Current and diffusion of Overdamped Active Brownian Particles in a Ratchet Potential

2022/11/08 by S R Arjun, Ronald Benjamin, R, Arjun S +1
Engineering · Physics and Astronomy · #Advanced Thermodynamics and Statistical Mechanics #FOS: Physical sciences #Micro and Nano Robotics #Molecular Communication and Nanonetworks #Soft Condensed Matter (cond-mat.soft)

paper · pdf · doi:10.48550/arxiv.2211.04298

openalex publication_date 2022/11/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The transport properties of a spherical active Brownian particle in a periodic potential under heavy damping are considered. The self-propelled particle is subjected to the asymmetric potential, detailed balance is lost and the particles generate a non-zero drift speed. The average current is calculated and the diffusivity of the particle is analyzed from the effective diffusion coefficient. For chiral active particles, the diffusivity decreases with increasing the angular velocity, confining the particle near the initial position, and reducing the average current.

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