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Light-Guided Movement of a Liquid Droplet

 

作者: S.K. Oh,   M. Nakagawa,   K. Ichimura,  

 

期刊: Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals  (Taylor Available online 2000)
卷期: Volume 345, issue 1  

页码: 311-316

 

ISSN:1058-725X

 

年代: 2000

 

DOI:10.1080/10587250008023937

 

出版商: Taylor & Francis Group

 

关键词: liquid motion;surface free energy;photoisomerization;monolayer;calix[4]resorcinarene;azobenzene

 

数据来源: Taylor

 

摘要:

This report demonstrates a novel strategy for the light-guided motion of a liquid droplet on photoresponsive surfaces based on reversible changes in surface free energy induced by light. When a liquid droplet in a mm-scale was placed on a substrate surface modified with a calix[4]resorcinarene derivative having photochromic azobenzene units, photoirradiation caused a gradient in surface free energy due to the photoisomerization of surface azobenzenes, leading to directional motion of the liquid droplet. This motion is ascribed to a force imbalance between two opposite edges of the liquid droplet induced by light.

 

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