LASER-ENHANCED SYNTHESIS AND PROCESSING OF DIAMOND FILMS FROM LIQUID HYDROCARBONS

We report synthesis of diamond films by pulsed laser irradiation on co pper substrate immersed into liquid benzene. It is envisaged that carb on released from benzene at the liquid-solid interface is converted in to diamond as a result of rapid quenching from a high temperature. The diamond crystallites were characterized using high resolution transmi ssion electron microscopy imaging and electron diffraction techniques. Growth of thicker diamond films by subsequent chemical vapor depositi on has been investigated by transmission and scanning electron microsc opy techniques. Thin diamond film deposited during liquid phase provid ed seed for diamond growth during subsequent chemical vapor deposition .