Self-propelled motion of a droplet induced by Marangoni-driven spreading

被引：79

作者：

Chen, Yong-Jun ^{[1
]}

Nagamine, Yuko ^{[2
]}

Yoshikawa, Kenichi ^{[1
,2
]}

机构：

[1] Kyoto Univ, Grad Sch Sci, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan

[2] Japan Sci & Technol Agcy, ICORP, Spatio Temporal Order Project, Kyoto 6068502, Japan

来源：

PHYSICAL REVIEW E | 2009年 / 80卷 / 01期

关键词：

WATER; SURFACES; LIQUIDS;

D O I：

10.1103/PhysRevE.80.016303

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

We report the generation of directed self-propelled motion of a droplet of aniline oil with a velocity on the order of centimeters per second on an aqueous phase. It is found that, depending on the initial conditions, the droplet shows either circular or beeline motion in a circular Petri dish. The motion of a droplet depends on volume of the droplet and concentration of solution. The velocity decreases when volume of the droplet and concentration of solution increase. Such unique motion is discussed in terms of Marangoni-driven spreading under chemical nonequilibrium. The simulation reproduces the mode of motion in a circular Petri dish.

引用

页数：7

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