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Brownian walker in a confined geometry leading to a space-dependent diffusion coefficient

Author

Listed:
  • Lançon, P.
  • Batrouni, G.
  • Lobry, L.
  • Ostrowsky, N.

Abstract

Brownian motion in a confined geometry has been studied using both light scattering and digital video microscopy. The particles were trapped between two nearly parallel walls making their confinement position dependent. Consequently, not only did we measure a diffusion coefficient which depended on the particles’ position, but also report and explain a new effect: a drift of the particles’ individual positions in the direction of the diffusion coefficient gradient, in the absence of any external force or concentration gradient.

Suggested Citation

  • Lançon, P. & Batrouni, G. & Lobry, L. & Ostrowsky, N., 2002. "Brownian walker in a confined geometry leading to a space-dependent diffusion coefficient," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 304(1), pages 65-76.
    • Handle: RePEc:eee:phsmap:v:304:y:2002:i:1:p:65-76
    DOI: 10.1016/S0378-4371(01)00510-6
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    Cited by:

    1. Silvano, Nathan O. & Barci, Daniel G., 2023. "The role of multiplicative noise in critical dynamics," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 630(C).
    2. Bringuier, E., 2012. "Transport of volume in a binary liquid," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 391(21), pages 5064-5075.

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