John Robertson like carbon , and nanodiamond − Raman spectroscopy of amorphous , nanostructured , diamond
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منابع مشابه
Effect of Catalyst on the Growth of Diamond-like Carbon by HFCVD
Diamond like carbon (DLC) film was grown by hot filament chemical vapor deposition (HFCVD)technique. In the present work, we investigated the quality of the DLC films groew on the substratesthat were coated with various metal nanocatalysts (Au and Ni). A combination of CH4/Ar/H2 rendersthe growth of carbon nanostructures technique (diamond like carbon). The utilized samples werecharacterized by...
متن کاملBonding in hydrogenated diamond-like carbon by Raman spectroscopy
We study the 514 and 244 nm Raman spectra of a wide variety of hydrogenated amorphous carbons (a-C:H). The hydrogen content can be estimated from the slope of the photoluminescence background (PL) of the spectra measured at 514.5 nm. Generally, the evolution of the sp and sp phases is not independent for as-deposited a-C:H samples. This, in principle, allows us to derive their structural and op...
متن کاملStress reduction and bond stability during thermal annealing of tetrahedral amorphous carbon
A comprehensive study of the stress release and structural changes caused by postdeposition thermal annealing of tetrahedral amorphous carbon ~ta-C! on Si has been carried out. Complete stress relief occurs at 600–700 °C and is accompanied by minimal structural modifications, as indicated by electron energy loss spectroscopy, Raman spectroscopy, and optical gap measurements. Further annealing i...
متن کاملرسوب فیلم نازک کربن شبه الماس و کاربین بهروش پلاسمای الکترولیتی کاتدی
By using cathodic plasma electrolysis, a thin film of diamond-like carbon and carbyne was produced on the nickel surface. The ethanolic solution at different concentrations of 15, 30 and 50 vol% was used as the electrolyte; the produced carbon film was studied by using glow discharge optical emission spectroscopy, scanning electron microscopy, optical profilometer, and s...
متن کاملAb initio resonant Raman spectra of diamond-like carbons
Raman spectroscopy is a standard tool for the characterisation of carbon materials, from graphite to diamond-like carbon and carbon nanotubes. An important factor is the dependence of the Raman spectra on excitation energy, which is due to resonant processes. Here, we calculate the resonant Raman spectra of tetrahedral amorphous carbon. This is done by a tight-binding method, using an approach ...
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