Issue 36, 2020
From the journal:

RSC Advances

Photo-controllable rotational motion of cholesteric liquid crystalline droplets in a dispersion system†

Yota Sakai,a   Woon Yong Sohn ORCID logo b  and  Kenji Katayama ORCID logo *ac  

* Corresponding authors

a Department of Applied Chemistry, Chuo University, Tokyo 112-8551, Japan
E-mail: kkata.33g@g.chuo-u.ac.jp
Tel: +81-3-3817-1913

b Department of Chemistry, Chungbuk National University, Cheongju, Chungbuk, South Korea

c PRESTO, Japan Science and Technology Agency (JST), Saitama 332-0012, Japan

Abstract

A photo-controllable rotational motion was demonstrated for an isolated cholesteric liquid crystalline droplet in a surfactant solution. The droplet showed unidirectional rigid-body rotation with UV light irradiation and the rotational rate could be controlled by the light intensity. Furthermore, the rotational direction could be controlled by the chirality of dopants. The motion was explained by the rotational torque induced by the photo-induced gradient of chemical concentrations and/or temperature inside the droplet from the theory of the Lehmann effect, and the possible mechanisms are discussed.

Graphical abstract: Photo-controllable rotational motion of cholesteric liquid crystalline droplets in a dispersion system

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Article information

DOI
https://doi.org/10.1039/D0RA03465G
Article type
Paper
Submitted
16 Apr 2020
Accepted
24 May 2020
First published
03 Jun 2020
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2020,10, 21191-21197

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Photo-controllable rotational motion of cholesteric liquid crystalline droplets in a dispersion system

Y. Sakai, W. Y. Sohn and K. Katayama, RSC Adv., 2020, 10, 21191 DOI: 10.1039/D0RA03465G

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