Directed transport of multiple deformable particles in time-oscillating potentials.

Area of Science:

• Soft matter physics
• Nonlinear dynamics
• Statistical mechanics

Background:

• Understanding active matter transport in complex environments is crucial.
• Time-oscillating potentials create nonequilibrium conditions.
• Particle deformability introduces unique transport behaviors.

Purpose of the Study:

• To numerically investigate the transport of multiple deformable particles in time-oscillating potentials.
• To analyze the influence of self-propulsion, oscillation frequency, and particle interactions on transport.
• To explore the potential for selective particle separation using tunable system parameters.

Main Methods:

• Numerical simulations of multiple deformable particles.
• Analysis of transport dynamics under varying potential asymmetry, self-propulsion speed, and oscillation frequency.
• Investigation of the effects of rotational noise and particle density.

Main Results:

• Transport direction is dictated by the interplay between self-propulsion and potential oscillation frequency.
• Particle deformability can enhance or hinder transport.
• Rotational noise and particle density show nonmonotonic effects, leading to velocity reversals.
• Collective interactions yield richer dynamics and enhanced transport rectification compared to single particles.

Conclusions:

• Multiple velocity reversals are achievable by tuning system parameters, enabling selective particle separation.
• The study deepens the theoretical understanding of active soft matter in time-dependent potentials.
• Findings can guide experimental strategies for controlling and separating deformable particles.