Self Running Droplet: Emergence of Regular Motion from Nonequilibrium Noise

Details Self Running Droplet: Emergence of Regular Motion from Nonequilibrium Noise Self Running Droplet: Emergence of Regular Motion from Nonequilibrium Noise

2004-06-09

arxiv.org/abs/nlin/0406016v2

Phys. Rev. Lett., 94, 068301 (2005)

Nonlinear Sciences

Adaptation and Self-Organizing Systems

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.94.068301

Spontaneous motion of an oil droplet driven by chemical nonequilibricity is reported. It is shown that the droplet undergoes regular rhythmic motion under appropriately designed boundary conditions, whereas it exhibits random motion in an isotropic environment. This study is a novel manifestation on the direct energy transformation of chemical energy into regular spatial-motion under isothermal conditions. A simple mathematical equation including noise reproduces the essential feature of the transition from irregularity into periodic regular motion. Our results will inspire the theoretical study on the mechanism of molecular motors in living matter, working under significant influence of thermal fluctuation.

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