Cooperativity in the adsorption of magnetic colloidal particles.

Journal Article (Journal Article)

In this paper we investigate the adsorption of magnetic particles onto magnetically patterned substrates. We find that the adsorption process is cooperative, where the probability of adsorption decreases with increasing substrate occupancy (namely, density of adsorbed particles). The effect of cooperativity can be accounted for by a simple modification of the adsorption probability as manifested by the binomial distribution. The negative cooperativity found in the magnetic particle adsorption is not due to direct repulsion between particles, but to screening of the surface's magnetic field by previously adsorbed particles. Thus, the adsorption of magnetic colloids on magnetic substrates is a self-limiting process.

Full Text

Duke Authors

Cited Authors

  • Komaee, K; Yellen, B; Friedman, G; Dan, N

Published Date

  • May 2006

Published In

Volume / Issue

  • 297 / 2

Start / End Page

  • 407 - 411

PubMed ID

  • 16310800

Electronic International Standard Serial Number (EISSN)

  • 1095-7103

International Standard Serial Number (ISSN)

  • 0021-9797

Digital Object Identifier (DOI)

  • 10.1016/j.jcis.2005.10.067


  • eng