Polarized Raman spectroscopic study of relaxed high density amorphous ices under pressure

2010 ◽  
Vol 133 (16) ◽  
pp. 164508 ◽  
Author(s):  
Yoshiharu Suzuki ◽  
Yasunori Tominaga
Keyword(s):  
Spectroscopic Study ◽  
High Density ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Amorphous Ices ◽  
Polarized Raman

scholarly journals Raman Spectroscopic Study of As-Deposited and Exfoliated Defected Graphene Grown on (001) Si Substrates by CVD

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
T. I. Milenov ◽  
E. Valcheva ◽  
V. N. Popov
Keyword(s):  
Spectroscopic Study ◽  
Chemical Vapor ◽  
Spectroscopic Studies ◽  
Si Substrate ◽  
Raman Spectroscopic ◽  
Si Substrates ◽  
Raman Spectroscopic Study ◽  
Graphene Films ◽  
Polarized Raman ◽  
Defected Graphene

We present here results on a Raman spectroscopic study of the deposited defected graphene on Si substrates by chemical vapor deposition (thermal decomposition of acetone). The graphene films are not deposited on the (001) Si substrate directly but on two types of interlayers of mixed phases unintentionally deposited on the substrates: а diamond-like carbon (designated here as DLC) and amorphous carbon (designated here as αC) are dominated ones. The performed thorough Raman spectroscopic study of as-deposited as well as exfoliated specimens by two different techniques using different excitation wavelengths (488, 514, and 613 nm) as well as polarized Raman spectroscopy establishes that the composition of the designated DLC layers varies with depth: the initial layers on the Si substrate consist of DLC, nanodiamond species, and C70 fullerenes while the upper ones are dominated by DLC with an occasional presence of C70 fullerenes. The αC interlayer is dominated by turbostratic graphite and contains a larger quantity of C70 than the DLC-designated interlayers. The results of polarized and unpolarized Raman spectroscopic studies of as-grown and exfoliated graphene films tend to assume that single- to three-layered defected graphene is deposited on the interlayers. It can be concluded that the observed slight upshift of the 2D band as well as the broadening of 2D band should be related to the strain and doping.

Orientational order in polyethylene foils: A polarized Raman spectroscopic study

1993 ◽  
Vol 24 (8) ◽  
pp. 501-510 ◽  
Author(s):  
Bert J. Kip ◽  
Marnix van Gurp ◽  
Sef P. C. van Heel ◽  
Robert J. Meier
Keyword(s):  
Spectroscopic Study ◽  
Orientational Order ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Polarized Raman

Raman spectroscopic study of artificially twisted and non-twisted trilayer graphene

2021 ◽  
Vol 118 (13) ◽  
pp. 133101
Author(s):  
Sanghyun Kim ◽  
Donghyeon Lee ◽  
Binbin Wang ◽  
Shang-Jie Yu ◽  
Kenji Watanabe ◽  
...  
Keyword(s):  
Spectroscopic Study ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Trilayer Graphene

scholarly journals Hydrogen Bonds: Raman Spectroscopic Study

2021 ◽  
Vol 22 (10) ◽  
pp. 5380
Author(s):  
Boris A. Kolesov
Keyword(s):  
Hydrogen Bonding ◽  
Hydrogen Bonds ◽  
Spectroscopic Study ◽  
Raman Spectra ◽  
Temperature Region ◽  
Vibrational Frequency ◽  
Chemical Compounds ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Proton Dynamics

The work outlines general ideas on how the frequency and the intensity of proton vibrations of X–H×××Y hydrogen bonding are formed as the bond evolves from weak to maximally strong bonding. For this purpose, the Raman spectra of different chemical compounds with moderate, strong, and extremely strong hydrogen bonds were obtained in the temperature region of 5 K–300 K. The dependence of the proton vibrational frequency is schematically presented as a function of the rigidity of O-H×××O bonding. The problems of proton dynamics on tautomeric O–H···O bonds are considered. A brief description of the N–H···O and C–H···Y hydrogen bonds is given.

ChemInform Abstract: RAMAN SPECTROSCOPIC STUDY OF COBALT-MOLYBDENUM Γ-ALUMINA CATALYSTS

1978 ◽  
Vol 9 (40) ◽  
Author(s):  
J. MEDEMA ◽  
C. VAN STAM ◽  
V. H. J. DE BEER ◽  
A. J. A. KONINGS ◽  
D. C. KONINGSBERGER
Keyword(s):  
Spectroscopic Study ◽  
Raman Spectroscopic ◽  
Raman Spectroscopic Study ◽  
Alumina Catalysts
Sign in / Sign up

Export Citation Format

Share Document