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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