Resonant alignment of microswimmer trajectories in oscillatory shear flows

Resonant alignment of microswimmer trajectories in oscillatory shear flows
复制标题

振荡剪切流中微型游泳器轨迹的共振对准

DOI:
10.1103/physrevfluids.1.051201
复制
发表时间:
2015
期刊:
arXiv: Biological Physics
影响因子:
--
通讯作者:
M. Haw
M. Haw
中科院分区:
--
文献类型:
--
作者:
A. Hope;O. A. Croze;W. Poon;M. Bees;M. Haw

文献摘要

参考文献

被引文献

相似文献

在环境中的游动微生物、工业应用和流变学研究中,通常会经历振荡流动。我们在实验上描述了盐藻对剪切流的响应,并报告了一个令人惊讶的发现:藻类的游动轨迹垂直于剪切面。该排序具有在驱动参数空间中共振的特征。通过一个简单的模型和模拟来定性地再现这种行为,提供了排序的机制和共振幅度和频率的标准。讨论了这项工作对主动振荡流变学和工业藻类加工的意义。
Oscillatory flows are commonly experienced by swimming microorganisms in the environment, industrial applications and rheological investigations. We experimentally characterise the response of the alga {\it Dunaliella salina} to oscillatory shear flows, and report the surprising discovery that algal swimming trajectories orient perpendicular to the flow-shear plane. The ordering has the characteristics of a resonance in the driving parameter space. The behaviour is qualitatively reproduced by a simple model and simulations accounting for helical swimming, providing the mechanism for ordering and criteria for the resonant amplitude and frequency. The implications of this work for active oscillatory rheology and industrial algal processing are discussed.
DOI: 10.1103/revmodphys.85.1143
发表时间: 2013-07-19
影响因子: 44.1
作者:
Marchetti, M. C.;Joanny, J. F.;Simha, R. Aditi
通讯作者: Simha, R. Aditi
DOI: 10.4155/bfs.13.66
发表时间: 2014-01
期刊: Biofuels
影响因子: --
作者:
M. Bees;O. A. Croze
通讯作者: M. Bees;O. A. Croze
DOI: 10.1103/physrevlett.108.218104
发表时间: 2012-05-22
影响因子: 8.6
作者:
Zoettl, Andreas;Stark, Holger
通讯作者: Stark, Holger