Effect of density on the Raman scattering of molecular fluids. I. A detailed study of the scattering polarization, intensity, frequency shift, and spectral shape in gaseous N2

1973 ◽  
Vol 59 (4) ◽  
pp. 1706-1712 ◽  
Author(s):  
C. H. Wang ◽  
R. B. Wright
Keyword(s):  
Raman Scattering ◽  
Frequency Shift ◽  
Spectral Shape ◽  
Molecular Fluids

The phase, spectral shape and frequency shift of a self-phase modulated pulse

1988 ◽  
Vol 133 (1-2) ◽  
pp. 51-55 ◽  
Author(s):  
Jamal T. Manassah ◽  
Mustafa A. Mustafa
Keyword(s):  
Frequency Shift ◽  
Spectral Shape

FORMATION OF Te NANOWIRES IN ZEOLITE AFI AND THEIR POLARIZED ABSORPTION SPECTRA

2005 ◽  
Vol 19 (15n17) ◽  
pp. 2817-2822 ◽  
Author(s):  
SHUN-ICHI INOUE ◽  
NAOTO KOSHIZAKI ◽  
TETSUYA KODAIRA
Keyword(s):  
Raman Scattering ◽  
Single Crystals ◽  
Absorption Spectra ◽  
Spectral Shape ◽  
Absorption Peak ◽  
High Loading ◽  
One Dimensional ◽  
Anisotropic Properties ◽  
Scattering Spectra ◽  
Raman Scattering Spectra

Te atoms were loaded into nanochannels of zeolite AFI single crystals. The polarized absorption and Raman scattering spectra were measured. The absorption spectra of Te loaded AFI showed large anisotropic properties. The absorption spectra of E//c deeply depended on the loading density of Te atoms. In low Te loading density, Te was adsorbed into the nanochannels in a dimer form whose absorption peak appeared at ca. 3.5 eV . In high loading density, Te form one dimensional nanowires inside the channels. Nanowire formation causes large anisotropic absorption and changes in the spectral shape.

scholarly journals Investigation of the Phonon Spectra in CdSe/CdS Nanoplatelets by Raman Spectroscopy

2021 ◽  
Vol 2015 (1) ◽  
pp. 012076
Author(s):  
N.N. Kurus ◽  
A.G. Milekhin ◽  
R.B. Vasiliev ◽  
B.M. Saidzhonov ◽  
K.V. Anikin ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Frequency Shift ◽  
Phonon Mode ◽  
Longitudinal Optical ◽  
Phonon Modes ◽  
Cdse Core ◽  
Phonon Spectra ◽  
Surface Optical ◽  
Resonant Raman ◽  
Resonant Raman Scattering

Abstract We report the phonon spectra of core/shell CdSe/CdS nanoplatelets with different shell thicknesses studied using Raman scattering. The nanoplatelets are rectangular colloidal nanocrystals, with thicknesses of core and shell layers of a few nanometers. The Raman spectra show features corresponding to the dominating longitudinal optical (LO) and surface optical (SO) phonon modes of the CdSe core in CdS shell located in the frequency regions of 200-210 and 250-290 cm-1, respectively. As the shell thickness increases, the phonon modes reveal a frequency shift and a change in intensity. The frequency shift associated with a change in the stress state in the core and shell, as well as with confinement effects is discussed. The phonon mode intensities are determined by the thickness of the shell and the proximity to resonant Raman scattering conditions.

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