Diffusion of spherical particles in microcavities

A. Imperio, J.T. Padding, W.J. Briels

    Research output: Contribution to journalArticleAcademicpeer-review

    12 Citations (Scopus)


    The diffusive motion of a colloidal particle trapped inside a small cavity filled with fluid is reduced by hydrodynamic interactions with the confining walls. In this work, we study these wall effects on a spherical particle entrapped in a closed cylinder. We calculate the diffusion coefficient along the radial, azimuthal, and axial direction for different particle positions. At all locations the diffusion is smaller than in a bulk fluid and it becomes anisotropic near the container's walls. We present a simple model which reasonably well describes the simulation results for the given dimensions of the cylinder, which are taken from the recent experimental work.
    Original languageEnglish
    Article number154904
    Number of pages9
    JournalThe Journal of chemical physics
    Issue number15
    Publication statusPublished - 2011


    Dive into the research topics of 'Diffusion of spherical particles in microcavities'. Together they form a unique fingerprint.

    Cite this