Helical and oscillatory microswimmer motility statistics from differential dynamic microscopy
Helical and oscillatory microswimmer motility statistics from differential dynamic microscopy
复制标题
来自微分动态显微镜的螺旋和振荡微型游泳器运动统计
DOI:
10.1088/1367-2630/ab241f
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发表时间:
2019
影响因子:
3.3
通讯作者:
Croze O
中科院分区:
文献类型:
--
作者:
Croze O
The experimental characterisation of the swimming statistics of populations of micro-organisms or artificially propelled particles is essential for understanding the physics of active systems and their exploitation. Here, we construct a theoretical framework to extract information on the three-dimensional motion of micro-swimmers from the intermediate scattering function (ISF) obtained from differential dynamic microscopy (DDM). We derive theoretical expressions for the ISF of helical and oscillatory breaststroke swimmers, and test the theoretical framework by applying it to video sequences generated from simulated swimmers with precisely-controlled dynamics. We then discuss how our theory can be applied to the experimental study of helical swimmers, such as active Janus colloids or suspensions of motile microalgae. In particular, we show how fitting DDM data to a simple, non-helical ISF model can be used to derive three-dimensional helical motility parameters, which can therefore be obtained without specialised 3D microscopy equipment. Finally, we discus how our results aid the study of active matter and describe applications of biological and ecological importance.
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DOI:
10.1063/1.4982820
发表时间:
2016
期刊:
The Review of scientific instruments
影响因子:
--
作者:
T. Darnige;Nuris Figueroa;P. Bohec;A. Lindner;É. Clément
通讯作者:
É. Clément
影响因子:
1.9
作者:
M. Holz;S. H. Chen
通讯作者:
S. H. Chen
影响因子:
27.7
作者:
Goldstein RE
通讯作者:
Goldstein RE
DOI:
10.1103/physrevfluids.1.051201
发表时间:
2015
期刊:
arXiv: Biological Physics
影响因子:
--
作者:
A. Hope;O. A. Croze;W. Poon;M. Bees;M. Haw
通讯作者:
M. Haw
影响因子:
4.4
作者:
P. Pusey;W. Megen
通讯作者:
W. Megen