title: Critical adsorption of polyelectrolytes onto charged spherical colloids.
abstract: The adsorption of a flexible polyelectrolyte in a salt solution onto an oppositely charged spherical surface is investigated. An analytical solution is derived, which is valid for any sphere radius and consistently recovers the result of a planar surface in the limit of large sphere radii, by substituting the Debye-Hückel potential via the Hulthén potential. Expressions for critical quantities such as the critical radius and the critical surface charge density are provide. A comparison of our theoretical results with experiments and computer simulations yields remarkable good agreement.
authors.affiliation: Institut für Festkörperforschung, Forschungszentrum Jülich, D-52425 Jülich, Germany.
authors.forename: Roland G
authors.initials: RG
authors.lastname: Winkler
authors.forename: Andrey G
authors.initials: AG
authors.lastname: Cherstvy