Self Running Droplet: Emergence of Regular Motion from Nonequilibrium Noise

Abstract

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.

4 pages, 4 figures

Cited by in corpus (40)

• Active Brownian Particles. From Individual to Collective Stochastic Dynamics
• Emergent behavior in active colloids
• Spontaneous autophoretic motion of isotropic particles
• Ultrafast Spontaneous Motion of Nanodroplets
• Mode Selection in the Spontaneous Motion of an Alcohol Droplet
• A Classical Density-Functional Theory for Describing Water Interfaces
• Self-Propelled Motion of a Droplet Induced by Marangoni-driven Spreading
• Drift instability in the motion of a fluid droplet with a chemically reactive surface driven by Marangoni flow
• Spontaneous motion of a droplet coupled with a chemical wave
• Self-propelled running droplets on solid substrates driven by chemical reactions
• Chemo-Sensitive Running Droplet
• Spontaneous motion and deformation of a self-propelled droplet
• Deformation of a self-propelled domain in an excitable reaction-diffusion system
• Dynamics of a deformable self-propelled domain
• Gradient induced liquid motion on laser structured black Si surfaces
• Oscillatory Motion of a Camphor Grain in a One-Dimensional Finite Region
• Thermodynamics and statistical mechanics of chemically-powered synthetic nanomotors
• Collective motion of active Brownian particles in one dimension
• Perturbation Theory for Traveling Droplets
• Spontaneous motion of a camphor particle with a triangular modification from a circle
• Lattice Boltzmann study of chemically-driven self-propelled droplets
• Autonomous movement of chemically powered vesicle
• Imperfect bifurcation in the rotation of a propeller-shaped camphor rotor
• General Criteria for Determining Rotation or Oscillation in a Two-dimensional Axisymmetric System
• Two floating camphor particles interacting through lateral capillary force
• Swinging Motion of Active Deformable Particles in Poiseuille Flow
• Marangoni-Induced Reversal of Meniscus-Climbing Microdroplets
• On a simple model that explains inversion of a self-propelled rotor under periodic stop and release operations
• Dynamics of Deformable Active Particles under External Flow Field
• Locomotive and reptation motion induced by internal force and friction
• Chemo-capillary instabilities of a contact line
• Deformation dynamics of an oil droplet into a crescent shape during intermittent motion
• Gradient dynamics model for chemically driven running drops
• Walks of bubbles on a hot wire in a liquid bath
• Curvature Gradient Driving Droplets in Fast Motion
• Self-propulsion dynamics of small droplets on general surfaces with curvature gradient
• Surface Curvature-Induced Directional Movement of Water Droplets
• Planar and curved droplet networks
• Short-time approximate solutions of an equation modeling a camphor motion
• Energetics-based model for a diffusiophoretic motion of a deformable droplet