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Enhancement of Ionic Diffusion by Microwave-Field-Induced Ponderomotive Forces at Physical Interfaces

Published online by Cambridge University Press:  10 February 2011

J. H. Booske ,
R. F. Cooper ,
S. A. Freeman  and
K. R. Binger
J. H. Booske
Affiliation:
ECE Dept, University of Wisconsin, Madison, WI 53706, booske@engr.wisc.edu
R. F. Cooper
Affiliation:
Materials Science and Engr. Dept., Univ. Wisconsin, Madison, WI 53706
S. A. Freeman
Affiliation:
Hewlett-Packard Corporation, Microwave Technology Division, Santa Rosa, CA 95403
K. R. Binger
Affiliation:
ECE Dept, University of Wisconsin, Madison, WI 53706
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Abstract

Numerous observations have been reported in the literature of enhanced mass transport and solid-state reaction rates during microwave heating or processing of a variety of ceramic, glass, and polymer materials. Recent research reveals that these phenomena are probably the result of a previously-unknown driving force for ionic mass transport. The driving force--termed a “ponderomotive” (mass-moving) force--results from the application of intense, high-frequency electric fields near physical interfaces (e.g., free surfaces, grain boundaries). Experiments, theory, and numerical simulations all demonstrate that this driving force can influence solid state reaction kinetics by enhancing mass transport rates.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 527: Symposium Z – Diffusion Mechanisms in Crystalline Materials , 1998 , 525
Copyright
Copyright © Materials Research Society 1998

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References

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