{"status":"public","title":"Mixtures of self-propelled particles interacting with asymmetric obstacles","quality_controlled":"1","scopus_import":"1","publisher":"Springer Nature","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2023-10-22T22:01:13Z","oa_version":"None","abstract":[{"text":"In the presence of an obstacle, active particles condensate into a surface “wetting” layer due to persistent motion. If the obstacle is asymmetric, a rectification current arises in addition to wetting. Asymmetric geometries are therefore commonly used to concentrate microorganisms like bacteria and sperms. However, most studies neglect the fact that biological active matter is diverse, composed of individuals with distinct self-propulsions. Using simulations, we study a mixture of “fast” and “slow” active Brownian disks in two dimensions interacting with large half-disk obstacles. With this prototypical obstacle geometry, we analyze how the stationary collective behavior depends on the degree of self-propulsion “diversity,” defined as proportional to the difference between the self-propulsion speeds, while keeping the average self-propulsion speed fixed. A wetting layer rich in fast particles arises. The rectification current is amplified by speed diversity due to a superlinear dependence of rectification on self-propulsion speed, which arises from cooperative effects. Thus, the total rectification current cannot be obtained from an effective one-component active fluid with the same average self-propulsion speed, highlighting the importance of considering diversity in active matter.","lang":"eng"}],"department":[{"_id":"AnSa"}],"issue":"10","date_published":"2023-10-01T00:00:00Z","publication_status":"published","pmid":1,"date_updated":"2023-10-31T11:16:41Z","article_processing_charge":"No","month":"10","day":"01","type":"journal_article","acknowledgement":"MR-V and RS are supported by Fondecyt Grant No. 1220536 and Millennium Science Initiative Program NCN19_170D of ANID, Chile. P.d.C. was supported by Scholarships Nos. 2021/10139-2 and 2022/13872-5 and ICTP-SAIFR Grant No. 2021/14335-0, all granted by São Paulo Research Foundation (FAPESP), Brazil.","year":"2023","volume":46,"intvolume":"        46","article_number":"95","_id":"14442","language":[{"iso":"eng"}],"citation":{"short":"M.N. Rojas Vega, P. De Castro, R. Soto, The European Physical Journal E 46 (2023).","ama":"Rojas Vega MN, De Castro P, Soto R. Mixtures of self-propelled particles interacting with asymmetric obstacles. <i>The European Physical Journal E</i>. 2023;46(10). doi:<a href=\"https://doi.org/10.1140/epje/s10189-023-00354-y\">10.1140/epje/s10189-023-00354-y</a>","ista":"Rojas Vega MN, De Castro P, Soto R. 2023. Mixtures of self-propelled particles interacting with asymmetric obstacles. The European Physical Journal E. 46(10), 95.","apa":"Rojas Vega, M. N., De Castro, P., &#38; Soto, R. (2023). Mixtures of self-propelled particles interacting with asymmetric obstacles. <i>The European Physical Journal E</i>. Springer Nature. <a href=\"https://doi.org/10.1140/epje/s10189-023-00354-y\">https://doi.org/10.1140/epje/s10189-023-00354-y</a>","chicago":"Rojas Vega, Mauricio Nicolas, Pablo De Castro, and Rodrigo Soto. “Mixtures of Self-Propelled Particles Interacting with Asymmetric Obstacles.” <i>The European Physical Journal E</i>. Springer Nature, 2023. <a href=\"https://doi.org/10.1140/epje/s10189-023-00354-y\">https://doi.org/10.1140/epje/s10189-023-00354-y</a>.","ieee":"M. N. Rojas Vega, P. De Castro, and R. Soto, “Mixtures of self-propelled particles interacting with asymmetric obstacles,” <i>The European Physical Journal E</i>, vol. 46, no. 10. Springer Nature, 2023.","mla":"Rojas Vega, Mauricio Nicolas, et al. “Mixtures of Self-Propelled Particles Interacting with Asymmetric Obstacles.” <i>The European Physical Journal E</i>, vol. 46, no. 10, 95, Springer Nature, 2023, doi:<a href=\"https://doi.org/10.1140/epje/s10189-023-00354-y\">10.1140/epje/s10189-023-00354-y</a>."},"article_type":"original","publication_identifier":{"eissn":["1292-895X"],"issn":["1292-8941"]},"external_id":{"pmid":["37819444"]},"author":[{"first_name":"Mauricio Nicolas","last_name":"Rojas Vega","full_name":"Rojas Vega, Mauricio Nicolas","id":"441e7207-f91f-11ec-b67c-9e6fe3d8fd6d"},{"last_name":"De Castro","first_name":"Pablo","full_name":"De Castro, Pablo"},{"full_name":"Soto, Rodrigo","last_name":"Soto","first_name":"Rodrigo"}],"publication":"The European Physical Journal E","doi":"10.1140/epje/s10189-023-00354-y"}