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Self-Polarizing Microswimmers in Active Density Waves
An artificial microswimmer drifts in response to spatio-temporal modulations of an activating suspension medium. We consider two competing mechanisms capable of influencing its tactic response: angular fluctuations, which help it explore its surroundings and thus diffuse faster toward more active re...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5299513/ https://www.ncbi.nlm.nih.gov/pubmed/28181504 http://dx.doi.org/10.1038/srep41884 |
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author | Geiseler, Alexander Hänggi, Peter Marchesoni, Fabio |
author_facet | Geiseler, Alexander Hänggi, Peter Marchesoni, Fabio |
author_sort | Geiseler, Alexander |
collection | PubMed |
description | An artificial microswimmer drifts in response to spatio-temporal modulations of an activating suspension medium. We consider two competing mechanisms capable of influencing its tactic response: angular fluctuations, which help it explore its surroundings and thus diffuse faster toward more active regions, and self-polarization, a mechanism inherent to self-propulsion, which tends to orient the swimmer’s velocity parallel or antiparallel to the local activation gradients. We investigate, both numerically and analytically, the combined action of such two mechanisms. By determining their relative magnitude, we characterize the selective transport of artificial microswimmers in inhomogeneous activating media. |
format | Online Article Text |
id | pubmed-5299513 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-52995132017-02-13 Self-Polarizing Microswimmers in Active Density Waves Geiseler, Alexander Hänggi, Peter Marchesoni, Fabio Sci Rep Article An artificial microswimmer drifts in response to spatio-temporal modulations of an activating suspension medium. We consider two competing mechanisms capable of influencing its tactic response: angular fluctuations, which help it explore its surroundings and thus diffuse faster toward more active regions, and self-polarization, a mechanism inherent to self-propulsion, which tends to orient the swimmer’s velocity parallel or antiparallel to the local activation gradients. We investigate, both numerically and analytically, the combined action of such two mechanisms. By determining their relative magnitude, we characterize the selective transport of artificial microswimmers in inhomogeneous activating media. Nature Publishing Group 2017-02-09 /pmc/articles/PMC5299513/ /pubmed/28181504 http://dx.doi.org/10.1038/srep41884 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Geiseler, Alexander Hänggi, Peter Marchesoni, Fabio Self-Polarizing Microswimmers in Active Density Waves |
title | Self-Polarizing Microswimmers in Active Density Waves |
title_full | Self-Polarizing Microswimmers in Active Density Waves |
title_fullStr | Self-Polarizing Microswimmers in Active Density Waves |
title_full_unstemmed | Self-Polarizing Microswimmers in Active Density Waves |
title_short | Self-Polarizing Microswimmers in Active Density Waves |
title_sort | self-polarizing microswimmers in active density waves |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5299513/ https://www.ncbi.nlm.nih.gov/pubmed/28181504 http://dx.doi.org/10.1038/srep41884 |
work_keys_str_mv | AT geiseleralexander selfpolarizingmicroswimmersinactivedensitywaves AT hanggipeter selfpolarizingmicroswimmersinactivedensitywaves AT marchesonifabio selfpolarizingmicroswimmersinactivedensitywaves |