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Particle Compaction with Alternating Electric Fields: The Effects of Electrode Geometry

Published online by Cambridge University Press:  28 February 2011

Alan J. Hurd
Alan J. Hurd*
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
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Abstract

A technique for inducing ordered, close-packed arrangements of various symmetries among colloidal particles is discussed. An external alternating electric field applied to the colloid induces dipole interactions of variable strength by polarizing either the dielectric material of the particles or their electrostatic double layers. Ordering in various symmetries can be obtained by switching the field rapidly between pairs of electrodes, thereby changing the orientation of the induced dipoles. A small dc bias serves to deposit and compact the aligned particles.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 73: Symposium H – Better Ceramics Through Chemistry II , 1986 , 345
Copyright
Copyright © Materials Research Society 1986

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References

REFERENCES

1. Bowen, H.K., Mat. Res. Soc. Symp. Proc. Vol. 24, 1 (1984); Materials Science and Engineering 44, 1 (1980).Google Scholar
2. Hurd, A.J., Fraden, S. and Meyer, R.B., in Proceediny of the Second International Conference on Ultrastructure Processing of Ceramics, Glasses, and Composites, edited by Hench, L.L. and Uhlrich, D.R. (Palm Coast, Florida, 1985).Google Scholar