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We observed the carbon clusters by TEM after capturing them on a grid membrane during the oxyacetylene flame diamond synthesis. The clusters of ~1.5nm captured on the amorphous membrane in the gas mixture of the acetylene-to-oxygen ratio of 1.04 were mostly amorphous with a few having a diamond lattice. The clusters larger than 5nm captured at the gas ratio of 1.09 were mostly graphite with a minor fraction of diamond.
Center for Microstructure Science of Materials, School of Materials Science & Engineering, Seoul National University, Building 37, Room 106, Seoul 151-742, South Korea
Center for Microstructure Science of Materials, School of Materials Science & Engineering, Seoul National University, Building 37, Room 106, Seoul 151-742, South Korea
Korea Research Institute of Standards and Science, P.O. Box 102, Daejon 305-600, South Korea
Center for Microstructure Science of Materials, School of Materials Science & Engineering, Seoul National University, Building 37, Room 106, Seoul 151-742, South Korea