{"ec_funded":1,"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. ","day":"13","quality_controlled":"1","intvolume":"         7","date_updated":"2023-08-02T06:34:47Z","status":"public","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."}],"article_type":"original","has_accepted_license":"1","external_id":{"arxiv":["2304.12861"],"isi":["001019565900002"]},"volume":7,"isi":1,"project":[{"name":"Tribocharge: a multi-scale approach to an enduring problem in physics","_id":"0aa60e99-070f-11eb-9043-a6de6bdc3afa","grant_number":"949120","call_identifier":"H2020"},{"call_identifier":"H2020","grant_number":"754411","name":"ISTplus - Postdoctoral Fellowships","_id":"260C2330-B435-11E9-9278-68D0E5697425"}],"user_id":"4359f0d1-fa6c-11eb-b949-802e58b17ae8","department":[{"_id":"ScWa"}],"file_date_updated":"2023-07-07T12:49:51Z","language":[{"iso":"eng"}],"author":[{"full_name":"Grosjean, Galien M","first_name":"Galien M","orcid":"0000-0001-5154-417X","id":"0C5FDA4A-9CF6-11E9-8939-FF05E6697425","last_name":"Grosjean"},{"full_name":"Waitukaitis, Scott R","orcid":"0000-0002-2299-3176","first_name":"Scott R","last_name":"Waitukaitis","id":"3A1FFC16-F248-11E8-B48F-1D18A9856A87"}],"file":[{"checksum":"75584730d9cdd50eeccb4c52c509776d","creator":"ggrosjea","access_level":"open_access","success":1,"file_id":"13198","relation":"main_file","content_type":"application/pdf","date_updated":"2023-07-07T12:49:51Z","date_created":"2023-07-07T12:49:51Z","file_name":"Mosaic_asymmetries.pdf","file_size":1127040}],"year":"2023","ddc":["537"],"article_processing_charge":"No","date_published":"2023-06-13T00:00:00Z","publication":"Physical Review Materials","article_number":"065601","date_created":"2023-07-07T12:48:01Z","keyword":["Physics and Astronomy (miscellaneous)","General Materials Science"],"oa_version":"Submitted Version","type":"journal_article","citation":{"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>.","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.","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>","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.","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>","short":"G.M. Grosjean, S.R. Waitukaitis, Physical Review Materials 7 (2023)."},"_id":"13197","doi":"10.1103/physrevmaterials.7.065601","publication_identifier":{"issn":["2475-9953"]},"issue":"6","month":"06","title":"Asymmetries in triboelectric charging: Generalizing mosaic models to different-material samples and sliding contacts","publication_status":"published","publisher":"American Physical Society","oa":1}