Asymmetry in Colloidal Diffusion near a Rigid Wall

Mauricio D. Carbajal-Tinoco, Ricardo Lopez-Fernandez, and José Luis Arauz-Lara
Phys. Rev. Lett. 99, 138303 – Published 28 September 2007

Abstract

The three-dimensional motion of single colloidal particles close to a plane wall is measured by optical microscopy. In accordance with classical theoretical predictions, we find an asymmetric motion of the particles in the directions parallel and perpendicular to the wall. We also find that, close to the wall, the distribution functions of perpendicular steps are asymmetric, being shorter toward the wall and longer away from it.

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  • Received 18 May 2007

DOI:https://doi.org/10.1103/PhysRevLett.99.138303

©2007 American Physical Society

Authors & Affiliations

Mauricio D. Carbajal-Tinoco1, Ricardo Lopez-Fernandez1, and José Luis Arauz-Lara1,2

  • 1Departamento de Física, Cinvestav, Avenida IPN 2508, Colonia Zacatenco, 07360 México D.F., Mexico
  • 2Instituto de Física “Manuel Sandoval Vallarta,” Universidad Autónoma de San Luis Potosí, Alvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico

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Vol. 99, Iss. 13 — 28 September 2007

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