Laser-induced Multi-energy Processing in Diamond Growth.

摘要

Laser-induced multi-energy processing (MEP) introduces resonant vibrational excitations of precursor molecules to conventional chemical vapor deposition methods for material synthesis. In this study, efforts were extended to explore the capability of resonant vibrational excitations for promotion of energy efficiency in chemical reactions for enhancement of diamond deposition, and for control of chemical reactions. The research project mainly focused on resonant vibrational excitations of precursor molecules using lasers in combustion flame deposition of diamond, which led to: (1) promotion of chemical reactions; (2) enhancement of diamond growth with higher growth rate and better crystallizations; (3) steering of chemical reactions which lead to preferential growth of (100)-oriented diamond films and crystals; and (4) mode-selective excitations of precursor molecules toward bond-selective control of chemical reactions.