Directed Autonomous Motion and Chiral Separation of Self-Propelled Janus Particles in Convection Roll Arrays

Abstract

Self-propelled Janus particles exhibit autonomous motion thanks to engines of their own. However, due to randomly changing direction of such motion they are of little use for emerging nano-technological and bio-medical applications. Here, we numerically show that the motion of chiral active Janus can be directed subjecting them to a linear array of convection rolls. Rectification power of self-propulsion motion here can be made more than 60% which is much larger than earlier reports. We show that rectification of chiral Janus particle's motion leads to conspicuous segregation of dextrogyre and levogyre active particles from a racemic binary mixture. Further, we demonstrate how efficiently the rectification effect can be exploited to separate dextrogyre and levogyre particles when their intrinsic torques are distributed with Gaussian statistics.

References in corpus (22)

• Self-motile colloidal particles: from directed propulsion to random walk
• The Mechanics and Statistics of Active Matter
• Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
• Athermal Phase Separation of Self-Propelled Particles with no Alignment
• Active Brownian Particles. From Individual to Collective Stochastic Dynamics
• Active Motion of Janus Particle by Self-thermophoresis in Defocused Laser Beam
• Microswimmers in Patterned Environments
• Emergent behavior in active colloids
• Nonlinear dynamics of a microswimmer in Poiseuille flow
• Self-propelled Janus particles in a ratchet: Numerical simulations
• Dynamics of a Brownian circle swimmer
• Anomalous Diffusion of Symmetric and Asymmetric Active Colloids
• Sorting of Chiral Microswimmers
• Active phase separation in mixtures of chemically interacting particles
• Non-Equilibrium Strongly Hyperuniform Fluids of Circle Active Particles with Large Local Density Fluctuations
• Hydrodynamic suppression of phase separation in active suspensions
• Phase separation in binary mixtures of active and passive particles
• Autonomous engines driven by active matter: Energetics and design principles
• Rectification and diffusion of self-propelled particles in a two-dimensional corrugated channel
• Motility-sorting of self-propelled particles in micro-channels
• Rectification in a mixture of active and passive particles subject to a ratchet potential
• Active Particle Diffusion in Convection Roll Arrays

Cited by in corpus (4)

• Diffusion Transients in Motility-Induced Phase Separation
• Particle-Wall Alignment Interaction and Active Brownian Diffusion Through Narrow Channels
• Depinning transition of self-propelled particles
• Effect of Convection Rolls in Motility-Induced Phase Separation of Active Janus Particles