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Diffusional Coating of Nanoparticles
Published online by Cambridge University Press: 11 February 2011
Abstract
The time-dependent diffusion of particles to an absorbing sphere is investigated with three random walk models. The first uses consecutive independent particles and finds the capture time distributions are exponential for a range of values of the surface absorption probability. The next two models are of the ensemble variety and assume that only a finite number of particles may be absorbed by the sphere. These models investigate depletion effects and concentration dependence. The latter is probed by varying the initial number of diffusing particles. It is found
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- Copyright © Materials Research Society 2003
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