Results 11 to 20 of about 304,291 (300)
Raman Spectra of Deuteroethylenes [PDF]
Nature, 1937 All the different ethylenes, have been prepared, their Raman spectra in the liquid state measured and classified. A comparison between experimental data and theoretical predictions permits an estimate of the order of magnitude of the anharmonicity.
M. de Hemptinne +2 more
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Classification of Various Marijuana Varieties by Raman Microscopy and Chemometrics
Toxics, 2022 The Raman analysis of marijuana is challenging because of the sample’s easy photo-degradation caused by the laser intensity. In this study, optimization of collection parameters and laser focusing on marijuana trichome heads allowed collecting Raman ...
Luis Ramos-Guerrero +4 more
doaj +1 more source
Fermi energy dependence of first- and second-order Raman spectra in graphene: Kohn anomaly and quantum interference effect [PDF]
, 2016 Intensity of the first- and the second-order Raman spectra are calculated as a function of the Fermi energy. We show that the Kohn anomaly effect, i.e., phonon frequency renormalization, in the first-order Raman spectra originates from the phonon ...
Dresselhaus, Mildred +3 more
core +2 more sources
Comparative study of the two-phonon Raman bands of silicene and graphene [PDF]
, 2016 We present a computational study of the two-phonon Raman spectra of silicene and graphene within a density-functional non-orthogonal tight-binding model.
Lambin, Philippe, Popov, Valentin N.
core +2 more sources
A library of ab initio Raman spectra for automated identification of 2D materials
, 2020 Raman spectroscopy is frequently used to identify composition, structure and layer thickness of 2D materials. Here, we describe an efficient first-principles workflow for calculating resonant first-order Raman spectra of solids within third-order ...
Leffers, U. +3 more
core +1 more source
Frontiers in Veterinary Science, 2022 The aim of this study was to assess feasibility and accuracy of a hand-held, intraoperative Raman spectroscopy device as a neuronavigation aid to accurately detect neoplastic tissue from adjacent normal gray and white matter.
Caitlin E. Doran +3 more
doaj +1 more source
PLoS ONE, 2019 In this study, we utilized a stainless steel (SUS304) plate for measuring the Raman scattering spectra of body fluid samples. Using this stainless steel plate, we recorded the Raman scattering spectra of 99.5% ethanol and human serum samples by ...
Hiroaki Ito +4 more
doaj +1 more source
Raman Imaging of Plant Cell Walls in Sections of Cucumis sativus
Plants, 2018 Raman microspectra combine information on chemical composition of plant tissues with spatial information. The contributions from the building blocks of the cell walls in the Raman spectra of plant tissues can vary in the microscopic sub-structures of the
Ingrid Zeise +5 more
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Raman tweezers spectroscopy of live, single red and white blood cells. [PDF]
PLoS ONE, 2010 An optical trap has been combined with a Raman spectrometer to make high-resolution measurements of Raman spectra of optically-immobilized, single, live red (RBC) and white blood cells (WBC) under physiological conditions.
Aseefhali Bankapur +4 more
doaj +1 more source
A new Raman technique of superior spectral resolution [PDF]
, 1982 Raman-active vibrational modes are coherently excited by the transient stimulated Raman process. A subsequent delayed probe of relatively long duration interacts with the freely relaxing vibrations.
Akhmanov +14 more
core +1 more source