://doi.org/10.1039/C9NR08578E">https://doi.org/10.1039/C9NR08578E</a>.
  ieee: Y. Anahory <i>et al.</i>, “SQUID-on-tip with single-electron spin sensitivity
    for high-field and ultra-low temperature nanomagnetic imaging,” <i>Nanoscale</i>,
    vol. 12, no. 5. Royal Society of Chemistry, pp. 3174–3182, 2020.
  ista: Anahory Y, Naren HR, Lachman EO, Sinai SB, Uri A, Embon L, Yaakobi E, Myasoedov
    Y, Huber ME, Klajn R, Zeldov E. 2020. SQUID-on-tip with single-electron spin sensitivity
    for high-field and ultra-low temperature nanomagnetic imaging. Nanoscale. 12(5),
    3174–3182.
  mla: Anahory, Y., et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for
    High-Field and Ultra-Low Temperature Nanomagnetic Imaging.” <i>Nanoscale</i>,
    vol. 12, no. 5, Royal Society of Chemistry, 2020, pp. 3174–82, doi:<a href="https://doi.org/10.1039/C9NR08578E">10.1039/C9NR08578E</a>.
  short: Y. Anahory, H.R. Naren, E.O. Lachman, S.B. Sinai, A. Uri, L. Embon, E. Yaakobi,
    Y. Myasoedov, M.E. Huber, R. Klajn, E. Zeldov, Nanoscale 12 (2020) 3174–3182.
date_created: 2023-08-01T08:27:12Z
date_published: 2020-01-10T00:00:00Z
date_updated: 2023-08-02T09:35:52Z
day: '10'
doi: 10.1039/C9NR08578E
extern: '1'
external_id:
  arxiv:
  - '2001.03342'
intvolume: '        12'
issue: '5'
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.48550/arXiv.2001.03342
month: '01'
oa: 1
oa_version: Preprint
page: 3174-3182
publication: Nanoscale
publication_identifier:
  eissn:
  - 2040-3372
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low
  temperature nanomagnetic imaging
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2020'
...
---
_id: '13368'
abstract:
- lang: eng
  text: Scanning nanoscale superconducting quantum interference devices (nanoSQUIDs)
    are of growing interest for highly sensitive quantitative imaging of magnetic,
    spintronic, and transport properties of low-dimensional systems. Utilizing specifically
    designed grooved quartz capillaries pulled into a sharp pipette, we have fabricated
    the smallest SQUID-on-tip (SOT) devices with effective diameters down to 39 nm.
    Integration of a resistive shunt in close proximity to the pipette apex combined
    with self-aligned deposition of In and Sn, has resulted in SOTs with a flux noise
    of 42 nΦ0 Hz−1/2, yielding a record low spin noise of 0.29 μB Hz−1/2. In addition,
    the new SOTs function at sub-Kelvin temperatures and in high magnetic fields of
    over 2.5 T. Integrating the SOTs into a scanning probe microscope allowed us to
    image the stray field of a single Fe3O4 nanocube at 300 mK. Our results show that
    the easy magnetization axis direction undergoes a transition from the 〈111〉 direction
    at room temperature to an in-plane orientation, which could be attributed to the
    Verwey phase transition in Fe3O4.
article_processing_charge: No
article_type: original
arxiv: 1
author:
- first_name: Y.
  full_name: Anahory, Y.
  last_name: Anahory
- first_name: H. R.
  full_name: Naren, H. R.
  last_name: Naren
- first_name: E. O.
  full_name: Lachman, E. O.
  last_name: Lachman
- first_name: S.
  full_name: Buhbut Sinai, S.
  last_name: Buhbut Sinai
- first_name: A.
  full_name: Uri, A.
  last_name: Uri
- first_name: L.
  full_name: Embon, L.
  last_name: Embon
- first_name: E.
  full_name: Yaakobi, E.
  last_name: Yaakobi
- first_name: Y.
  full_name: Myasoedov, Y.
  last_name: Myasoedov
- first_name: M. E.
  full_name: Huber, M. E.
  last_name: Huber
- first_name: Rafal
  full_name: Klajn, Rafal
  id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
  last_name: Klajn
- first_name: E.
  full_name: Zeldov, E.
  last_name: Zeldov
citation:
  ama: Anahory Y, Naren HR, Lachman EO, et al. SQUID-on-tip with single-electron spin
    sensitivity for high-field and ultra-low temperature nanomagnetic imaging. <i>Nanoscale</i>.
    2020;12(5):3174-3182. doi:<a href="https://doi.org/10.1039/c9nr08578e">10.1039/c9nr08578e</a>
  apa: Anahory, Y., Naren, H. R., Lachman, E. O., Buhbut Sinai, S., Uri, A., Embon,
    L., … Zeldov, E. (2020). SQUID-on-tip with single-electron spin sensitivity for
    high-field and ultra-low temperature nanomagnetic imaging. <i>Nanoscale</i>. Royal
    Society of Chemistry. <a href="https://doi.org/10.1039/c9nr08578e">https://doi.org/10.1039/c9nr08578e</a>
  chicago: Anahory, Y., H. R. Naren, E. O. Lachman, S. Buhbut Sinai, A. Uri, L. Embon,
    E. Yaakobi, et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for High-Field
    and Ultra-Low Temperature Nanomagnetic Imaging.” <i>Nanoscale</i>. Royal Society
    of Chemistry, 2020. <a href="https://doi.org/10.1039/c9nr08578e">https://doi.org/10.1039/c9nr08578e</a>.
  ieee: Y. Anahory <i>et al.</i>, “SQUID-on-tip with single-electron spin sensitivity
    for high-field and ultra-low temperature nanomagnetic imaging,” <i>Nanoscale</i>,
    vol. 12, no. 5. Royal Society of Chemistry, pp. 3174–3182, 2020.
  ista: Anahory Y, Naren HR, Lachman EO, Buhbut Sinai S, Uri A, Embon L, Yaakobi E,
    Myasoedov Y, Huber ME, Klajn R, Zeldov E. 2020. SQUID-on-tip with single-electron
    spin sensitivity for high-field and ultra-low temperature nanomagnetic imaging.
    Nanoscale. 12(5), 3174–3182.
  mla: Anahory, Y., et al. “SQUID-on-Tip with Single-Electron Spin Sensitivity for
    High-Field and Ultra-Low Temperature Nanomagnetic Imaging.” <i>Nanoscale</i>,
    vol. 12, no. 5, Royal Society of Chemistry, 2020, pp. 3174–82, doi:<a href="https://doi.org/10.1039/c9nr08578e">10.1039/c9nr08578e</a>.
  short: Y. Anahory, H.R. Naren, E.O. Lachman, S. Buhbut Sinai, A. Uri, L. Embon,
    E. Yaakobi, Y. Myasoedov, M.E. Huber, R. Klajn, E. Zeldov, Nanoscale 12 (2020)
    3174–3182.
date_created: 2023-08-01T09:37:53Z
date_published: 2020-01-10T00:00:00Z
date_updated: 2023-08-07T10:32:15Z
day: '10'
doi: 10.1039/c9nr08578e
extern: '1'
external_id:
  arxiv:
  - '2001.03342'
  pmid:
  - '31967152'
intvolume: '        12'
issue: '5'
keyword:
- General Materials Science
language:
- iso: eng
main_file_link:
- url: https://doi.org/10.48550/arXiv.2001.03342
month: '01'
oa_version: Preprint
page: 3174-3182
pmid: 1
publication: Nanoscale
publication_identifier:
  eissn:
  - 2040-3372
  issn:
  - 2040-3364
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: SQUID-on-tip with single-electron spin sensitivity for high-field and ultra-low
  temperature nanomagnetic imaging
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 12
year: '2020'
...
---
_id: '13385'
abstract:
- lang: eng
  text: Novel light-responsive nanoparticles were synthesized by decorating the surfaces
    of gold and silver nanoparticles with a nitrospiropyran molecular photoswitch.
    Upon exposure to UV light in nonpolar solvents, these nanoparticles self-assembled
    to afford spherical aggregates, which disassembled rapidly when the UV stimulus
    was turned off. The sizes of these aggregates depended on the nanoparticle concentration,
    and their lifetimes could be controlled by adjusting the surface concentration
    of nitrospiropyran on the nanoparticles. The conformational flexibility of nitrospiropyran,
    which was altered by modifying the structure of the background ligand, had a profound
    impact on the self-assembly process. By coating the nanoparticles with a spiropyran
    lacking the nitro group, a conceptually different self-assembly system, relying
    on a reversible proton transfer, was realized. The resulting particles spontaneously
    (in the dark) assembled into aggregates that could be readily disassembled upon
    exposure to blue light.
article_processing_charge: No
article_type: original
author:
- first_name: Pintu K.
  full_name: Kundu, Pintu K.
  last_name: Kundu
- first_name: Sanjib
  full_name: Das, Sanjib
  last_name: Das
- first_name: Johannes
  full_name: Ahrens, Johannes
  last_name: Ahrens
- first_name: Rafal
  full_name: Klajn, Rafal
  id: 8e84690e-1e48-11ed-a02b-a1e6fb8bb53b
  last_name: Klajn
citation:
  ama: Kundu PK, Das S, Ahrens J, Klajn R. Controlling the lifetimes of dynamic nanoparticle
    aggregates by spiropyran functionalization. <i>Nanoscale</i>. 2016;8(46):19280-19286.
    doi:<a href="https://doi.org/10.1039/c6nr05959g">10.1039/c6nr05959g</a>
  apa: Kundu, P. K., Das, S., Ahrens, J., &#38; Klajn, R. (2016). Controlling the
    lifetimes of dynamic nanoparticle aggregates by spiropyran functionalization.
    <i>Nanoscale</i>. Royal Society of Chemistry. <a href="https://doi.org/10.1039/c6nr05959g">https://doi.org/10.1039/c6nr05959g</a>
  chicago: Kundu, Pintu K., Sanjib Das, Johannes Ahrens, and Rafal Klajn. “Controlling
    the Lifetimes of Dynamic Nanoparticle Aggregates by Spiropyran Functionalization.”
    <i>Nanoscale</i>. Royal Society of Chemistry, 2016. <a href="https://doi.org/10.1039/c6nr05959g">https://doi.org/10.1039/c6nr05959g</a>.
  ieee: P. K. Kundu, S. Das, J. Ahrens, and R. Klajn, “Controlling the lifetimes of
    dynamic nanoparticle aggregates by spiropyran functionalization,” <i>Nanoscale</i>,
    vol. 8, no. 46. Royal Society of Chemistry, pp. 19280–19286, 2016.
  ista: Kundu PK, Das S, Ahrens J, Klajn R. 2016. Controlling the lifetimes of dynamic
    nanoparticle aggregates by spiropyran functionalization. Nanoscale. 8(46), 19280–19286.
  mla: Kundu, Pintu K., et al. “Controlling the Lifetimes of Dynamic Nanoparticle
    Aggregates by Spiropyran Functionalization.” <i>Nanoscale</i>, vol. 8, no. 46,
    Royal Society of Chemistry, 2016, pp. 19280–86, doi:<a href="https://doi.org/10.1039/c6nr05959g">10.1039/c6nr05959g</a>.
  short: P.K. Kundu, S. Das, J. Ahrens, R. Klajn, Nanoscale 8 (2016) 19280–19286.
date_created: 2023-08-01T09:42:22Z
date_published: 2016-10-19T00:00:00Z
date_updated: 2023-08-07T12:24:46Z
day: '19'
doi: 10.1039/c6nr05959g
extern: '1'
external_id:
  pmid:
  - '27830865'
intvolume: '         8'
issue: '46'
keyword:
- General Materials Science
language:
- iso: eng
main_file_link:
- open_access: '1'
  url: https://doi.org/10.1039/C6NR05959G
month: '10'
oa: 1
oa_version: Published Version
page: 19280-19286
pmid: 1
publication: Nanoscale
publication_identifier:
  eissn:
  - 2040-3372
  issn:
  - 2040-3364
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Controlling the lifetimes of dynamic nanoparticle aggregates by spiropyran
  functionalization
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 8
year: '2016'
...