Chemistry of inorganic compounds – Carbon or compound thereof – Elemental carbon
Reexamination Certificate
2006-10-31
2006-10-31
Hendrickson, Stuart L. (Department: 1754)
Chemistry of inorganic compounds
Carbon or compound thereof
Elemental carbon
C117S101000
Reexamination Certificate
active
07128889
ABSTRACT:
An ultrananocrystalline diamond (UNCD) having an average grain size between 3 and 5 nanometers (nm) with not more than about 8% by volume diamond having an average grain size larger than 10 nm.A method of manufacturing UNCD film is also disclosed in which a vapor of acetylene and hydrogen in an inert gas other than He wherein the volume ratio of acetylene to hydrogen is greater than 0.35 and less than 0.85, with the balance being an inert gas, is subjected to a suitable amount of energy to fragment at least some of the acetylene to form a UNCD film having an average grain size of 3 to 5 nm with not more than about 8% by volume diamond having an average grain size larger than 10 nm.
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The American Physical Society, Review B, vol. 65, Tight Binding Molecular Dynamics Simulation of Impurities in Ultrananocrystalline Diamond Grain Boundaries, ZOPOL, P., Sternberg M Curtiss L Frauenhiem T and Gruen D 2001-045403-1-11.
Auciello Orlando
Birrell James
Carlisle John A.
Emrich & -Dithmar
Hendrickson Stuart L.
Raetzsch Alvin
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