Fabrication of diamond shells
A novel method for fabricating diamond shells is introduced. The fabrication of such shells is a multi-step process, which involves diamond chemical vapor deposition on predetermined mandrels followed by polishing, microfabrication of holes, and removal of the mandrel by an etch process. The resultant shells of the present invention can be configured with a surface roughness at the nanometer level (e.g., on the order of down to about 10 nm RMS) on a mm length scale, and exhibit excellent hardness/strength, and good transparency in the both the infra-red and visible. Specifically, a novel process is disclosed herein, which allows coating of spherical substrates with optical-quality diamond films or nanocrystalline diamond films.
- Issue Date:
- OSTI Identifier:
- 1330699
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA) LLNL
- Patent Number(s):
- 9,481,930
- Application Number:
- 11/584,205
- Contract Number:
- W-7405-ENG-48
- Resource Relation:
- Patent File Date: 2006 Oct 20
- Research Org:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org:
- USDOE
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY
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Works referenced in this record:
Growth of diamond films on spherical surfaces by hot filament CVD
journal, February 1998
journal, February 1998
- Lunn, B.; Wright, D. A.; Zhang, L. Y.
- Diamond and Related Materials, Vol. 7, Issue 2-5, p. 129-132