Analysis of a model microswimmer with applications to blebbing cells and mini-robots
Analysis of a model microswimmer with applications to blebbing cells and mini-robots
复制标题
分析微型游泳器模型及其在起泡细胞和微型机器人中的应用
DOI:
10.1007/s00285-018-1225-y
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发表时间:
2018
影响因子:
1.9
通讯作者:
Othmer, Hans G.
中科院分区:
文献类型:
--
作者:
Wang, Qixuan;Othmer, Hans G.
Recent research has shown that motile cells can adapt their mode of propulsion depending on the environment in which they find themselves. One mode is swimming by blebbing or other shape changes, and in this paper we analyze a class of models for movement of cells by blebbing and of nano-robots in a viscous fluid at low Reynolds number. At the level of individuals, the shape changes comprise volume exchanges between connected spheres that can control their separation, which are simple enough that significant analytical results can be obtained. Our goal is to understand how the efficiency of movement depends on the amplitude and period of the volume exchanges when the spheres approach closely during a cycle. Previous analyses were predicated on wide separation, and we show that the speed increases significantly as the separation decreases due to the strong hydrodynamic interactions between spheres in close proximity. The scallop theorem asserts that at least two degrees of freedom are needed to produce net motion in a cyclic sequence of shape changes, and we show that these degrees can reside in different swimmers whose collective motion is studied. We also show that different combinations of mode sharing can lead to significant differences in the translation and performance of pairs of swimmers.
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影响因子:
3.7
作者:
P. Żuk;E. Wajnryb;K. Mizerski;P. Szymczak
通讯作者:
P. Szymczak
影响因子:
1.9
作者:
Wang, Qixuan;Othmer, Hans G.
通讯作者:
Othmer, Hans G.
影响因子:
8.6
作者:
Underhill, Patrick T.;Hernandez-Ortiz, Juan P.;Graham, Michael D.
通讯作者:
Graham, Michael D.
DOI:
10.1137/siap
发表时间:
2020
期刊:
Jyväskylä studies in education, psychology and social research
影响因子:
--
作者:
김성연
通讯作者:
김성연
DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
Qixuan Wang;Jifeng Hu;H. Othmer
通讯作者:
H. Othmer