Keywords: Ta C structure.jpg Scanning Electron Microscopy SEM image of an Au coated replica of a ta-C diamond-like coating Structural elements are not crystallites but are nodules of sp<sup>3</sup> bonded carbon atoms in which lattice geometries randomly alternate between the cubic and hexagonal polytypes of diamond Scale marker corresponds to about the size of a virus The cobblestone-like structure is at such small scale that such coatings appear mirror smooth Transferred from http //en wikipedia org en wikipedia; transferred to Commons by User Logan using http //tools wikimedia de/~magnus/commonshelper php CommonsHelper 2006-10-25 Drac2000 at http //en wikipedia org en wikipedia Drac2000 Original upload log page en wikipedia Ta_C_structure jpg 2006-10-25 22 23 Drac2000 1212×1691× 476632 bytes <nowiki></nowiki> Carbon Coatings Thin-film deposition |