Results 241 to 250 of about 23,232,762 (289)

The Deconvolution Method Used In The Analysis Of a-C Raman Spectrum

High Resolution Spectroscopy, 1993
It is believed that the Raman spectrum of amorphous carbon (a-C) is a kind of broadened version of the phonon density of states (PDOS) of graphite1. To further verify this relation and to extract more information from the Raman spectrum of a-C, we introduce the deconvolution method into the analysis of a-C Raman spectrum.
Qi Wang, D. D. Allred
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Defects and stress analysis of the Raman spectrum of diamond films

Diamond and Related Materials, 1992
Abstract Diamond films were deposited on silicon substrates at 750 °C, by the hot-filament technique, from a reactive CH 4 (0.1–2%) H 2 mixtures. Two wide Gaussian lines around 1330 and 1500 cm−1 with coupled variations in the whole preparation range appeared in the global Raman spectra.
E. Gheeraert, A. Deneuville, A.M. Bonnot, L. Abello   +3 more
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Subtracting the Raman Spectrum of Solvent for Quantitative Analysis

Journal of Raman Spectroscopy
ABSTRACT Raman spectroscopy is widely employed for quantitative analysis in aqueous solutions, yet it faces a notable challenge: the overlap of water Raman bands, often used as an internal standard, with analyte bands.
Fei Zhang, Kailin Sun, Yiming Jiang, Guoqing Jia, Fengtao Fan, Can Li   +5 more
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FT-Raman spectrum of cotton: a polymeric biomolecular analysis

Spectrochimica Acta Part A: Molecular Spectroscopy, 1994
Abstract FT-Raman spectra of cotton in the form of a natural plant boll and as an open-weave surgical bandage fabric have been obtained and comprehensive vibrational assignments of natural cellulose have been made. Comparisons are made with the vibrational spectra of mono- and disaccharides such as α- d -glucose and maltose and with partial ...
H.G.M. Edwards, D.W. Farwell, A.C. Williams   +2 more
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Structural analysis of molecules from their Raman spectrum

Journal of Molecular Structure, 1992
Abstract This article is devoted to the study of molecular structure from vibrational spectra. As an example, common methods are applied to solving the complicated problem of rotational isomerism in hydrocarbons. The problem of establishing a relation between the structure of complex molecules and their Raman spectra is discussed.
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Theoretical analysis of the resonance Raman spectrum of tryptophan

Journal of Raman Spectroscopy, 1991
AbstractThe resonance Raman excitation profiles of tryptophan in the region 240‐200 nm were calculated, taking into account the molecular properties of its chromophore, indole. The relevant quantities such as state displacements and vibronic coupling terms were evaluated by means of quantum mechanical semi‐empirical methods.
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Analysis of the raman spectrum of single crystals of naphthalene

Proceedings of the Indian Academy of Sciences - Section A, 1942
The paper reports the results of an exhaustive study and evaluation of 24 spectrograms concerning the Raman effect in a single crystal of naphthalene recorded for various settings of the crystal with respect to the directions of incidence and observation, and also for various directions of vibration in the incident and scattered radiations.
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Analysis and Explanation of Agglomeration Phenomenon Based on Raman Spectrum

Advanced Materials Research, 2015
In this paper, from the standpoint of Raman spectrum research aspect in material science, Raman spectrum analysis of graphite and diamond microcrystal retained by gallium phosphide nanoparticles is introduced. We found that molecular configuration of basic fuchsin adsorbed on gallium phosphide nanoparticles through experiments.
Hai Ling Li, Geng Xin Sun, Shui Qing Jiang, Sheng Bin   +3 more
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Model analysis of the Raman spectrum from fused silica optical fibers

Applied Optics, 1982
Abstract : The Raman spectrum from pure silica optical fibers has been analyzed into a set of Gaussian components. Each component used is related to an observed feature of the spectrum, and a residual of about 1% resulted without the use of additional components. Both single- and multi-phonon peaks were fitted.
G E, Walrafen, P N, Krishnan
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Experimental and theoretical analysis of the rotational Raman spectrum of hydrogen molecules in clathrate hydrates

The Journal of Chemical Physics, 2011
The Raman spectra of H2 and HD molecules in simple hydrogen and binary hydrogen-tetrahydrofuran clathrate hydrates have been measured at temperatures as low as 20 K. The rotational bands of trapped molecules in simple and binary hydrates have been analyzed, and the contributions originating from hydrogen molecules in the large cages have been separated
Alessandra Giannasi, Milva Celli, Marco Zoppi, Massimo Moraldi, Lorenzo Ulivi   +4 more
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