Abstract
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.
| Original language | English |
|---|---|
| Pages (from-to) | 311-316 |
| Number of pages | 6 |
| Journal | Molecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals |
| Volume | 345 |
| DOIs | |
| Publication status | Published - 2000 |
| Externally published | Yes |
| Event | 3rd International Symposium on Organic Photochromism (ISOP99) - Fukuoka, Jpn Duration: 1999 Nov 14 → 1999 Nov 18 |
ASJC Scopus subject areas
- Condensed Matter Physics