This laboratory has investigated and clarified the following subjects.(1. Photo-assisted plating.2. Formation of thin films at low temperatures by photo assist.3. Diffusion of impurities into silicon at low temperatures by photo irradiation. 4. Synthesis of diamond by chemical vapor deposition.5. Growth of carbon nanotubes.)The present target is the selective growth of metallic-single walled carbon nanotubes using nano-diamond as catalyst.