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첨단연성물질 연구단
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Bimetallic Microswimmers Speed Up in Confining Channels

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Title
Bimetallic Microswimmers Speed Up in Confining Channels
Author(s)
Chang Liu; Chao Zhou; Wei Wang; H. P. Zhang
Publication Date
2016-11
Journal
PHYSICAL REVIEW LETTERS, v.117, no.19, pp.198001 -
Publisher
AMER PHYSICAL SOC
Abstract
Synthetic microswimmers are envisioned to be useful in numerous applications, many of which occur in tightly confined spaces. It is therefore important to understand how confinement influences swimmer dynamics. Here we study the motility of bimetallic microswimmers in linear and curved channels. Our experiments show swimmer velocities increase, up to 5 times, with the degree of confinement, and the relative velocity increase depends weakly on the fuel concentration and ionic strength in solution. Experimental results are reproduced in a numerical model which attributes the swimmer velocity increase to electrostatic and electrohydrodynamic boundary effects. Our work not only helps to elucidate the confinement effect of phoretic swimmers, but also suggests that spatial confinement may be used as an effective control method for them. © 2016 American Physical Society
URI
http://pr.ibs.re.kr/handle/8788114/3241
DOI
10.1103/PhysRevLett.117.198001
ISSN
0031-9007
Appears in Collections:
Center for Soft and Living Matter(첨단연성물질 연구단) > Journal Papers (저널논문)
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