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@ARTICLE{AbaurreaVelasco:867555,
author = {Abaurrea-Velasco, Clara and Auth, Thorsten and Gompper,
Gerhard},
title = {{V}esicles with internal active filaments: self-organized
propulsion controls shape, motility, and dynamical response},
journal = {New journal of physics},
volume = {21},
issn = {1367-2630},
address = {[London]},
publisher = {IOP},
reportid = {FZJ-2019-06178},
pages = {123024},
year = {2019},
abstract = {Self-propulsion and navigation due to the sensing of
environmental conditions --- such as durotaxis and
chemotaxis --- are remarkable properties of biological cells
that cannot be modeled by single-component self-propelled
particles. Therefore, we introduce and study "flexocytes",
deformable vesicles with enclosed attached self-propelled
pushing and pulling filaments that align due to steric and
membrane-mediated interactions. Using computer simulations
in two dimensions, we show that the membrane deforms under
the propulsion forces and forms shapes mimicking motile
biological cells, such as keratocytes and neutrophils. When
interacting with walls or with interfaces between different
substrates, the internal structure of a flexocyte
reorganizes, resulting in a preferred angle of reflection or
deflection, respectively. We predict a correlation between
motility patterns, shapes, characteristics of the internal
forces, and the response to micropatterned substrates and
external stimuli. We propose that engineered flexocytes with
desired mechanosensitive capabilities enable the
construction of soft-matter microbots.},
cin = {ICS-2 / JARA-HPC},
ddc = {530},
cid = {I:(DE-Juel1)ICS-2-20110106 / $I:(DE-82)080012_20140620$},
pnm = {553 - Physical Basis of Diseases (POF3-553) / Hydrodynamics
of Active Biological Systems $(jiff26_20110501)$},
pid = {G:(DE-HGF)POF3-553 / $G:(DE-Juel1)jiff26_20110501$},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000513663400023},
doi = {10.1088/1367-2630/ab5c70},
url = {https://juser.fz-juelich.de/record/867555},
}