Objective and subjective scaled measures suggest that treatment of Reinke's edema in the office with a 532nm KTP laser may result in improved voice. It appears safe with histologic preservation of the vocal fold vibratory epithelium and persistence of mucosal wave.
Although nanocrystalline diamond/β-SiC composite gradient interlayers have been successfully deposited in dealing with the problem of diamond thin-film adhesion to metallic substrates, initial growth process of the two components has not been described, so far. In this letter, we propose that the deposition of composite interlayer is possible because of a selective growth process of diamond and β-SiC phases. There is a competition between the diamond and the β-SiC crystallites to occupy the spaces available on the substrate. The space competition is during the initial nucleation period of the process and also during film growth, leading to the formation of the nanocrystalline composite. The secondary nucleation of β-SiC on the existing diamond surfaces depends on the flux of incoming β-SiC forming gas species. This provides us with a possibility to control phase structure and composition of the composite film by adjusting the tetramethyl silane flow rate.
Mixed-phase diamond/β–SiC composite films with compositional gradient were prepared by microwave plasma-assisted chemical vapor deposition using a gas mixture of hydrogen, methane and tetramethylsilane (TMS). Single-crystalline silicon wafers, pretreated with diamond nanoparticles before deposition, were used as substrates. The film characterization by scanning electron microscopy, electron probe microanalysis, and energy-dispersive x-ray analysis shows that the contents of diamond and silicon carbide in the films vary with TMS flow rate. Diamond/β–SiC composite films with compositional gradients are achievable by varying the TMS flow rate during the film growth process.
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