Chemo-Sensitive Running Droplet
Abstract
Chemical control of the spontaneous motion of a reactive oil droplet moving on a glass substrate under an aqueous phase is reported. Experimental results show that the self-motion of an oil droplet is confined on an acid-treated glass surface. The transient behavior of oil-droplet motion is also observed with a high-speed video camera. A mathematical model that incorporates the effect of the glass surface charge is built based on the experimental observation of oil-droplet motion. A numerical simulation of this mathematical model reproduced the essential features concerning confinement within a certain chemical territory of oil-droplet motion, and also its transient behavior. Our results may shed light on physical aspects of reactive spreading and a chemotaxis in living things.
Cite
@article{arxiv.nlin/0505006,
title = {Chemo-Sensitive Running Droplet},
author = {Yutaka Sumino and Masaharu Nagayama and Hiroyuki Kitahata and Shin-ichiro M. Nomura and Nobuyuki Magome and Yoshihito Mori and Kenichi Yoshikawa},
journal= {arXiv preprint arXiv:nlin/0505006},
year = {2007}
}
Comments
17 pages, 10 figures