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Selective Growth of Diamond Films On Mirror-Polished Silicon Substrates

Published online by Cambridge University Press:  22 February 2011

M.Y. Mao
Affiliation:
Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050, China
S.S. Tan
Affiliation:
Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050, China
X.K. Zhang
Affiliation:
Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050, China
W.Y. Wang
Affiliation:
Shanghai Institute of Metallurgy, Chinese Academy of Sciences, Shanghai 200050, China
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Abstract

Polycrystalline diamond thin films have been selectively grown on mirror-polished silicon substrates using bias-enhanced microwave plasma chemical vapour deposition (MPCVD) to increase diamond nucleation density. A slight etching of Si02 mask was employed after the nucleation treatment to remove the diamond nuclei on the mask. Perfect diamond patterns with smooth surface (particle size <0.5µm) and sharp boundaries were obtained. The diamond film gears with 400µm in diameter and 5µm in thickness were first fabricated by this technique.

Type
Research Article
Copyright
Copyright © Materials Research Society 1994

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References

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