Optically induced motion of liquid crystalline droplets

The controlled motion of a liquid crystalline active droplet was demonstrated in a surfactant solution and by irradiation with UV light. The droplet could be induced to roll on a glass substrate toward the UV light source. This was explained by the Marangoni flow induced by the UV-induced desorption...

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Bibliographic Details
Published in:Soft matter 2018-10, Vol.14 (4), p.885-889
Main Authors: Dogishi, Yoshiharu, Sakai, Yota, Sohn, Woon Yong, Katayama, Kenji
Format: Article
Language:English
Subjects:
Crystal structure
Crystallinity
Droplets
Glass substrates
Irradiation
Light sources
Liquid crystals
Pollutants
Surfactants
Ultraviolet radiation
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Summary:The controlled motion of a liquid crystalline active droplet was demonstrated in a surfactant solution and by irradiation with UV light. The droplet could be induced to roll on a glass substrate toward the UV light source. This was explained by the Marangoni flow induced by the UV-induced desorption of surfactants. Rolling motion is activated by UV light for photo-responsive nematic droplets in a surfactant solution.
ISSN:1744-683X
1744-6848
DOI:10.1039/c8sm01426d