期刊
EUROPEAN PHYSICAL JOURNAL B
卷 47, 期 1, 页码 161-164出版社
SPRINGER
DOI: 10.1140/epjb/e2005-00302-5
关键词
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An object consisting of three spheres, linked like the spokes on a wheel, can undergo a net rotational movement when the relative positions of the spheres proceed through a four-step cycle. This rotational motion is the analogue of the two-hinged swimmer originally proposed by Purcell ( 1977), which has served as a prototype for mechanical implementations of swimming. We also note that the rotational motion analysed here may be useful in the design of micromachines and has similarities to molecular-scale rotational motors that have been identified recently.
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