University of Puerto Rico

Deepak Varshney

Gerardo Morell

Brad R Weiner

Vladimir Makarov

Puja Saxena

Novel sprich diamond-like carbon (DLC) nanorod films were fabricated by hot filament chemical vapor deposition technique. The results are indicative of a bottom-up self-assembly synthesis process, which results in a hierarchical structure that consists of microscale papillae comprising numerous nanorods. The papillae have diameters ranging from 2 to 4 &#x3bc;m and the nanorods have diameters in the 35-45 nm range. A growth mechanism based on the vapor liquid-solid mechanism is proposed that accounts for the morphological aspects in the micro- and nano-scales.

Diamond-like carbon nanorods and fabrication thereof

Diamond thin films were deposited on copper substrate by the Vapor Solid (VS) deposition method using a mixture of fullerene Cand graphite as the source material. The deposition took place only when the substrate was kept in a narrow temperature range of approximately 550-650&#xb0; C. Temperatures below and above this range results in the deposition of fullerenes and other carbon compounds, respectively.

Low-energy, hydrogen-free method of diamond synthesis

The invention presents a simple, non-destructive and non-abrasive method of diamond nucleation using polyethene. It particularly describes the nucleation of diamond on an electrically viable substrate surface using polyethene via chemical vapor deposition (CVD) technique in a gaseous environment.

Growing community of inventors

San Juan, Puerto Rico

Deepak Varshney