Titlebook: Diffusion at Interfaces: Microscopic Concepts; Proceedings of a Wor Michael Grunze,Jeffrey J. Weimer,Hans Jürgen Kreuz Conference proceedin

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Comparison of Equilibrium and Non-Equilibrium Diffusion Measurements for W(110)p(2x1)-Oons can be made at equilibrium or as the system evolves in time to attain it. The barriers to diffusion can be measured in the two cases and the atomic interactions determined. For the nonequilibrium experiment it is necessary to define a non-equilibrium diffusion coefficient that depends on the mea

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Hopping and Diffusionre. It is controlled by Fick’s law which reads for a one component system.Here n(r,t) is the number density of diffusing particles and D=D(n) is the diffusion coefficient which can, in general, be density dependent. Generalizations of (1) to multi-component systems with the inclusion of thermal effe

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Diffusion at Surfaces: Introductory Remarks in which he relates the coefficient of diffusion to the (root mean square) displacement of a particle and the time elapsed between the initial and the final observation. Even he, Albert Einstein, asks for experimental confirmation of his deductions. Since the three contributions here . experimental

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