An apparatus for depositing a diamond film on a substrate includes a first electrode formed as an enclosed body having a nozzle for jetting thermal plasma opening therefrom and a second electrode of opposite polarity positioned in the nozzle. The apparatus additionally includes a power source for applying...http://www.google.de/patents/US5382293?utm_source=gb-gplus-sharePatent US5382293 - Plasma jet CVD apparatus for forming diamond films