Carbon nano-flake ball with a sandwich-structure composite of diamond core covered by graphite using single-step microwave plasma chemical vapor deposition

A three-dimensional nanostructure of carbon material similar to a desert rose stone, named the carbon nano-flake ball, was fabricated by a single-step microwave plasma chemical vapor deposition process. Silicon substrate pretreated with different methods was used to grow carbon nano-flake balls and to control their coverage ratio. The dimension of single carbon nano-flake ball was found to be within 10 μm and it was constructed from multiple...