Generalized Langevin equation for non-spherical colloidal particles Article

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Overview

abstract

• A general theory is presented to describe the effects of the direct interactions between a labelled non-spherical colloidal particle with other (spherical or non-spherical) particles diffusing around it, on the translational and rotational tracer-diffusion properties of the former. Approximate, but general, expressions are derived for these dynamic properties in terms of static structural properties of the system, in the generic case in which the particles with which the non-spherical tracer interacts are spherical. The specific use of these results is illustrated with the calculation of the rotational diffusion coefficient of a Brownian dipole that interacts with a Brownian one-component plasma, and of an ellipsoidal polyion interacting with its own electrical double layer (electrolyte friction on tobacco mosaic virus).

authors

• Alarcón-Waess O.
• Hernández-Contreras M.
• Medina Noyola Magdaleno

publication date

• 1996-01-01

published in

• Physica A: Statistical Mechanics and its Applications  Journal

Research

keywords

• Brownian movement; Calculations; Diffusion; Electrolytes; Friction; Particles (particulate matter); Plasmas; Viruses; Brownian dipole; Langevin equation; Nonspherical colloidal particles; Polyion; Tracer diffusion properties; Colloids

Identity

Digital Object Identifier (DOI)

• 10.1016/0378-4371(95)00454-8

Additional Document Info

start page

• 62

end page

• 72

volume

• 231

issue

• 1-3