Self-propelled motion switching in nematic liquid crystal droplets in aqueous surfactant solutions

Physical Review. E
Mariko SugaYasuyuki Kimura

Abstract

The self-propelled motions of micron-sized nematic liquid crystal droplets in an aqueous surfactant solution have been studied by tracking individual droplets over long time periods. Switching between self-propelled modes is observed as the droplet size decreases at a nearly constant dissolution rate: from random to helical and then straight motion. The velocity of the droplet decreases with its size for straight and helical motions but is independent of size for random motion. The switching between helical and straight motions is found to be governed by the self-propelled velocity, and is confirmed by experiments at various surfactant concentrations. The helical motion appears along with a shifting of a point defect from the self-propelled direction of the droplet. The critical velocity for this shift of the defect position is found to be related with the Ericksen number, which is defined by the ratio of the viscous and elastic stresses. In a thin cell whose thickness is smaller than that of the initial droplet size, the droplets show more complex trajectories, including "figure-8s" and zigzags. The appearance of those characteristic motions is attributed to autochemotaxis of the droplet.

References

Mar 24, 2005·Physical Review Letters·Yutaka SuminoKenichi Yoshikawa
Aug 11, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Ken NagaiKenichi Yoshikawa
Nov 18, 2005·Journal of Colloid and Interface Science·P D TodorovA Mehreteab
Dec 31, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Yutaka SuminoYoshihito Mori
Apr 9, 2009·Journal of the American Chemical Society·Taro ToyotaTadashi Sugawara
Sep 28, 2010·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Nobuhiko J SuematsuHiraku Nishimori
Mar 25, 2011·The Journal of Chemical Physics·Fumi TakabatakeKenichi Yoshikawa
Jul 30, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·K ShitaraT Ohta
Aug 27, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Hiroyuki KitahataYutaka Sumino
Dec 14, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Taisuke BannoTaro Toyota
Mar 1, 2012·The Journal of Chemical Physics·S YabunakaN Yoshinaga
Jul 18, 2012·Langmuir : the ACS Journal of Surfaces and Colloids·Karthik PeddireddyChristian Bahr
Feb 2, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Takahiko BanYasunori Okano
May 28, 2013·Langmuir : the ACS Journal of Surfaces and Colloids·Taisuke BannoTaro Toyota
Jun 14, 2014·Soft Matter·Stephan HerminghausChristian Bahr
Dec 30, 2014·Physical Review Letters·Ziane IzriOlivier Dauchot
Apr 1, 2015·Physical Chemistry Chemical Physics : PCCP·Satoshi NakataTakeshi Hasegawa
May 23, 2015·The Journal of Physical Chemistry. B·Takahiko Ban, Hiroki Nakata
Aug 6, 2016·Physical Review Letters·Carsten KrügerCorinna C Maass
Apr 20, 2017·Soft Matter·Takaki Yamamoto, Masaki Sano
May 4, 2017·Proceedings of the National Academy of Sciences of the United States of America·Chenyu JinCorinna C Maass
May 16, 2017·Langmuir : the ACS Journal of Surfaces and Colloids·Naoko UenoTaro Toyota
Feb 17, 2018·Physical Review. E·Takaki Yamamoto, Masaki Sano

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Citations

Mar 28, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jun Yoshioka, Koji Fukao
Nov 7, 2019·Soft Matter·Narendra K Dewangan, Jacinta C Conrad
Oct 24, 2019·Physical Review. E·Francisco J SevillaJuan Ruben Gomez-Solano
Feb 3, 2019·The Journal of Chemical Physics·Matvey Morozov, Sébastien Michelin
Dec 24, 2019·Physical Review Letters·Wei-Fan HuChaouqi Misbah
Sep 14, 2019·Soft Matter·Matvey Morozov, Sébastien Michelin
Nov 11, 2020·Soft Matter·Kevin LipperaSébastien Michelin
Aug 5, 2021·The Journal of Physical Chemistry Letters·Nobuhiko J SuematsuSatoshi Nakata
Oct 28, 2019·Langmuir : the ACS Journal of Surfaces and Colloids·Xin WangNicholas L Abbott

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