title: Diffusion coefficient of Brownian particle in rough micro-channel.
abstract: This study examines the feasibility of using of the lattice Boltzmann method to determine how the surface roughness of a quadrate channel affects the diffusion coefficient of Brownian particle(s). The surface was represented by a regular array of spheres. Surface roughness reduced the diffusion coefficient of the Brownian particle(s) because of a change in the velocity autocorrelation function decay and in pressure. Additionally, the neighboring particles increased the diffusion coefficient of Brownian particle.
authors.affiliation: Thermal Engineering Department, Tsinghua University, Beijing 100084, China.
authors.forename: Chen
authors.initials: C
authors.lastname: Jun
authors.forename: X F
authors.initials: XF
authors.lastname: Peng
authors.forename: D J
authors.initials: DJ
authors.lastname: Lee