Pseudo-Chemotactic Drifts of Artificial Microswimmers
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arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2015
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| _version_ | 1866908490212048896 |
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| author | Ghosh, Pulak K. Li, Yunyun Marchesoni, Fabio Nori, Franco |
| author_facet | Ghosh, Pulak K. Li, Yunyun Marchesoni, Fabio Nori, Franco |
| contents | We numerically investigate the motion of active artificial microswimmers diffusing in a fuel concentration gradient. We observe that, in the steady state, their probability density accumulates in the low-concentration regions, whereas a tagged swimmer drifts with velocity depending in modulus and orientation on how the concentration gradient affects the self-propulsion mechanism. Under most experimentally accessible conditions, the particle drifts toward the high-concentration regions (pseudo-chemotactic drift). A correct interpretation of experimental data must account for such an "anti-Fickian" behavior. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1506_07398 |
| institution | arXiv |
| publishDate | 2015 |
| record_format | arxiv |
| spellingShingle | Pseudo-Chemotactic Drifts of Artificial Microswimmers Ghosh, Pulak K. Li, Yunyun Marchesoni, Fabio Nori, Franco Soft Condensed Matter We numerically investigate the motion of active artificial microswimmers diffusing in a fuel concentration gradient. We observe that, in the steady state, their probability density accumulates in the low-concentration regions, whereas a tagged swimmer drifts with velocity depending in modulus and orientation on how the concentration gradient affects the self-propulsion mechanism. Under most experimentally accessible conditions, the particle drifts toward the high-concentration regions (pseudo-chemotactic drift). A correct interpretation of experimental data must account for such an "anti-Fickian" behavior. |
| title | Pseudo-Chemotactic Drifts of Artificial Microswimmers |
| topic | Soft Condensed Matter |
| url | https://arxiv.org/abs/1506.07398 |