--- _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' file_name: Suppl_vid1.mp4 file_size: 793449 relation: main_file success: 1 - access_level: open_access 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' ...