Institutional research of nanoelectromagnetics


International Technological Center, USA
Nanodiamond and Carbon Onion Composites: Optical and Electronic Applications

Recent achievements in production of colloidal suspensions of individual nanodiamond (ND) particles only 4-5nm in size (so called single-digit ND) and the controlled production of nitrogen-vacancy centers in nanoscale diamond opened unprecedented perspectives in electronics and optical applications of NDs. Production of ND particles containing specific impurity defects seems poised to revolutionize biological imaging and quantum optics applications, while nanometer-sized diamond particles are indispensable for seeding of substrates for growth of diamond films by chemical vapor deposition. The two major breakthroughs, the production of ND particles 4-5nm in size and ND particles containing impurity defects exhibiting stable luminescence and unique spin properties are related, however, to ND particles synthesized by different techniques, detonation of explosives and grinding of HPHT diamond, correspondingly. Owing to the lack of optically active particles containing NV centers in useful amounts, ND synthesized from explosives is generally not amongst the preferred candidates for imaging applications. In this paper, systematic studies on N control in NDs produced by detonation shock wave-assisted synthesis using different carbon precursor materials and different combinations of explosives will be discussed. Perspectives of production of NV centers in detonation NDs (DND) will be summarized, as well as the production of photoluminescent DNDs imparted by other means will be also discussed. Recent advances in electromagnetic shielding using onion-like carbon obtained by high temperature annealing of DND will be briefly surveyed and areas of future scientific research highlighted.