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Diamond Needles And Tips As Engineered Growth Shapes

Published online by Cambridge University Press:  10 February 2011

K. A. Cherian ,
J. Litster ,
V. Rudolph  and
E. T. White
K. A. Cherian
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802, USA
J. Litster
Affiliation:
Department of Chemical Engineering, University of Queensland, Brisbane 4072, Australia
V. Rudolph
Affiliation:
Department of Chemical Engineering, University of Queensland, Brisbane 4072, Australia
E. T. White
Affiliation:
Department of Chemical Engineering, University of Queensland, Brisbane 4072, Australia
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Abstract

Diamond nucleation and growth by CFD were investigated to examine the possibility of engineering diamond growth shapes for practical applications. The results obtained include the following:

a) Evidence supporting certain factors influencing nucleation - useful in controlling nucleation sites and nucleation density.

b) Evidence for a double spiral growth mechanism operating on (111) faces under specific conditions - indicates the possibility of a new mechanism operating for diamond growth from the vapour phase, and the possibility of larger growth rates.

c) Evidence for the enhanced growth in <100= crystallographic direction on a cubooctahedral crystal and its control by varying the process parameters – thus showing the possibility of obtaining diamond needles and tips as engineered growth shapes, for specific applications.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 416: Symposium DD – Diamond for Electronic Applications , 1995 , 241
Copyright
Copyright © Materials Research Society 1996

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References

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