Characterization of diamond films for optical coatings

Three-dimensional diamond growth film simulations: correlations between nucleation and surface parameters

“…According to the R.M.S roughness definition [1], Rq is calculated by the relationship: [4] Where Z corresponds to the relative co-ordinate previously defined. The Skewness Sk which is a measure of the departure of a distribution curve from symmetry [1], is defined by the relationship: [5] In this study, we have chosen to perform simulations in the case of perfect cubo-octahedrons (i.e.…”

“…For example, tribological phenomena such as friction and wear are directly linked to the nature of the real area of contact between the surfaces which is, in turn, dependent upon the distributions, sizes and shapes of the asperities [1][2][3]. On the other, optical devices such as I.R windows and lenses need antireflection diamond coatings whose characteristics are determined by the uniformity and the smoothness [4]. Independently of diamond applications, the realisation of highly oriented diamond films by means of plasma assisted CVD techniques needs a cathodic polarisation of the substrate [5][6][7][8].…”

ESR and X-ray diffraction studies of the CVD diamond films

“…It was already shown [3][4][5] that CVD diamond film properties as, for instance, elastic constants, thermal conductivity or film m o r p h o l o g y critically depend on hydrocarbon concentration during deposition process. Higher hydrocarbon concentration leads to higher sp2-hybridized carbon forms in the CVD diamond film as was confirmed by Raman spectroscopy.…”