USA As Represented by Secretary of the Navy

Tingyu Bai

Karl D Hobart

Travis J Anderson

Marko J Tadjer

Andrew D Koehler

Tatyana I Feygelson

Mark Goorsky

Samuel Graham, Jr

Zhe Cheng

Luke Yates

Yekan Wang

A method for growing polycrystalline diamond films having engineered grain growth and microstructure. Grain growth of a polycrystalline diamond film on a substrate is manipulated by growing the diamond on a nanopatterned substrate having features on the order of the initial grain size of the diamond film. By growing the diamond on such nanopatterned substrates, the crystal texture of a polycrystalline diamond film can be engineered to favor the preferred &#x3c;110&#x3e; orientation texture, which in turn enhances the thermal conductivity of the diamond film.

Diamond on nanopatterned substrate

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Los Angeles, CA, United States of America

Tingyu Bai