Results 51 to 60 of about 307,616 (251)

Raman scattering study of phonon and spin modes in (TMTSF)2PF6

open access: yes, 2001
We have studied polarized Raman spectra of (TMTSF)2PF6 single crystals in the wide spectral and temperature range using different laser energies. We observed and assigned 23 Raman active modes. The carbon C=C in-phase and out-of-phase stretching modes at
Ivanov, V. A.   +5 more
core   +1 more source

Intersubband electronic Raman scattering in narrow GaAs single quantum wells dominated by single-particle excitations [PDF]

open access: yes, 2004
We measured resonant Raman scattering by intersubband electronic excitations in GaAs/AlAs single quantum wells (QWs) with well widths ranging from 8.5 to 18 nm.
A. Pinczuk   +10 more
core   +1 more source

Single-cell genomics based on Raman sorting reveals novel carotenoid-containing bacteria in the Red Sea [PDF]

open access: yes, 2016
Cell sorting coupled with single-cell genomics is a powerful tool to circumvent cultivation of microorganisms and reveal microbial ‘dark matter’. Single-cell Raman spectra (SCRSs) are label-free biochemical ‘fingerprints’ of individual cells, which can ...
Davison, Paul A.   +11 more
core   +4 more sources

High Spectral Resolution Raman Measurements Using Light-Emitting Diode as Excitation Based on Weighted Spectral Reconstruction Method

open access: yesIEEE Access, 2019
Raman spectroscopy is a spectroscopic technique that can provide rich biochemical information about the sample through the inelastic scattering between monochromatic light and molecular vibrations, thus a narrow bandwidth and costly laser is typically ...
Shuo Chen   +7 more
doaj   +1 more source

Polarized far-infrared and Raman spectra of SrCuO2 single crystals

open access: yes, 2000
We measured polarized far-infrared reflectivity and Raman scattering spectra of SrCuO$_2$ single crystals. The frequencies for infrared-active modes were determined using an oscillator-fitting procedure of reflectivity data.
A. Vietkin   +27 more
core   +1 more source

Preparation method of tungsten oxide and metallic tungsten nano-powders using degreased cotton

open access: yesPhysical Sciences and Technology, 2018
A simple method for producing nanopowders of tungsten oxides and metallic tungsten using degreased cotton is proposed. Ammonium tungstate NH4W12O40 was used as a precursor. A medical cotton wool was chosen for experiment. Structural characterizations of
A.A. Marhabaeva   +4 more
doaj  

Second- and Third-order Raman Scattering in Bulk and Glass-embedded Nanometric CdS1 – xSex Crystals [PDF]

open access: yesЖурнал нано- та електронної фізики, 2014
Second- and third-order Raman spectra of bulk and nanometric CdS1 – xSex crystals were measured. At off-resonance excitation conditions the second-order Raman spectra of bulk CdS1 – xSex exhibit anharmonic coupling of optical phonons and two-phonon ...
V.V. Lopushansky
doaj  

Raman modes of the deformed single-wall carbon nanotubes

open access: yes, 2007
With the empirical bond polarizability model, the nonresonant Raman spectra of the chiral and achiral single-wall carbon nanotubes (SWCNTs) under uniaxial and torsional strains have been systematically studied by \textit{ab initio} method.
C. A. Cooper   +9 more
core   +1 more source

Characterization of cobalt ferrite nanoparticles obtained by various synthesis methods and comparison with the Raman spectra of other ferrites and some cubic oxide spinels [PDF]

open access: yesScience of Sintering
Single phase cobalt ferrite (CoFe2O4) with nanoparticles of similar sizes (15.7-19 nm) was obtained by different synthesis methods: coprecipitation, ultrasonically assisted coprecipitation, coprecipitation followed by mechanochemical treatment ...
Lazarević Zorica Ž.   +7 more
doaj   +1 more source

Quantitative Analysis of Hydrogenated DLC Films by Visible Raman Spectroscopy

open access: yes, 2006
The correlations between properties of hydrogenated diamond like carbon films and their Raman spectra have been investigated. The films are prepared by plasma deposition technique, keeping different hydrogen to methane ratio during the growth process ...
Achintya Singha   +5 more
core   +1 more source

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