Synthesis And Characterization Of Nanodiamonds Is...

History The attempt for synthetic diamond was began in late 1800 with some unclarified reports of synthesis. Henri Mossain, a French chemist has done early works on synthetic diamonds by using electric arc discharge. Later Sir Charles Algeornon Passons tried to reproduce Moissan’s method. But later passon revealed that the diamonds produced by him were likely synthetic spinel [1, 2]. In 1954, H.Tracy Hall’s group used the belt press method and reported reproducible synthetic diamond. Nanodiamond films, in the recent years, have created its arena in research field due to their ultimate unique properties like high hardness, fuel cells, biosensor chemical inertness, excellent thermal conductivity optical transparency. In this paper, the synthesis characterization of nanodiamonds is explained by ultra-fast laser ablation technique [3]. Structure Diamond has a Face centered cubic structure. This arrangement makes the diamond toughest, high thermal conductor gives optical diversion properties. The substitution of carbon with boron in diamond lattice improves the electron m0obility in the structure. Nanodiamonds are smoother than microcrystalline diamond which ranges between 10-100nm. Nanodiamonds are often termed as ‘cauliflower’ or ‘ballas’ diamond. They contain large number of grain boundaries with impurities of graphite. Even ultra naocrystalline diamonds have a grain size of 2-1nm [4].