[{"type":"conference_abstract","year":"2023","publisher":"European Geosciences Union","doi":"10.5194/egusphere-egu23-6166","language":[{"iso":"eng"}],"date_published":"2023-04-23T00:00:00Z","_id":"14864","oa":1,"author":[{"first_name":"Andrea","full_name":"Stöllner, Andrea","orcid":"0000-0002-0464-8440","id":"4bdcf7f6-eb97-11eb-a6c2-9981bbdc3bed","last_name":"Stöllner"},{"orcid":"0000-0002-5010-6984","last_name":"Lenton","id":"a550210f-223c-11ec-8182-e2d45e817efb","full_name":"Lenton, Isaac C","first_name":"Isaac C"},{"full_name":"Muller, Caroline J","first_name":"Caroline J","orcid":"0000-0001-5836-5350","id":"f978ccb0-3f7f-11eb-b193-b0e2bd13182b","last_name":"Muller"},{"orcid":"0000-0002-2299-3176","last_name":"Waitukaitis","id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87","first_name":"Scott R","full_name":"Waitukaitis, Scott R"}],"conference":{"location":"Vienna, Austria & Virtual","name":"EGU General Assembly","start_date":"2023-04-23","end_date":"2023-04-28"},"file_date_updated":"2024-01-23T13:00:26Z","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","ddc":["530"],"acknowledgement":"This project has received funding from the European Research Council (ERC) under the European Union’s Starting Grant (No. 949120).","department":[{"_id":"CaMu"},{"_id":"ScWa"}],"date_created":"2024-01-22T12:09:07Z","article_number":"6166","month":"04","license":"https://creativecommons.org/licenses/by/4.0/","status":"public","date_updated":"2024-01-24T11:21:42Z","ec_funded":1,"day":"23","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"publication_status":"published","oa_version":"Published Version","has_accepted_license":"1","citation":{"ama":"Stöllner A, Lenton IC, Muller CJ, Waitukaitis SR. Measuring spontaneous charging of single aerosol particles. In: <i>EGU General Assembly 2023</i>. European Geosciences Union; 2023. doi:<a href=\"https://doi.org/10.5194/egusphere-egu23-6166\">10.5194/egusphere-egu23-6166</a>","apa":"Stöllner, A., Lenton, I. C., Muller, C. J., &#38; Waitukaitis, S. R. (2023). Measuring spontaneous charging of single aerosol particles. In <i>EGU General Assembly 2023</i>. Vienna, Austria &#38; Virtual: European Geosciences Union. <a href=\"https://doi.org/10.5194/egusphere-egu23-6166\">https://doi.org/10.5194/egusphere-egu23-6166</a>","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.” <i>EGU General Assembly 2023</i>, 6166, European Geosciences Union, 2023, doi:<a href=\"https://doi.org/10.5194/egusphere-egu23-6166\">10.5194/egusphere-egu23-6166</a>.","short":"A. Stöllner, I.C. Lenton, C.J. Muller, S.R. Waitukaitis, in:, EGU General Assembly 2023, European Geosciences Union, 2023.","ieee":"A. Stöllner, I. C. Lenton, C. J. Muller, and S. R. Waitukaitis, “Measuring spontaneous charging of single aerosol particles,” in <i>EGU General Assembly 2023</i>, Vienna, Austria &#38; Virtual, 2023.","chicago":"Stöllner, Andrea, Isaac C Lenton, Caroline J Muller, and Scott R Waitukaitis. “Measuring Spontaneous Charging of Single Aerosol Particles.” In <i>EGU General Assembly 2023</i>. European Geosciences Union, 2023. <a href=\"https://doi.org/10.5194/egusphere-egu23-6166\">https://doi.org/10.5194/egusphere-egu23-6166</a>."},"project":[{"grant_number":"949120","call_identifier":"H2020","_id":"0aa60e99-070f-11eb-9043-a6de6bdc3afa","name":"Tribocharge: a multi-scale approach to an enduring problem in physics"}],"title":"Measuring spontaneous charging of single aerosol particles","file":[{"access_level":"open_access","content_type":"application/pdf","relation":"main_file","creator":"dernst","file_id":"14880","date_created":"2024-01-23T13:00:26Z","checksum":"8d6ddbb359e584b156f991f00196d86b","success":1,"date_updated":"2024-01-23T13:00:26Z","file_name":"2023_EGU_Stoellner.pdf","file_size":419736}],"publication":"EGU General Assembly 2023"},{"status":"public","date_updated":"2023-08-02T06:34:47Z","day":"13","publication_status":"published","oa_version":"Submitted Version","abstract":[{"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.","lang":"eng"}],"ec_funded":1,"issue":"6","has_accepted_license":"1","arxiv":1,"citation":{"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.","short":"G.M. Grosjean, S.R. Waitukaitis, Physical Review Materials 7 (2023).","mla":"Grosjean, Galien M., and Scott R. Waitukaitis. “Asymmetries in Triboelectric Charging: Generalizing Mosaic Models to Different-Material Samples and Sliding Contacts.” <i>Physical Review Materials</i>, vol. 7, no. 6, 065601, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/physrevmaterials.7.065601\">10.1103/physrevmaterials.7.065601</a>.","apa":"Grosjean, G. M., &#38; Waitukaitis, S. R. (2023). Asymmetries in triboelectric charging: Generalizing mosaic models to different-material samples and sliding contacts. <i>Physical Review Materials</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevmaterials.7.065601\">https://doi.org/10.1103/physrevmaterials.7.065601</a>","ama":"Grosjean GM, Waitukaitis SR. Asymmetries in triboelectric charging: Generalizing mosaic models to different-material samples and sliding contacts. <i>Physical Review Materials</i>. 2023;7(6). doi:<a href=\"https://doi.org/10.1103/physrevmaterials.7.065601\">10.1103/physrevmaterials.7.065601</a>","chicago":"Grosjean, Galien M, and Scott R Waitukaitis. “Asymmetries in Triboelectric Charging: Generalizing Mosaic Models to Different-Material Samples and Sliding Contacts.” <i>Physical Review Materials</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/physrevmaterials.7.065601\">https://doi.org/10.1103/physrevmaterials.7.065601</a>.","ieee":"G. M. Grosjean and S. R. Waitukaitis, “Asymmetries in triboelectric charging: Generalizing mosaic models to different-material samples and sliding contacts,” <i>Physical Review Materials</i>, vol. 7, no. 6. American Physical Society, 2023."},"project":[{"_id":"0aa60e99-070f-11eb-9043-a6de6bdc3afa","name":"Tribocharge: a multi-scale approach to an enduring problem in physics","grant_number":"949120","call_identifier":"H2020"},{"name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","grant_number":"754411"}],"publication":"Physical Review Materials","file":[{"access_level":"open_access","relation":"main_file","content_type":"application/pdf","creator":"ggrosjea","checksum":"75584730d9cdd50eeccb4c52c509776d","file_id":"13198","date_created":"2023-07-07T12:49:51Z","date_updated":"2023-07-07T12:49:51Z","success":1,"file_name":"Mosaic_asymmetries.pdf","file_size":1127040}],"title":"Asymmetries in triboelectric charging: Generalizing mosaic models to different-material samples and sliding contacts","external_id":{"arxiv":["2304.12861"],"isi":["001019565900002"]},"type":"journal_article","doi":"10.1103/physrevmaterials.7.065601","language":[{"iso":"eng"}],"year":"2023","publisher":"American Physical Society","date_published":"2023-06-13T00:00:00Z","author":[{"full_name":"Grosjean, Galien M","first_name":"Galien M","orcid":"0000-0001-5154-417X","last_name":"Grosjean","id":"0C5FDA4A-9CF6-11E9-8939-FF05E6697425"},{"full_name":"Waitukaitis, Scott R","first_name":"Scott R","orcid":"0000-0002-2299-3176","id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87","last_name":"Waitukaitis"}],"_id":"13197","oa":1,"file_date_updated":"2023-07-07T12:49:51Z","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","ddc":["537"],"article_processing_charge":"No","intvolume":"         7","keyword":["Physics and Astronomy (miscellaneous)","General Materials Science"],"article_number":"065601","date_created":"2023-07-07T12:48:01Z","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. ","department":[{"_id":"ScWa"}],"isi":1,"article_type":"original","volume":7,"month":"06","publication_identifier":{"issn":["2475-9953"]},"quality_controlled":"1"},{"publication_status":"published","oa_version":"Preprint","tmp":{"legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","image":"/images/cc_by.png","name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","short":"CC BY (4.0)"},"day":"03","ec_funded":1,"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."}],"date_updated":"2023-08-22T08:41:32Z","status":"public","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/2211.02488"}],"publication":"Physical Review Letters","external_id":{"isi":["000946178200008"],"arxiv":["2211.02488"]},"related_material":{"record":[{"status":"public","id":"8101","relation":"research_paper"}]},"file":[{"creator":"ggrosjea","content_type":"application/pdf","relation":"main_file","access_level":"open_access","file_size":2301864,"file_name":"Main_Preprint.pdf","success":1,"date_updated":"2023-02-28T12:20:27Z","date_created":"2023-02-28T12:20:27Z","checksum":"c4f2f6eea0408811f8f4898e15890355","file_id":"12698"},{"date_created":"2023-02-28T12:20:55Z","checksum":"6af6ed6c97a977f923de4162294b43c4","file_id":"12699","success":1,"date_updated":"2023-02-28T12:20:55Z","file_name":"Suppl_info.pdf","file_size":1138625,"access_level":"open_access","content_type":"application/pdf","relation":"main_file","creator":"ggrosjea"},{"success":1,"date_updated":"2023-02-28T12:37:54Z","checksum":"3f20365fb9515bdba3a111d912c8d8b4","file_id":"12700","date_created":"2023-02-28T12:37:54Z","file_size":793449,"file_name":"Suppl_vid1.mp4","content_type":"video/mp4","relation":"main_file","access_level":"open_access","creator":"ggrosjea"},{"file_size":455925,"file_name":"Suppl_vid2.mp4","date_updated":"2023-02-28T12:37:54Z","success":1,"checksum":"90cecacbe0e2f9dea11f91a4ba20c32e","file_id":"12701","date_created":"2023-02-28T12:37:54Z","creator":"ggrosjea","relation":"main_file","content_type":"video/mp4","access_level":"open_access"}],"title":"Single-collision statistics reveal a global mechanism driven by sample history for contact electrification in granular media","project":[{"_id":"0aa60e99-070f-11eb-9043-a6de6bdc3afa","name":"Tribocharge: a multi-scale approach to an enduring problem in physics","call_identifier":"H2020","grant_number":"949120"},{"name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425","call_identifier":"H2020","grant_number":"754411"}],"arxiv":1,"citation":{"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.” <i>Physical Review Letters</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/physrevlett.130.098202\">https://doi.org/10.1103/physrevlett.130.098202</a>.","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,” <i>Physical Review Letters</i>, vol. 130, no. 9. American Physical Society, 2023.","apa":"Grosjean, G. M., &#38; Waitukaitis, S. R. (2023). Single-collision statistics reveal a global mechanism driven by sample history for contact electrification in granular media. <i>Physical Review Letters</i>. American Physical Society. <a href=\"https://doi.org/10.1103/physrevlett.130.098202\">https://doi.org/10.1103/physrevlett.130.098202</a>","short":"G.M. Grosjean, S.R. Waitukaitis, Physical Review Letters 130 (2023).","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.” <i>Physical Review Letters</i>, vol. 130, no. 9, 098202, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/physrevlett.130.098202\">10.1103/physrevlett.130.098202</a>.","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.","ama":"Grosjean GM, Waitukaitis SR. Single-collision statistics reveal a global mechanism driven by sample history for contact electrification in granular media. <i>Physical Review Letters</i>. 2023;130(9). doi:<a href=\"https://doi.org/10.1103/physrevlett.130.098202\">10.1103/physrevlett.130.098202</a>"},"issue":"9","has_accepted_license":"1","author":[{"full_name":"Grosjean, Galien M","first_name":"Galien M","last_name":"Grosjean","id":"0C5FDA4A-9CF6-11E9-8939-FF05E6697425","orcid":"0000-0001-5154-417X"},{"full_name":"Waitukaitis, Scott R","first_name":"Scott R","orcid":"0000-0002-2299-3176","last_name":"Waitukaitis","id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87"}],"oa":1,"_id":"12697","date_published":"2023-03-03T00:00:00Z","language":[{"iso":"eng"}],"doi":"10.1103/physrevlett.130.098202","publisher":"American Physical Society","year":"2023","type":"journal_article","month":"03","quality_controlled":"1","publication_identifier":{"eissn":["1079-7114"],"issn":["0031-9007"]},"isi":1,"article_type":"original","volume":130,"article_number":"098202","date_created":"2023-02-28T12:14:46Z","department":[{"_id":"ScWa"}],"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.","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","ddc":["530","537"],"article_processing_charge":"No","file_date_updated":"2023-02-28T12:37:54Z","keyword":["General Physics","Electrostatics","Triboelectricity","Soft Matter","Acoustic Levitation","Granular Materials"],"intvolume":"       130"},{"project":[{"call_identifier":"H2020","grant_number":"949120","_id":"0aa60e99-070f-11eb-9043-a6de6bdc3afa","name":"Tribocharge: a multi-scale approach to an enduring problem in physics"}],"citation":{"apa":"Mujica, N., &#38; Waitukaitis, S. R. (2023). Accurate determination of the shapes of granular charge distributions. <i>Physical Review E</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevE.107.034901\">https://doi.org/10.1103/PhysRevE.107.034901</a>","mla":"Mujica, Nicolás, and Scott R. Waitukaitis. “Accurate Determination of the Shapes of Granular Charge Distributions.” <i>Physical Review E</i>, vol. 107, no. 3, 034901, American Physical Society, 2023, doi:<a href=\"https://doi.org/10.1103/PhysRevE.107.034901\">10.1103/PhysRevE.107.034901</a>.","short":"N. Mujica, S.R. Waitukaitis, Physical Review E 107 (2023).","ista":"Mujica N, Waitukaitis SR. 2023. Accurate determination of the shapes of granular charge distributions. Physical Review E. 107(3), 034901.","ama":"Mujica N, Waitukaitis SR. Accurate determination of the shapes of granular charge distributions. <i>Physical Review E</i>. 2023;107(3). doi:<a href=\"https://doi.org/10.1103/PhysRevE.107.034901\">10.1103/PhysRevE.107.034901</a>","chicago":"Mujica, Nicolás, and Scott R Waitukaitis. “Accurate Determination of the Shapes of Granular Charge Distributions.” <i>Physical Review E</i>. American Physical Society, 2023. <a href=\"https://doi.org/10.1103/PhysRevE.107.034901\">https://doi.org/10.1103/PhysRevE.107.034901</a>.","ieee":"N. Mujica and S. R. Waitukaitis, “Accurate determination of the shapes of granular charge distributions,” <i>Physical Review E</i>, vol. 107, no. 3. American Physical Society, 2023."},"has_accepted_license":"1","issue":"3","scopus_import":"1","external_id":{"isi":["000992142700001"]},"title":"Accurate determination of the shapes of granular charge distributions","file":[{"access_level":"open_access","relation":"main_file","content_type":"application/pdf","creator":"swaituka","checksum":"48f5dfe4e5f1c46c3c86805cd8f84bea","date_created":"2023-11-27T09:51:48Z","file_id":"14612","date_updated":"2023-11-27T09:51:48Z","success":1,"file_name":"PhysRevE.107.034901 (1).pdf","file_size":1428631}],"publication":"Physical Review E","date_updated":"2023-11-28T09:22:25Z","acknowledged_ssus":[{"_id":"M-Shop"}],"status":"public","ec_funded":1,"abstract":[{"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.","lang":"eng"}],"oa_version":"Published Version","publication_status":"published","day":"01","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.","department":[{"_id":"ScWa"}],"article_number":"034901","date_created":"2023-04-02T22:01:10Z","intvolume":"       107","ddc":["530"],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","article_processing_charge":"No","file_date_updated":"2023-11-27T09:51:48Z","quality_controlled":"1","publication_identifier":{"eissn":["2470-0053"],"issn":["2470-0045"]},"month":"03","volume":107,"article_type":"original","isi":1,"publisher":"American Physical Society","year":"2023","language":[{"iso":"eng"}],"doi":"10.1103/PhysRevE.107.034901","type":"journal_article","oa":1,"_id":"12789","author":[{"last_name":"Mujica","first_name":"Nicolás","full_name":"Mujica, Nicolás"},{"orcid":"0000-0002-2299-3176","last_name":"Waitukaitis","id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87","first_name":"Scott R","full_name":"Waitukaitis, Scott R"}],"date_published":"2023-03-01T00:00:00Z"},{"main_file_link":[{"url":" https://doi.org/10.48550/arXiv.2209.01889","open_access":"1"}],"title":"Quantifying nanoscale charge density features of contact-charged surfaces with an FEM/KPFM-hybrid approach","external_id":{"arxiv":["2209.01889"],"isi":["000908384800001"]},"publication":"Physical Review Materials","citation":{"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,” <i>Physical Review Materials</i>, vol. 6, no. 12. American Physical Society, 2022.","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.” <i>Physical Review Materials</i>. American Physical Society, 2022. <a href=\"https://doi.org/10.1103/PhysRevMaterials.6.125605\">https://doi.org/10.1103/PhysRevMaterials.6.125605</a>.","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. <i>Physical Review Materials</i>. 2022;6(12). doi:<a href=\"https://doi.org/10.1103/PhysRevMaterials.6.125605\">10.1103/PhysRevMaterials.6.125605</a>","apa":"Pertl, F., Sobarzo Ponce, J. C. A., Shafeek, L. B., Cramer, T., &#38; Waitukaitis, S. R. (2022). Quantifying nanoscale charge density features of contact-charged surfaces with an FEM/KPFM-hybrid approach. <i>Physical Review Materials</i>. American Physical Society. <a href=\"https://doi.org/10.1103/PhysRevMaterials.6.125605\">https://doi.org/10.1103/PhysRevMaterials.6.125605</a>","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.","short":"F. Pertl, J.C.A. Sobarzo Ponce, L.B. Shafeek, T. Cramer, S.R. Waitukaitis, Physical Review Materials 6 (2022).","mla":"Pertl, Felix, et al. “Quantifying Nanoscale Charge Density Features of Contact-Charged Surfaces with an FEM/KPFM-Hybrid Approach.” <i>Physical Review Materials</i>, vol. 6, no. 12, 125605, American Physical Society, 2022, doi:<a href=\"https://doi.org/10.1103/PhysRevMaterials.6.125605\">10.1103/PhysRevMaterials.6.125605</a>."},"arxiv":1,"project":[{"call_identifier":"H2020","grant_number":"949120","name":"Tribocharge: a multi-scale approach to an enduring problem in physics","_id":"0aa60e99-070f-11eb-9043-a6de6bdc3afa"}],"scopus_import":"1","issue":"12","abstract":[{"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.","lang":"eng"}],"ec_funded":1,"day":"29","publication_status":"published","oa_version":"Preprint","date_updated":"2023-08-03T14:11:29Z","status":"public","acknowledged_ssus":[{"_id":"M-Shop"},{"_id":"NanoFab"},{"_id":"ScienComp"}],"publication_identifier":{"eissn":["2475-9953"]},"quality_controlled":"1","month":"12","article_type":"original","volume":6,"isi":1,"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.","department":[{"_id":"ScWa"},{"_id":"NanoFab"}],"article_number":"125605","date_created":"2023-01-08T23:00:53Z","intvolume":"         6","user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","article_processing_charge":"No","_id":"12109","oa":1,"author":[{"first_name":"Felix","full_name":"Pertl, Felix","id":"6313aec0-15b2-11ec-abd3-ed67d16139af","last_name":"Pertl"},{"full_name":"Sobarzo Ponce, Juan Carlos A","first_name":"Juan Carlos A","id":"4B807D68-AE37-11E9-AC72-31CAE5697425","last_name":"Sobarzo Ponce"},{"last_name":"Shafeek","id":"3CD37A82-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-7180-6050","first_name":"Lubuna B","full_name":"Shafeek, Lubuna B"},{"first_name":"Tobias","full_name":"Cramer, Tobias","last_name":"Cramer"},{"full_name":"Waitukaitis, Scott R","first_name":"Scott R","id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87","last_name":"Waitukaitis","orcid":"0000-0002-2299-3176"}],"date_published":"2022-12-29T00:00:00Z","year":"2022","publisher":"American Physical Society","doi":"10.1103/PhysRevMaterials.6.125605","language":[{"iso":"eng"}],"type":"journal_article"}]