Raman Spectra of Carbon Surfaces
نویسندگان
چکیده
منابع مشابه
Interpretation of Raman spectra of disordered and amorphous carbon
The model and theoretical understanding of the Raman spectra in disordered and amorphous carbon are given. The nature of the G and D vibration modes in graphite is analyzed in terms of the resonant excitation of p states and the long-range polarizability of p bonding. Visible Raman data on disordered, amorphous, and diamondlike carbon are classified in a three-stage model to show the factors th...
متن کاملInterpretation of infrared and Raman spectra of amorphous carbon nitrides
A general framework for the interpretation of infrared and Raman spectra of amorphous carbon nitrides is presented. In the first part of this paper we examine the infrared spectra. The peaks around 1350 and 1550 cm found in the infrared spectrum of amorphous carbon nitride or hydrogenated and hydrogen-free amorphous carbon are shown to originate from the large dynamic charge of the more delocal...
متن کاملResonance Raman spectra of carbon nanotubes by cross-polarized light.
Resonance Raman studies on single wall carbon nanotubes (SWNTs) show that resonance with cross polarized light, i.e., with the E(mu,mu+/-1) van Hove singularities in the joint density of states needs to be taken into account when analyzing the Raman and optical absorption spectra from isolated SWNTs. This study is performed by analyzing the polarization, laser energy, and diameter dependence of...
متن کاملFT-Raman Spectra of Saffron (Crocus Stivus L.); A Possible Method for Standardization of Saffron
FT-Raman Spectra of Saffron (crocus sativus L.) with a partial assignment is reported. Based on the Raman data, it is concluded that main pigments in saffron are crocins and crocetin. It is proposed that the quickly attainable FT-Raman spectrum of solid saffron, may be used as a means of saffron standardization.
متن کاملSpectra of Hyperbolic Surfaces
These notes attempt to describe some aspects of the spectral theory of modular surfaces. They are by no means a complete survey.
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ژورنال
عنوان ژورنال: TANSO
سال: 1984
ISSN: 1884-5495,0371-5345
DOI: 10.7209/tanso.1984.94