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Diffusion coefficient of Brownian particle in rough micro-channel

Chen Jun, X. F. Peng, D. J. Lee

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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. © 2005 Elsevier Inc. All rights reserved.
Original languageEnglish
Pages (from-to)737-742
JournalJournal of Colloid and Interface Science
Volume296
Issue number2
DOIs
Publication statusPublished - 15 Apr 2006
Externally publishedYes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

  • Diffusion coefficient
  • Lattice Boltzmann method
  • Quadrate channel
  • Surface roughness
  • Velocity autocorrelation function

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