期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 349, 期 1-3, 页码 74-77出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2009.07.054
关键词
Camphor; Self-motion; Intermittent motion; Nonequilibrium; Air/water interface; Surface tension
资金
- Asahi Glass Foundation [20550124]
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) of Japan
The periodic motion of a camphor. oat on water was investigated as a simple example of an autonomous motor. When a camphor disk that was connected to the center of a larger plastic disk was floated on water, intermittent motion ( alternating between rest and rapid motion) was observed. The period of intermittent motion decreased with an increase in the hydrophobicity of the plastic film, which depended on the density of carbon powder that had been adhered to the plastic film with a laser printer. When a square plastic film with half-hydrophobic and half-hydrophilic surfaces was used as the camphor. oat, the direction of intermittent motion was mostly toward the hydrophilic side. These phenomena are discussed in relation to the diffusion of camphor molecules at the film/water interface and the surface tension around the film as the driving force. (C) 2009 Elsevier B. V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据