TY - JOUR
T1 - Drift instability in the motion of a fluid droplet with a chemically reactive surface driven by Marangoni flow
AU - Yoshinaga, Natsuhiko
AU - Nagai, Ken H.
AU - Sumino, Yutaka
AU - Kitahata, Hiroyuki
PY - 2012/7/16
Y1 - 2012/7/16
N2 - We theoretically derive the amplitude equations for a self-propelled droplet driven by Marangoni flow. As advective flow driven by surface tension gradient is enhanced, the stationary state becomes unstable and the droplet starts to move. The velocity of the droplet is determined from a cubic nonlinear term in the amplitude equations. The obtained critical point and the characteristic velocity are well supported by numerical simulations.
AB - We theoretically derive the amplitude equations for a self-propelled droplet driven by Marangoni flow. As advective flow driven by surface tension gradient is enhanced, the stationary state becomes unstable and the droplet starts to move. The velocity of the droplet is determined from a cubic nonlinear term in the amplitude equations. The obtained critical point and the characteristic velocity are well supported by numerical simulations.
UR - http://www.scopus.com/inward/record.url?scp=84863897262&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.86.016108
DO - 10.1103/PhysRevE.86.016108
M3 - Article
AN - SCOPUS:84863897262
SN - 1539-3755
VL - 86
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 1
M1 - 016108
ER -