TY - JOUR
T1 - Chemosensitive running droplet
AU - Sumino, Yutaka
AU - Kitahata, Hiroyuki
AU - Yoshikawa, Kenichi
AU - Nagayama, Masaharu
AU - Nomura, Shin Ichiro M.
AU - Magome, Nobuyuki
AU - Mori, Yoshihito
PY - 2005/10
Y1 - 2005/10
N2 - 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 of oil droplet motion within a certain chemical territory and also its transient behavior. Our results may shed light on physical aspects of reactive spreading and a chemotaxis in living things.
AB - 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 of oil droplet motion within a certain chemical territory and also its transient behavior. Our results may shed light on physical aspects of reactive spreading and a chemotaxis in living things.
UR - http://www.scopus.com/inward/record.url?scp=28844490985&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.72.041603
DO - 10.1103/PhysRevE.72.041603
M3 - Article
AN - SCOPUS:28844490985
SN - 1539-3755
VL - 72
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 4
M1 - 041603
ER -