Enhanced motility in a binary mixture of active nano/microswimmers

Abstract

It is often desirable to enhance the motility of active nano- or microscale swimmers such as, e.g., self-propelled Janus particles as agents of chemical reactions or weak sperm cells for better chances of successful fertilization. Here we tackle this problem based on the idea that motility can be transferred from a more active guest species to a less active host species. We performed numerical simulations of motility transfer in two typical cases, namely for interacting particles with weak inertia effect, by analyzing their velocity distributions, and for interacting overdamped particles, by studying their effusion rate. In both cases we detected motility transfer with a motility enhancement of the host species of up to a factor of four. This technique of motility enhancement can find applications in chemistry, biology and medicine.

10 pages

References in corpus (10)

• Self-motile colloidal particles: from directed propulsion to random walk
• Dynamics of a Brownian circle swimmer
• Inertial effects of self-propelled particles: from active Brownian to active Langevin motion
• Giant Negative Mobility of Janus Particles in a Corrugated Channel
• Chemotaxis of artificial microswimmers in active density waves
• Brownian transport in corrugated channels with inertia
• Transport of active ellipsoidal particles in ratchet potentials
• Escape Kinetics of Self-Propelled Janus Particles from a Cavity: Numerical Simulations
• Hydrodynamic interactions dominate the structure of active swimmers' pair distribution functions
• Activated barrier crossing dynamics of a Janus particle carrying cargo

Cited by in corpus (12)

• Active Ornstein-Uhlenbeck model for self-propelled particles with inertia
• Escape kinetics of self-propelled particles from a circular cavity
• Selecting active matter according to motility in an acoustofluidic setup: Self-propelled particles and sperm cells
• Diffusion Transients in Motility-Induced Phase Separation
• Active Particle Diffusion in Convection Roll Arrays
• Electrokinetic Janus micromotors moving on topographically flat chemical patterns
• Binary Mixtures in Linear Convection Arrays
• Intermediate scattering function of a gravitactic circle swimmer
• Particle-Wall Alignment Interaction and Active Brownian Diffusion Through Narrow Channels
• Macrotransport of active particles in periodic channels and fields: rectification and dispersion
• Motility-dependent selective transport of active matter in trap arrays: Separation methods based on trapping-detrapping and deterministic lateral displacement
• Effect of Convection Rolls in Motility-Induced Phase Separation of Active Janus Particles