---
_id: '13197'
abstract:
- lang: eng
text: "Nominally identical materials exchange net electric charge during contact
through a mechanism that is still debated. ‘Mosaic models’, in which surfaces
are presumed to consist of a random patchwork of microscopic donor/acceptor sites,
offer an appealing explanation for this phenomenon. However, recent experiments
have shown that global differences persist even between same-material samples,
which the standard mosaic framework does not account for. Here, we expand the
mosaic framework by incorporating global differences in the densities of donor/acceptor
sites. We develop\r\nan analytical model, backed by numerical simulations, that
smoothly connects the global and deterministic charge transfer of different materials
to the local and stochastic mosaic picture normally associated with identical
materials. Going further, we extend our model to explain the effect of contact
asymmetries during sliding, providing a plausible explanation for reversal of
charging sign that has been observed experimentally."
acknowledgement: "This project has received funding from the European Research Council
Grant Agreement No. 949120 and from\r\nthe European Union’s Horizon 2020 research
and innovation program under the Marie Sklodowska-Curie Grant\r\nAgreement No. 754411. "
article_number: '065601'
article_processing_charge: No
article_type: original
author:
- first_name: Galien M
full_name: Grosjean, Galien M
id: 0C5FDA4A-9CF6-11E9-8939-FF05E6697425
last_name: Grosjean
orcid: 0000-0001-5154-417X
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
citation:
ama: 'Grosjean GM, Waitukaitis SR. Asymmetries in triboelectric charging: Generalizing
mosaic models to different-material samples and sliding contacts. Physical
Review Materials. 2023;7(6). doi:10.1103/physrevmaterials.7.065601'
apa: 'Grosjean, G. M., & Waitukaitis, S. R. (2023). Asymmetries in triboelectric
charging: Generalizing mosaic models to different-material samples and sliding
contacts. Physical Review Materials. American Physical Society. https://doi.org/10.1103/physrevmaterials.7.065601'
chicago: 'Grosjean, Galien M, and Scott R Waitukaitis. “Asymmetries in Triboelectric
Charging: Generalizing Mosaic Models to Different-Material Samples and Sliding
Contacts.” Physical Review Materials. American Physical Society, 2023.
https://doi.org/10.1103/physrevmaterials.7.065601.'
ieee: 'G. M. Grosjean and S. R. Waitukaitis, “Asymmetries in triboelectric charging:
Generalizing mosaic models to different-material samples and sliding contacts,”
Physical Review Materials, vol. 7, no. 6. American Physical Society, 2023.'
ista: 'Grosjean GM, Waitukaitis SR. 2023. Asymmetries in triboelectric charging:
Generalizing mosaic models to different-material samples and sliding contacts.
Physical Review Materials. 7(6), 065601.'
mla: 'Grosjean, Galien M., and Scott R. Waitukaitis. “Asymmetries in Triboelectric
Charging: Generalizing Mosaic Models to Different-Material Samples and Sliding
Contacts.” Physical Review Materials, vol. 7, no. 6, 065601, American Physical
Society, 2023, doi:10.1103/physrevmaterials.7.065601.'
short: G.M. Grosjean, S.R. Waitukaitis, Physical Review Materials 7 (2023).
date_created: 2023-07-07T12:48:01Z
date_published: 2023-06-13T00:00:00Z
date_updated: 2023-08-02T06:34:47Z
day: '13'
ddc:
- '537'
department:
- _id: ScWa
doi: 10.1103/physrevmaterials.7.065601
ec_funded: 1
external_id:
arxiv:
- '2304.12861'
isi:
- '001019565900002'
file:
- access_level: open_access
checksum: 75584730d9cdd50eeccb4c52c509776d
content_type: application/pdf
creator: ggrosjea
date_created: 2023-07-07T12:49:51Z
date_updated: 2023-07-07T12:49:51Z
file_id: '13198'
file_name: Mosaic_asymmetries.pdf
file_size: 1127040
relation: main_file
success: 1
file_date_updated: 2023-07-07T12:49:51Z
has_accepted_license: '1'
intvolume: ' 7'
isi: 1
issue: '6'
keyword:
- Physics and Astronomy (miscellaneous)
- General Materials Science
language:
- iso: eng
month: '06'
oa: 1
oa_version: Submitted Version
project:
- _id: 0aa60e99-070f-11eb-9043-a6de6bdc3afa
call_identifier: H2020
grant_number: '949120'
name: 'Tribocharge: a multi-scale approach to an enduring problem in physics'
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Materials
publication_identifier:
issn:
- 2475-9953
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: 'Asymmetries in triboelectric charging: Generalizing mosaic models to different-material
samples and sliding contacts'
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 7
year: '2023'
...
---
_id: '12697'
abstract:
- lang: eng
text: Models for same-material contact electrification in granular media often rely
on a local charge-driving parameter whose spatial variations lead to a stochastic
origin for charge exchange. Measuring the charge transfer from individual granular
spheres after contacts with substrates of the same material, we find instead a
“global” charging behavior, coherent over the sample’s whole surface. Cleaning
and baking samples fully resets charging magnitude and direction, which indicates
the underlying global parameter is not intrinsic to the material, but acquired
from its history. Charging behavior is randomly and irreversibly affected by changes
in relative humidity, hinting at a mechanism where adsorbates, in particular,
water, are fundamental to the charge-transfer process.
acknowledgement: "We would like to thank Troy Shinbrot, Victor Lee and Daniele Foresti
for helpful discussions. This project has received funding from the European Research
Council Grant Agreement No. 949120 and from the the Marie Sk lodowska-Curie Grant
Agreement No. 754411 under\r\nthe European Union’s Horizon 2020 research and innovation
program."
article_number: '098202'
article_processing_charge: No
article_type: original
author:
- first_name: Galien M
full_name: Grosjean, Galien M
id: 0C5FDA4A-9CF6-11E9-8939-FF05E6697425
last_name: Grosjean
orcid: 0000-0001-5154-417X
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
citation:
ama: Grosjean GM, Waitukaitis SR. Single-collision statistics reveal a global mechanism
driven by sample history for contact electrification in granular media. Physical
Review Letters. 2023;130(9). doi:10.1103/physrevlett.130.098202
apa: Grosjean, G. M., & Waitukaitis, S. R. (2023). Single-collision statistics
reveal a global mechanism driven by sample history for contact electrification
in granular media. Physical Review Letters. American Physical Society.
https://doi.org/10.1103/physrevlett.130.098202
chicago: Grosjean, Galien M, and Scott R Waitukaitis. “Single-Collision Statistics
Reveal a Global Mechanism Driven by Sample History for Contact Electrification
in Granular Media.” Physical Review Letters. American Physical Society,
2023. https://doi.org/10.1103/physrevlett.130.098202.
ieee: G. M. Grosjean and S. R. Waitukaitis, “Single-collision statistics reveal
a global mechanism driven by sample history for contact electrification in granular
media,” Physical Review Letters, vol. 130, no. 9. American Physical Society,
2023.
ista: Grosjean GM, Waitukaitis SR. 2023. Single-collision statistics reveal a global
mechanism driven by sample history for contact electrification in granular media.
Physical Review Letters. 130(9), 098202.
mla: Grosjean, Galien M., and Scott R. Waitukaitis. “Single-Collision Statistics
Reveal a Global Mechanism Driven by Sample History for Contact Electrification
in Granular Media.” Physical Review Letters, vol. 130, no. 9, 098202, American
Physical Society, 2023, doi:10.1103/physrevlett.130.098202.
short: G.M. Grosjean, S.R. Waitukaitis, Physical Review Letters 130 (2023).
date_created: 2023-02-28T12:14:46Z
date_published: 2023-03-03T00:00:00Z
date_updated: 2023-08-22T08:41:32Z
day: '03'
ddc:
- '530'
- '537'
department:
- _id: ScWa
doi: 10.1103/physrevlett.130.098202
ec_funded: 1
external_id:
arxiv:
- '2211.02488'
isi:
- '000946178200008'
file:
- access_level: open_access
checksum: c4f2f6eea0408811f8f4898e15890355
content_type: application/pdf
creator: ggrosjea
date_created: 2023-02-28T12:20:27Z
date_updated: 2023-02-28T12:20:27Z
file_id: '12698'
file_name: Main_Preprint.pdf
file_size: 2301864
relation: main_file
success: 1
- access_level: open_access
checksum: 6af6ed6c97a977f923de4162294b43c4
content_type: application/pdf
creator: ggrosjea
date_created: 2023-02-28T12:20:55Z
date_updated: 2023-02-28T12:20:55Z
file_id: '12699'
file_name: Suppl_info.pdf
file_size: 1138625
relation: main_file
success: 1
- access_level: open_access
checksum: 3f20365fb9515bdba3a111d912c8d8b4
content_type: video/mp4
creator: ggrosjea
date_created: 2023-02-28T12:37:54Z
date_updated: 2023-02-28T12:37:54Z
file_id: '12700'
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file_size: 793449
relation: main_file
success: 1
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checksum: 90cecacbe0e2f9dea11f91a4ba20c32e
content_type: video/mp4
creator: ggrosjea
date_created: 2023-02-28T12:37:54Z
date_updated: 2023-02-28T12:37:54Z
file_id: '12701'
file_name: Suppl_vid2.mp4
file_size: 455925
relation: main_file
success: 1
file_date_updated: 2023-02-28T12:37:54Z
has_accepted_license: '1'
intvolume: ' 130'
isi: 1
issue: '9'
keyword:
- General Physics
- Electrostatics
- Triboelectricity
- Soft Matter
- Acoustic Levitation
- Granular Materials
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2211.02488
month: '03'
oa: 1
oa_version: Preprint
project:
- _id: 0aa60e99-070f-11eb-9043-a6de6bdc3afa
call_identifier: H2020
grant_number: '949120'
name: 'Tribocharge: a multi-scale approach to an enduring problem in physics'
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '8101'
relation: research_paper
status: public
status: public
title: Single-collision statistics reveal a global mechanism driven by sample history
for contact electrification in granular media
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: 130
year: '2023'
...
---
_id: '14514'
abstract:
- lang: eng
text: 'The elastic Leidenfrost effect occurs when a vaporizable soft solid is lowered
onto a hot surface. Evaporative flow couples to elastic deformation, giving spontaneous
bouncing or steady-state floating. The effect embodies an unexplored interplay
between thermodynamics, elasticity, and lubrication: despite being observed, its
basic theoretical description remains a challenge. Here, we provide a theory of
elastic Leidenfrost floating. As weight increases, a rigid solid sits closer to
the hot surface. By contrast, we discover an elasticity-dominated regime where
the heavier the solid, the higher it floats. This geometry-governed behavior is
reminiscent of the dynamics of large liquid Leidenfrost drops. We show that this
elastic regime is characterized by Hertzian behavior of the solid’s underbelly
and derive how the float height scales with materials parameters. Introducing
a dimensionless elastic Leidenfrost number, we capture the crossover between rigid
and Hertzian behavior. Our results provide theoretical underpinning for recent
experiments, and point to the design of novel soft machines.'
acknowledgement: "We are grateful to Dominic Vella, Jens Eggers, John Kolinski, Joshua
Dijksman, and Daniel Bonn for insightful discussions. J. B. and A. S. acknowledge
the support of the Engineering and Physical Sciences Research Council (EPSRC) through
New Investigator Award No. EP/\r\nT000961/1. A. S. acknowledges the support of Royal
Society under Grant No. RGS/R2/202135. J. E. S. acknowledges EPSRC Grants No. EP/N016602/1,
EP/S022848/1, EP/S029966/1, and EP/P031684/1."
article_number: '168201'
article_processing_charge: Yes (in subscription journal)
article_type: original
author:
- first_name: Jack
full_name: Binysh, Jack
last_name: Binysh
- first_name: Indrajit
full_name: Chakraborty, Indrajit
last_name: Chakraborty
- first_name: Mykyta V.
full_name: Chubynsky, Mykyta V.
last_name: Chubynsky
- first_name: Vicente L
full_name: Diaz Melian, Vicente L
id: b6798902-eea0-11ea-9cbc-a8e14286c631
last_name: Diaz Melian
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
- first_name: James E.
full_name: Sprittles, James E.
last_name: Sprittles
- first_name: Anton
full_name: Souslov, Anton
last_name: Souslov
citation:
ama: Binysh J, Chakraborty I, Chubynsky MV, et al. Modeling Leidenfrost levitation
of soft elastic solids. Physical Review Letters. 2023;131(16). doi:10.1103/PhysRevLett.131.168201
apa: Binysh, J., Chakraborty, I., Chubynsky, M. V., Diaz Melian, V. L., Waitukaitis,
S. R., Sprittles, J. E., & Souslov, A. (2023). Modeling Leidenfrost levitation
of soft elastic solids. Physical Review Letters. American Physical Society.
https://doi.org/10.1103/PhysRevLett.131.168201
chicago: Binysh, Jack, Indrajit Chakraborty, Mykyta V. Chubynsky, Vicente L Diaz
Melian, Scott R Waitukaitis, James E. Sprittles, and Anton Souslov. “Modeling
Leidenfrost Levitation of Soft Elastic Solids.” Physical Review Letters.
American Physical Society, 2023. https://doi.org/10.1103/PhysRevLett.131.168201.
ieee: J. Binysh et al., “Modeling Leidenfrost levitation of soft elastic
solids,” Physical Review Letters, vol. 131, no. 16. American Physical Society,
2023.
ista: Binysh J, Chakraborty I, Chubynsky MV, Diaz Melian VL, Waitukaitis SR, Sprittles
JE, Souslov A. 2023. Modeling Leidenfrost levitation of soft elastic solids. Physical
Review Letters. 131(16), 168201.
mla: Binysh, Jack, et al. “Modeling Leidenfrost Levitation of Soft Elastic Solids.”
Physical Review Letters, vol. 131, no. 16, 168201, American Physical Society,
2023, doi:10.1103/PhysRevLett.131.168201.
short: J. Binysh, I. Chakraborty, M.V. Chubynsky, V.L. Diaz Melian, S.R. Waitukaitis,
J.E. Sprittles, A. Souslov, Physical Review Letters 131 (2023).
date_created: 2023-11-12T23:00:55Z
date_published: 2023-10-20T00:00:00Z
date_updated: 2023-11-13T09:21:30Z
day: '20'
ddc:
- '530'
department:
- _id: ScWa
doi: 10.1103/PhysRevLett.131.168201
file:
- access_level: open_access
checksum: 1a419e25b762aadffbcc8eb2e609bd97
content_type: application/pdf
creator: dernst
date_created: 2023-11-13T09:12:58Z
date_updated: 2023-11-13T09:12:58Z
file_id: '14524'
file_name: 2023_PhysRevLetters_Binysh.pdf
file_size: 724098
relation: main_file
success: 1
file_date_updated: 2023-11-13T09:12:58Z
has_accepted_license: '1'
intvolume: ' 131'
issue: '16'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '14523'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Modeling Leidenfrost levitation of soft elastic solids
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: 131
year: '2023'
...
---
_id: '14523'
abstract:
- lang: eng
text: see Readme file
article_processing_charge: No
author:
- first_name: Jack
full_name: Binysh, Jack
last_name: Binysh
- first_name: Indrajit
full_name: Chakraborty, Indrajit
last_name: Chakraborty
- first_name: Mykyta
full_name: Chubynsky, Mykyta
last_name: Chubynsky
- first_name: Vicente L
full_name: Diaz Melian, Vicente L
id: b6798902-eea0-11ea-9cbc-a8e14286c631
last_name: Diaz Melian
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
- first_name: James
full_name: Sprittles, James
last_name: Sprittles
- first_name: Anton
full_name: Souslov, Anton
last_name: Souslov
citation:
ama: 'Binysh J, Chakraborty I, Chubynsky M, et al. SouslovLab/PRL2023-ModellingLeidenfrostLevitationofSoftElasticSolids:
v1.0.1. 2023. doi:10.5281/ZENODO.8329143'
apa: 'Binysh, J., Chakraborty, I., Chubynsky, M., Diaz Melian, V. L., Waitukaitis,
S. R., Sprittles, J., & Souslov, A. (2023). SouslovLab/PRL2023-ModellingLeidenfrostLevitationofSoftElasticSolids:
v1.0.1. Zenodo. https://doi.org/10.5281/ZENODO.8329143'
chicago: 'Binysh, Jack, Indrajit Chakraborty, Mykyta Chubynsky, Vicente L Diaz Melian,
Scott R Waitukaitis, James Sprittles, and Anton Souslov. “SouslovLab/PRL2023-ModellingLeidenfrostLevitationofSoftElasticSolids:
V1.0.1.” Zenodo, 2023. https://doi.org/10.5281/ZENODO.8329143.'
ieee: 'J. Binysh et al., “SouslovLab/PRL2023-ModellingLeidenfrostLevitationofSoftElasticSolids:
v1.0.1.” Zenodo, 2023.'
ista: 'Binysh J, Chakraborty I, Chubynsky M, Diaz Melian VL, Waitukaitis SR, Sprittles
J, Souslov A. 2023. SouslovLab/PRL2023-ModellingLeidenfrostLevitationofSoftElasticSolids:
v1.0.1, Zenodo, 10.5281/ZENODO.8329143.'
mla: 'Binysh, Jack, et al. SouslovLab/PRL2023-ModellingLeidenfrostLevitationofSoftElasticSolids:
V1.0.1. Zenodo, 2023, doi:10.5281/ZENODO.8329143.'
short: J. Binysh, I. Chakraborty, M. Chubynsky, V.L. Diaz Melian, S.R. Waitukaitis,
J. Sprittles, A. Souslov, (2023).
date_created: 2023-11-13T09:12:11Z
date_published: 2023-09-08T00:00:00Z
date_updated: 2023-11-13T09:21:31Z
day: '08'
ddc:
- '530'
department:
- _id: ScWa
doi: 10.5281/ZENODO.8329143
main_file_link:
- open_access: '1'
url: https://doi.org/10.5281/ZENODO.8329143
month: '09'
oa: 1
oa_version: Published Version
publisher: Zenodo
related_material:
record:
- id: '14514'
relation: used_in_publication
status: public
status: public
title: 'SouslovLab/PRL2023-ModellingLeidenfrostLevitationofSoftElasticSolids: v1.0.1'
type: research_data_reference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '12789'
abstract:
- lang: eng
text: Experiments have shown that charge distributions of granular materials are
non-Gaussian, with broad tails that indicate many particles with high charge.
This observation has consequences for the behavior of granular materials in many
settings, and may bear relevance to the underlying charge transfer mechanism.
However, there is the unaddressed possibility that broad tails arise due to experimental
uncertainties, as determining the shapes of tails is nontrivial. Here we show
that measurement uncertainties can indeed account for most of the tail broadening
previously observed. The clue that reveals this is that distributions are sensitive
to the electric field at which they are measured; ones measured at low (high)
fields have larger (smaller) tails. Accounting for sources of uncertainty, we
reproduce this broadening in silico. Finally, we use our results to back out the
true charge distribution without broadening, which we find is still non-Guassian,
though with substantially different behavior at the tails and indicating significantly
fewer highly charged particles. These results have implications in many natural
settings where electrostatic interactions, especially among highly charged particles,
strongly affect granular behavior.
acknowledged_ssus:
- _id: M-Shop
acknowledgement: This research was supported by Grants QUIMAL 160001 and Fondecyt
1221597. This project has received funding from the European Research Council (ERC)
under the European Union's Horizon 2020 research and innovation programme (Grant
Agreement No. 949120). This research was supported by the Scientific Service Units
of The Institute of Science and Technology Austria (ISTA) through resources provided
by the Miba Machine Shop. We thank the machine shop technical assistance of Ricardo
Silva and Andrés Espinosa at Departamento de Física, Universidad de Chile.
article_number: '034901'
article_processing_charge: No
article_type: original
author:
- first_name: Nicolás
full_name: Mujica, Nicolás
last_name: Mujica
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
citation:
ama: Mujica N, Waitukaitis SR. Accurate determination of the shapes of granular
charge distributions. Physical Review E. 2023;107(3). doi:10.1103/PhysRevE.107.034901
apa: Mujica, N., & Waitukaitis, S. R. (2023). Accurate determination of the
shapes of granular charge distributions. Physical Review E. American Physical
Society. https://doi.org/10.1103/PhysRevE.107.034901
chicago: Mujica, Nicolás, and Scott R Waitukaitis. “Accurate Determination of the
Shapes of Granular Charge Distributions.” Physical Review E. American Physical
Society, 2023. https://doi.org/10.1103/PhysRevE.107.034901.
ieee: N. Mujica and S. R. Waitukaitis, “Accurate determination of the shapes of
granular charge distributions,” Physical Review E, vol. 107, no. 3. American
Physical Society, 2023.
ista: Mujica N, Waitukaitis SR. 2023. Accurate determination of the shapes of granular
charge distributions. Physical Review E. 107(3), 034901.
mla: Mujica, Nicolás, and Scott R. Waitukaitis. “Accurate Determination of the Shapes
of Granular Charge Distributions.” Physical Review E, vol. 107, no. 3,
034901, American Physical Society, 2023, doi:10.1103/PhysRevE.107.034901.
short: N. Mujica, S.R. Waitukaitis, Physical Review E 107 (2023).
date_created: 2023-04-02T22:01:10Z
date_published: 2023-03-01T00:00:00Z
date_updated: 2023-11-28T09:22:25Z
day: '01'
ddc:
- '530'
department:
- _id: ScWa
doi: 10.1103/PhysRevE.107.034901
ec_funded: 1
external_id:
isi:
- '000992142700001'
file:
- access_level: open_access
checksum: 48f5dfe4e5f1c46c3c86805cd8f84bea
content_type: application/pdf
creator: swaituka
date_created: 2023-11-27T09:51:48Z
date_updated: 2023-11-27T09:51:48Z
file_id: '14612'
file_name: PhysRevE.107.034901 (1).pdf
file_size: 1428631
relation: main_file
success: 1
file_date_updated: 2023-11-27T09:51:48Z
has_accepted_license: '1'
intvolume: ' 107'
isi: 1
issue: '3'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
project:
- _id: 0aa60e99-070f-11eb-9043-a6de6bdc3afa
call_identifier: H2020
grant_number: '949120'
name: 'Tribocharge: a multi-scale approach to an enduring problem in physics'
publication: Physical Review E
publication_identifier:
eissn:
- 2470-0053
issn:
- 2470-0045
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Accurate determination of the shapes of granular charge distributions
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 107
year: '2023'
...
---
_id: '14864'
acknowledgement: This project has received funding from the European Research Council
(ERC) under the European Union’s Starting Grant (No. 949120).
article_number: '6166'
article_processing_charge: No
author:
- first_name: Andrea
full_name: Stöllner, Andrea
id: 4bdcf7f6-eb97-11eb-a6c2-9981bbdc3bed
last_name: Stöllner
orcid: 0000-0002-0464-8440
- first_name: Isaac C
full_name: Lenton, Isaac C
id: a550210f-223c-11ec-8182-e2d45e817efb
last_name: Lenton
orcid: 0000-0002-5010-6984
- first_name: Caroline J
full_name: Muller, Caroline J
id: f978ccb0-3f7f-11eb-b193-b0e2bd13182b
last_name: Muller
orcid: 0000-0001-5836-5350
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
citation:
ama: 'Stöllner A, Lenton IC, Muller CJ, Waitukaitis SR. Measuring spontaneous charging
of single aerosol particles. In: EGU General Assembly 2023. European Geosciences
Union; 2023. doi:10.5194/egusphere-egu23-6166'
apa: 'Stöllner, A., Lenton, I. C., Muller, C. J., & Waitukaitis, S. R. (2023).
Measuring spontaneous charging of single aerosol particles. In EGU General
Assembly 2023. Vienna, Austria & Virtual: European Geosciences Union.
https://doi.org/10.5194/egusphere-egu23-6166'
chicago: Stöllner, Andrea, Isaac C Lenton, Caroline J Muller, and Scott R Waitukaitis.
“Measuring Spontaneous Charging of Single Aerosol Particles.” In EGU General
Assembly 2023. European Geosciences Union, 2023. https://doi.org/10.5194/egusphere-egu23-6166.
ieee: A. Stöllner, I. C. Lenton, C. J. Muller, and S. R. Waitukaitis, “Measuring
spontaneous charging of single aerosol particles,” in EGU General Assembly
2023, Vienna, Austria & Virtual, 2023.
ista: Stöllner A, Lenton IC, Muller CJ, Waitukaitis SR. 2023. Measuring spontaneous
charging of single aerosol particles. EGU General Assembly 2023. EGU General Assembly,
6166.
mla: Stöllner, Andrea, et al. “Measuring Spontaneous Charging of Single Aerosol
Particles.” EGU General Assembly 2023, 6166, European Geosciences Union,
2023, doi:10.5194/egusphere-egu23-6166.
short: A. Stöllner, I.C. Lenton, C.J. Muller, S.R. Waitukaitis, in:, EGU General
Assembly 2023, European Geosciences Union, 2023.
conference:
end_date: 2023-04-28
location: Vienna, Austria & Virtual
name: EGU General Assembly
start_date: 2023-04-23
date_created: 2024-01-22T12:09:07Z
date_published: 2023-04-23T00:00:00Z
date_updated: 2024-01-24T11:21:42Z
day: '23'
ddc:
- '530'
department:
- _id: CaMu
- _id: ScWa
doi: 10.5194/egusphere-egu23-6166
ec_funded: 1
file:
- access_level: open_access
checksum: 8d6ddbb359e584b156f991f00196d86b
content_type: application/pdf
creator: dernst
date_created: 2024-01-23T13:00:26Z
date_updated: 2024-01-23T13:00:26Z
file_id: '14880'
file_name: 2023_EGU_Stoellner.pdf
file_size: 419736
relation: main_file
success: 1
file_date_updated: 2024-01-23T13:00:26Z
has_accepted_license: '1'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
project:
- _id: 0aa60e99-070f-11eb-9043-a6de6bdc3afa
call_identifier: H2020
grant_number: '949120'
name: 'Tribocharge: a multi-scale approach to an enduring problem in physics'
publication: EGU General Assembly 2023
publication_status: published
publisher: European Geosciences Union
status: public
title: Measuring spontaneous charging of single aerosol particles
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: conference_abstract
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2023'
...
---
_id: '10733'
abstract:
- lang: eng
text: 'When a cylindrical object penetrates granular matter near a vertical boundary,
it experiences two effects: its center of mass moves horizontally away from the
wall, and it rotates around its symmetry axis. Here we show experimentally that,
if two identical intruders instead of one are released side-by-side near the wall,
both effects are also detected. However, unexpected phenomena appear due to a
cooperative dynamics between the intruders. The net horizontal distance traveled
by the common center of mass of the twin intruders is much larger than that traveled
by one intruder released at the same initial distance from the wall, and the rotation
is also larger. The experimental results are well described by the Discrete Element
Method (DEM), which reveals that, as the number of intruders horizontally released
side-by-side increases, the total energy dissipation per intruder decreases. Finally,
DEM simulations demonstrate that the horizontal repulsion is substantially enhanced
if groups of intruders are released forming a column near the wall.'
acknowledgement: 'We acknowledge the University of Havana’s institutional project
“Granular media: creating tools for the prevention of catastrophes”. The Institute
“Pedro Kourí” is thanked for allowing us using their computing cluster. E. Altshuler
found inspiration in the late M. Álvarez-Ponte.'
article_number: '39'
article_processing_charge: No
article_type: original
author:
- first_name: M.
full_name: Espinosa, M.
last_name: Espinosa
- first_name: Vicente L
full_name: Diaz Melian, Vicente L
id: b6798902-eea0-11ea-9cbc-a8e14286c631
last_name: Diaz Melian
- first_name: A.
full_name: Serrano-Muñoz, A.
last_name: Serrano-Muñoz
- first_name: E.
full_name: Altshuler, E.
last_name: Altshuler
citation:
ama: Espinosa M, Diaz Melian VL, Serrano-Muñoz A, Altshuler E. Intruders cooperatively
interact with a wall into granular matter. Granular Matter. 2022;24(1).
doi:10.1007/s10035-021-01200-8
apa: Espinosa, M., Diaz Melian, V. L., Serrano-Muñoz, A., & Altshuler, E. (2022).
Intruders cooperatively interact with a wall into granular matter. Granular
Matter. Springer Nature. https://doi.org/10.1007/s10035-021-01200-8
chicago: Espinosa, M., Vicente L Diaz Melian, A. Serrano-Muñoz, and E. Altshuler.
“Intruders Cooperatively Interact with a Wall into Granular Matter.” Granular
Matter. Springer Nature, 2022. https://doi.org/10.1007/s10035-021-01200-8.
ieee: M. Espinosa, V. L. Diaz Melian, A. Serrano-Muñoz, and E. Altshuler, “Intruders
cooperatively interact with a wall into granular matter,” Granular Matter,
vol. 24, no. 1. Springer Nature, 2022.
ista: Espinosa M, Diaz Melian VL, Serrano-Muñoz A, Altshuler E. 2022. Intruders
cooperatively interact with a wall into granular matter. Granular Matter. 24(1),
39.
mla: Espinosa, M., et al. “Intruders Cooperatively Interact with a Wall into Granular
Matter.” Granular Matter, vol. 24, no. 1, 39, Springer Nature, 2022, doi:10.1007/s10035-021-01200-8.
short: M. Espinosa, V.L. Diaz Melian, A. Serrano-Muñoz, E. Altshuler, Granular Matter
24 (2022).
date_created: 2022-02-06T23:01:30Z
date_published: 2022-01-24T00:00:00Z
date_updated: 2023-08-02T14:10:13Z
day: '24'
department:
- _id: ScWa
doi: 10.1007/s10035-021-01200-8
external_id:
arxiv:
- '2110.15311'
isi:
- '000746623000001'
intvolume: ' 24'
isi: 1
issue: '1'
keyword:
- granular matter
- boundary effects
- intruder penetration
- sedimentation
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2110.15311
month: '01'
oa: 1
oa_version: Preprint
publication: Granular Matter
publication_identifier:
eissn:
- 1434-7636
issn:
- 1434-5021
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Intruders cooperatively interact with a wall into granular matter
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 24
year: '2022'
...
---
_id: '12109'
abstract:
- lang: eng
text: Kelvin probe force microscopy (KPFM) is a powerful tool for studying contact
electrification (CE) at the nanoscale, but converting KPFM voltage maps to charge
density maps is nontrivial due to long-range forces and complex system geometry.
Here we present a strategy using finite-element method (FEM) simulations to determine
the Green's function of the KPFM probe/insulator/ground system, which allows us
to quantitatively extract surface charge. Testing our approach with synthetic
data, we find that accounting for the atomic force microscope (AFM) tip, cone,
and cantilever is necessary to recover a known input and that existing methods
lead to gross miscalculation or even the incorrect sign of the underlying charge.
Applying it to experimental data, we demonstrate its capacity to extract realistic
surface charge densities and fine details from contact-charged surfaces. Our method
gives a straightforward recipe to convert qualitative KPFM voltage data into quantitative
charge data over a range of experimental conditions, enabling quantitative CE
at the nanoscale.
acknowledged_ssus:
- _id: M-Shop
- _id: NanoFab
- _id: ScienComp
acknowledgement: "This project has received funding from the European Research Council
(ERC) under the European Union’s Horizon 2020 research and innovation programme
(Grant Agreement\r\nNo. 949120). This research was supported by the Scientific Service
Units of the Institute of Science and Technology Austria (ISTA) through resources
provided by the Miba Machine\r\nShop, the Nanofabrication Facility, and the Scientific
Computing Facility. We thank F. Stumpf from Park Systems for useful discussions
and support with scanning probe microscopy.\r\nF.P. and J.C.S. contributed equally
to this work."
article_number: '125605'
article_processing_charge: No
article_type: original
author:
- first_name: Felix
full_name: Pertl, Felix
id: 6313aec0-15b2-11ec-abd3-ed67d16139af
last_name: Pertl
- first_name: Juan Carlos A
full_name: Sobarzo Ponce, Juan Carlos A
id: 4B807D68-AE37-11E9-AC72-31CAE5697425
last_name: Sobarzo Ponce
- first_name: Lubuna B
full_name: Shafeek, Lubuna B
id: 3CD37A82-F248-11E8-B48F-1D18A9856A87
last_name: Shafeek
orcid: 0000-0001-7180-6050
- first_name: Tobias
full_name: Cramer, Tobias
last_name: Cramer
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
citation:
ama: Pertl F, Sobarzo Ponce JCA, Shafeek LB, Cramer T, Waitukaitis SR. Quantifying
nanoscale charge density features of contact-charged surfaces with an FEM/KPFM-hybrid
approach. Physical Review Materials. 2022;6(12). doi:10.1103/PhysRevMaterials.6.125605
apa: Pertl, F., Sobarzo Ponce, J. C. A., Shafeek, L. B., Cramer, T., & Waitukaitis,
S. R. (2022). Quantifying nanoscale charge density features of contact-charged
surfaces with an FEM/KPFM-hybrid approach. Physical Review Materials. American
Physical Society. https://doi.org/10.1103/PhysRevMaterials.6.125605
chicago: Pertl, Felix, Juan Carlos A Sobarzo Ponce, Lubuna B Shafeek, Tobias Cramer,
and Scott R Waitukaitis. “Quantifying Nanoscale Charge Density Features of Contact-Charged
Surfaces with an FEM/KPFM-Hybrid Approach.” Physical Review Materials.
American Physical Society, 2022. https://doi.org/10.1103/PhysRevMaterials.6.125605.
ieee: F. Pertl, J. C. A. Sobarzo Ponce, L. B. Shafeek, T. Cramer, and S. R. Waitukaitis,
“Quantifying nanoscale charge density features of contact-charged surfaces with
an FEM/KPFM-hybrid approach,” Physical Review Materials, vol. 6, no. 12.
American Physical Society, 2022.
ista: Pertl F, Sobarzo Ponce JCA, Shafeek LB, Cramer T, Waitukaitis SR. 2022. Quantifying
nanoscale charge density features of contact-charged surfaces with an FEM/KPFM-hybrid
approach. Physical Review Materials. 6(12), 125605.
mla: Pertl, Felix, et al. “Quantifying Nanoscale Charge Density Features of Contact-Charged
Surfaces with an FEM/KPFM-Hybrid Approach.” Physical Review Materials,
vol. 6, no. 12, 125605, American Physical Society, 2022, doi:10.1103/PhysRevMaterials.6.125605.
short: F. Pertl, J.C.A. Sobarzo Ponce, L.B. Shafeek, T. Cramer, S.R. Waitukaitis,
Physical Review Materials 6 (2022).
date_created: 2023-01-08T23:00:53Z
date_published: 2022-12-29T00:00:00Z
date_updated: 2023-08-03T14:11:29Z
day: '29'
department:
- _id: ScWa
- _id: NanoFab
doi: 10.1103/PhysRevMaterials.6.125605
ec_funded: 1
external_id:
arxiv:
- '2209.01889'
isi:
- '000908384800001'
intvolume: ' 6'
isi: 1
issue: '12'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: ' https://doi.org/10.48550/arXiv.2209.01889'
month: '12'
oa: 1
oa_version: Preprint
project:
- _id: 0aa60e99-070f-11eb-9043-a6de6bdc3afa
call_identifier: H2020
grant_number: '949120'
name: 'Tribocharge: a multi-scale approach to an enduring problem in physics'
publication: Physical Review Materials
publication_identifier:
eissn:
- 2475-9953
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Quantifying nanoscale charge density features of contact-charged surfaces with
an FEM/KPFM-hybrid approach
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 6
year: '2022'
...
---
_id: '9411'
abstract:
- lang: eng
text: The dynamics of a triangular magnetocapillary swimmer is studied using the
lattice Boltzmann method. We extend on our previous work, which deals with the
self-assembly and a specific type of the swimmer motion characterized by the swimmer’s
maximum velocity centred around the particle’s inverse viscous time. Here, we
identify additional regimes of motion. First, modifying the ratio of surface tension
and magnetic forces allows to study the swimmer propagation in the regime of significantly
lower frequencies mainly defined by the strength of the magnetocapillary potential.
Second, introducing a constant magnetic contribution in each of the particles
in addition to their magnetic moment induced by external fields leads to another
regime characterized by strong in-plane swimmer reorientations that resemble experimental
observations.
acknowledgement: This work was financially supported by the DFG Priority Programme
SPP 1726 “Microswimmers–From Single Particle Motion to Collective Behaviour” (HA
4382/5-1). We further acknowledge the Jülich Supercomputing Centre (JSC) and the
High Performance Computing Centre Stuttgart (HLRS) for the allocation of computing
time.
article_number: '59'
article_processing_charge: No
author:
- first_name: Alexander
full_name: Sukhov, Alexander
last_name: Sukhov
- first_name: Maxime
full_name: Hubert, Maxime
last_name: Hubert
- first_name: Galien M
full_name: Grosjean, Galien M
id: 0C5FDA4A-9CF6-11E9-8939-FF05E6697425
last_name: Grosjean
orcid: 0000-0001-5154-417X
- first_name: Oleg
full_name: Trosman, Oleg
last_name: Trosman
- first_name: Sebastian
full_name: Ziegler, Sebastian
last_name: Ziegler
- first_name: Ylona
full_name: Collard, Ylona
last_name: Collard
- first_name: Nicolas
full_name: Vandewalle, Nicolas
last_name: Vandewalle
- first_name: Ana Sunčana
full_name: Smith, Ana Sunčana
last_name: Smith
- first_name: Jens
full_name: Harting, Jens
last_name: Harting
citation:
ama: Sukhov A, Hubert M, Grosjean GM, et al. Regimes of motion of magnetocapillary
swimmers. European Physical Journal E. 2021;44(4). doi:10.1140/epje/s10189-021-00065-2
apa: Sukhov, A., Hubert, M., Grosjean, G. M., Trosman, O., Ziegler, S., Collard,
Y., … Harting, J. (2021). Regimes of motion of magnetocapillary swimmers. European
Physical Journal E. Springer. https://doi.org/10.1140/epje/s10189-021-00065-2
chicago: Sukhov, Alexander, Maxime Hubert, Galien M Grosjean, Oleg Trosman, Sebastian
Ziegler, Ylona Collard, Nicolas Vandewalle, Ana Sunčana Smith, and Jens Harting.
“Regimes of Motion of Magnetocapillary Swimmers.” European Physical Journal
E. Springer, 2021. https://doi.org/10.1140/epje/s10189-021-00065-2.
ieee: A. Sukhov et al., “Regimes of motion of magnetocapillary swimmers,”
European Physical Journal E, vol. 44, no. 4. Springer, 2021.
ista: Sukhov A, Hubert M, Grosjean GM, Trosman O, Ziegler S, Collard Y, Vandewalle
N, Smith AS, Harting J. 2021. Regimes of motion of magnetocapillary swimmers.
European Physical Journal E. 44(4), 59.
mla: Sukhov, Alexander, et al. “Regimes of Motion of Magnetocapillary Swimmers.”
European Physical Journal E, vol. 44, no. 4, 59, Springer, 2021, doi:10.1140/epje/s10189-021-00065-2.
short: A. Sukhov, M. Hubert, G.M. Grosjean, O. Trosman, S. Ziegler, Y. Collard,
N. Vandewalle, A.S. Smith, J. Harting, European Physical Journal E 44 (2021).
date_created: 2021-05-23T22:01:44Z
date_published: 2021-04-24T00:00:00Z
date_updated: 2023-08-08T13:36:28Z
day: '24'
ddc:
- '530'
department:
- _id: ScWa
doi: 10.1140/epje/s10189-021-00065-2
external_id:
isi:
- '000643251300001'
file:
- access_level: open_access
checksum: 0ef342d011afbe3c5cb058fda9a3f395
content_type: application/pdf
creator: kschuh
date_created: 2021-05-25T11:32:14Z
date_updated: 2021-05-25T11:32:14Z
file_id: '9422'
file_name: 2021_EPJE_Sukhov.pdf
file_size: 2507870
relation: main_file
success: 1
file_date_updated: 2021-05-25T11:32:14Z
has_accepted_license: '1'
intvolume: ' 44'
isi: 1
issue: '4'
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
publication: European Physical Journal E
publication_identifier:
eissn:
- 1292895X
issn:
- '12928941'
publication_status: published
publisher: Springer
quality_controlled: '1'
scopus_import: '1'
status: public
title: Regimes of motion of magnetocapillary swimmers
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: 44
year: '2021'
...
---
_id: '8036'
abstract:
- lang: eng
text: When tiny soft ferromagnetic particles are placed along a liquid interface
and exposed to a vertical magnetic field, the balance between capillary attraction
and magnetic repulsion leads to self-organization into well-defined patterns.
Here, we demonstrate experimentally that precessing magnetic fields induce metachronal
waves on the periphery of these assemblies, similar to the ones observed in ciliates
and some arthropods. The outermost layer of particles behaves like an array of
cilia or legs whose sequential movement causes a net and controllable locomotion.
This bioinspired many-particle swimming strategy is effective even at low Reynolds
number, using only spatially uniform fields to generate the waves.
article_number: '112'
article_processing_charge: No
article_type: original
author:
- first_name: Ylona
full_name: Collard, Ylona
last_name: Collard
- first_name: Galien M
full_name: Grosjean, Galien M
id: 0C5FDA4A-9CF6-11E9-8939-FF05E6697425
last_name: Grosjean
orcid: 0000-0001-5154-417X
- first_name: Nicolas
full_name: Vandewalle, Nicolas
last_name: Vandewalle
citation:
ama: Collard Y, Grosjean GM, Vandewalle N. Magnetically powered metachronal waves
induce locomotion in self-assemblies. Communications Physics. 2020;3. doi:10.1038/s42005-020-0380-9
apa: Collard, Y., Grosjean, G. M., & Vandewalle, N. (2020). Magnetically powered
metachronal waves induce locomotion in self-assemblies. Communications Physics.
Springer Nature. https://doi.org/10.1038/s42005-020-0380-9
chicago: Collard, Ylona, Galien M Grosjean, and Nicolas Vandewalle. “Magnetically
Powered Metachronal Waves Induce Locomotion in Self-Assemblies.” Communications
Physics. Springer Nature, 2020. https://doi.org/10.1038/s42005-020-0380-9.
ieee: Y. Collard, G. M. Grosjean, and N. Vandewalle, “Magnetically powered metachronal
waves induce locomotion in self-assemblies,” Communications Physics, vol.
3. Springer Nature, 2020.
ista: Collard Y, Grosjean GM, Vandewalle N. 2020. Magnetically powered metachronal
waves induce locomotion in self-assemblies. Communications Physics. 3, 112.
mla: Collard, Ylona, et al. “Magnetically Powered Metachronal Waves Induce Locomotion
in Self-Assemblies.” Communications Physics, vol. 3, 112, Springer Nature,
2020, doi:10.1038/s42005-020-0380-9.
short: Y. Collard, G.M. Grosjean, N. Vandewalle, Communications Physics 3 (2020).
date_created: 2020-06-29T07:59:35Z
date_published: 2020-06-19T00:00:00Z
date_updated: 2023-08-22T07:47:30Z
day: '19'
ddc:
- '530'
department:
- _id: ScWa
doi: 10.1038/s42005-020-0380-9
ec_funded: 1
external_id:
isi:
- '000543328000002'
file:
- access_level: open_access
checksum: ed984f7a393f19140b5279a54a3336ad
content_type: application/pdf
creator: cziletti
date_created: 2020-06-29T13:21:24Z
date_updated: 2020-07-14T12:48:08Z
file_id: '8045'
file_name: 2020_CommunicationsPhysics_Collard.pdf
file_size: 1907821
relation: main_file
file_date_updated: 2020-07-14T12:48:08Z
has_accepted_license: '1'
intvolume: ' 3'
isi: 1
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Communications Physics
publication_identifier:
eissn:
- '23993650'
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Magnetically powered metachronal waves induce locomotion in self-assemblies
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: 3
year: '2020'
...
---
_id: '8101'
abstract:
- lang: eng
text: By rigorously accounting for mesoscale spatial correlations in donor/acceptor
surface properties, we develop a scale-spanning model for same-material tribocharging.
We find that mesoscale correlations affect not only the magnitude of charge transfer
but also the fluctuations—suppressing otherwise overwhelming charge-transfer variability
that is not observed experimentally. We furthermore propose a generic theoretical
mechanism by which the mesoscale features might emerge, which is qualitatively
consistent with other proposals in the literature.
acknowledgement: "We would like to thank Philip Born, Bartosz Grzybowski, Tarik Baytekin,
and Bilge Baytekin for helpful discussions.\r\nThis project has received funding
from the European Unions Horizon 2020 research and innovation programme under the
Marie Skłodowska-Curie Grant Agreement No. 754411."
article_number: '082602'
article_processing_charge: Yes
article_type: original
author:
- first_name: Galien M
full_name: Grosjean, Galien M
id: 0C5FDA4A-9CF6-11E9-8939-FF05E6697425
last_name: Grosjean
orcid: 0000-0001-5154-417X
- first_name: Sebastian
full_name: Wald, Sebastian
id: 133F200A-B015-11E9-AD41-0EDAE5697425
last_name: Wald
- first_name: Juan Carlos A
full_name: Sobarzo Ponce, Juan Carlos A
id: 4B807D68-AE37-11E9-AC72-31CAE5697425
last_name: Sobarzo Ponce
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
citation:
ama: Grosjean GM, Wald S, Sobarzo Ponce JCA, Waitukaitis SR. Quantitatively consistent
scale-spanning model for same-material tribocharging. Physical Review Materials.
2020;4(8). doi:10.1103/PhysRevMaterials.4.082602
apa: Grosjean, G. M., Wald, S., Sobarzo Ponce, J. C. A., & Waitukaitis, S. R.
(2020). Quantitatively consistent scale-spanning model for same-material tribocharging.
Physical Review Materials. American Physical Society. https://doi.org/10.1103/PhysRevMaterials.4.082602
chicago: Grosjean, Galien M, Sebastian Wald, Juan Carlos A Sobarzo Ponce, and Scott
R Waitukaitis. “Quantitatively Consistent Scale-Spanning Model for Same-Material
Tribocharging.” Physical Review Materials. American Physical Society, 2020.
https://doi.org/10.1103/PhysRevMaterials.4.082602.
ieee: G. M. Grosjean, S. Wald, J. C. A. Sobarzo Ponce, and S. R. Waitukaitis, “Quantitatively
consistent scale-spanning model for same-material tribocharging,” Physical
Review Materials, vol. 4, no. 8. American Physical Society, 2020.
ista: Grosjean GM, Wald S, Sobarzo Ponce JCA, Waitukaitis SR. 2020. Quantitatively
consistent scale-spanning model for same-material tribocharging. Physical Review
Materials. 4(8), 082602.
mla: Grosjean, Galien M., et al. “Quantitatively Consistent Scale-Spanning Model
for Same-Material Tribocharging.” Physical Review Materials, vol. 4, no.
8, 082602, American Physical Society, 2020, doi:10.1103/PhysRevMaterials.4.082602.
short: G.M. Grosjean, S. Wald, J.C.A. Sobarzo Ponce, S.R. Waitukaitis, Physical
Review Materials 4 (2020).
date_created: 2020-07-07T11:33:54Z
date_published: 2020-08-17T00:00:00Z
date_updated: 2023-08-22T08:41:32Z
day: '17'
ddc:
- '530'
department:
- _id: ScWa
doi: 10.1103/PhysRevMaterials.4.082602
ec_funded: 1
external_id:
arxiv:
- '2006.07120'
isi:
- '000561897000001'
file:
- access_level: open_access
checksum: 288fef1eeb6540c6344bb8f7c8159dc9
content_type: application/pdf
creator: ggrosjea
date_created: 2020-08-17T15:54:20Z
date_updated: 2020-08-17T15:54:20Z
file_id: '8277'
file_name: Grosjean2020.pdf
file_size: 853753
relation: main_file
success: 1
file_date_updated: 2020-08-17T15:54:20Z
has_accepted_license: '1'
intvolume: ' 4'
isi: 1
issue: '8'
keyword:
- electric charge
- tribocharging
- soft matter
- granular materials
- polymers
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
project:
- _id: 260C2330-B435-11E9-9278-68D0E5697425
call_identifier: H2020
grant_number: '754411'
name: ISTplus - Postdoctoral Fellowships
publication: Physical Review Materials
publication_identifier:
issn:
- 2475-9953
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '12697'
relation: popular_science
status: public
scopus_import: '1'
status: public
title: Quantitatively consistent scale-spanning model for same-material tribocharging
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: 4
year: '2020'
...
---
_id: '6763'
abstract:
- lang: eng
text: "When grape-sized aqueous dimers are irradiated in a microwave oven, an intense
electromagnetic hotspot forms at their point of contact, often igniting a plasma.
Here we show that this irradiation can result in the injection of mechanical energy.
By examining irradiated hydrogel dimers through high-speed imaging, we find that
they repeatedly bounce off of each other while irradiated. We determine that an
average of 1 lJ of mechanical energy is injected into the pair during each collision.
Furthermore, a characteristic high-pitched audio signal is found to accompany
each collision.\r\nWe show that both the audio signal and the energy injection
arise via an interplay between vaporization and elastic deformations in the region
of contact, the so-called ‘elastic Liedenfrost effect’. Our results establish
a novel, non-contact method of injecting mechanical energy into soft matter systems,
suggesting application in fields such as soft robotics."
article_processing_charge: No
article_type: original
author:
- first_name: Hamza K.
full_name: Khattak, Hamza K.
last_name: Khattak
- first_name: Scott R
full_name: Waitukaitis, Scott R
id: 3A1FFC16-F248-11E8-B48F-1D18A9856A87
last_name: Waitukaitis
orcid: 0000-0002-2299-3176
- first_name: Aaron D.
full_name: Slepkov, Aaron D.
last_name: Slepkov
citation:
ama: Khattak HK, Waitukaitis SR, Slepkov AD. Microwave induced mechanical activation
of hydrogel dimers. Soft Matter. 2019;15(29):5804-5809. doi:10.1039/c9sm00756c
apa: Khattak, H. K., Waitukaitis, S. R., & Slepkov, A. D. (2019). Microwave
induced mechanical activation of hydrogel dimers. Soft Matter. Royal Society
of Chemistry. https://doi.org/10.1039/c9sm00756c
chicago: Khattak, Hamza K., Scott R Waitukaitis, and Aaron D. Slepkov. “Microwave
Induced Mechanical Activation of Hydrogel Dimers.” Soft Matter. Royal Society
of Chemistry, 2019. https://doi.org/10.1039/c9sm00756c.
ieee: H. K. Khattak, S. R. Waitukaitis, and A. D. Slepkov, “Microwave induced mechanical
activation of hydrogel dimers,” Soft Matter, vol. 15, no. 29. Royal Society
of Chemistry, pp. 5804–5809, 2019.
ista: Khattak HK, Waitukaitis SR, Slepkov AD. 2019. Microwave induced mechanical
activation of hydrogel dimers. Soft Matter. 15(29), 5804–5809.
mla: Khattak, Hamza K., et al. “Microwave Induced Mechanical Activation of Hydrogel
Dimers.” Soft Matter, vol. 15, no. 29, Royal Society of Chemistry, 2019,
pp. 5804–09, doi:10.1039/c9sm00756c.
short: H.K. Khattak, S.R. Waitukaitis, A.D. Slepkov, Soft Matter 15 (2019) 5804–5809.
date_created: 2019-08-04T21:59:21Z
date_published: 2019-07-15T00:00:00Z
date_updated: 2023-08-29T06:53:34Z
day: '15'
department:
- _id: ScWa
doi: 10.1039/c9sm00756c
external_id:
isi:
- '000476909200002'
pmid:
- '31305853'
intvolume: ' 15'
isi: 1
issue: '29'
language:
- iso: eng
month: '07'
oa_version: None
page: 5804-5809
pmid: 1
publication: Soft Matter
publication_identifier:
eissn:
- '17446848'
issn:
- 1744683X
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Microwave induced mechanical activation of hydrogel dimers
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 15
year: '2019'
...