A method and article of manufacture of amorphous diamond-like carbon. The method involves providing a substrate in a chamber, providing a mixture of a carbon containing gas and hydrogen gas with the mixture adjusted such that the atomic molar ratio of carbon to hydrogen is less than 0.3, including all...http://www.google.se/patents/US6548173?utm_source=gb-gplus-sharePatent US6548173 - Method of produce ultra-low friction carbon films