Raman mapping of coal halos induced by uranium mineral radiation

2021 ◽  
Vol 246 ◽  
pp. 118996
Author(s):  
Vladimír Machovič ◽  
Martina Havelcová ◽  
Ivana Sýkorová ◽  
Lenka Borecká ◽  
Ladislav Lapčák ◽  
...  
Keyword(s):  
Raman Mapping ◽  
Uranium Mineral

Confocal Raman mapping

1992 ◽  
Vol 50 (2) ◽  
pp. 1514-1515
Author(s):  
J. Barbillat ◽  
M. Delhaye ◽  
P. Dhamelincourt
Keyword(s):  
Chemical Species ◽  
Diffraction Limit ◽  
Microscopic Level ◽  
Raman Mapping ◽  
Complete Spectrum ◽  
Laser Illumination ◽  
Ccd Detector ◽  
Raman Microprobe ◽  
Photodiode Array ◽  
Raman Image

Raman mapping, with a spatial resolution close to the diffraction limit, can help to reveal the distribution of chemical species at the surface of an heterogeneous sample.As early as 1975,three methods of sample laser illumination and detector configuration have been proposed to perform Raman mapping at the microscopic level (Fig. 1),:- Point illumination:The basic design of the instrument is a classical Raman microprobe equipped with a PM tube or either a linear photodiode array or a two-dimensional CCD detector. A laser beam is focused on a very small area ,close to the diffraction limit.In order to explore the whole surface of the sample,the specimen is moved sequentially beneath the microscope by means of a motorized XY stage. For each point analyzed, a complete spectrum is obtained from which spectral information of interest is extracted for Raman image reconstruction.- Line illuminationA narrow laser line is focused onto the sample either by a cylindrical lens or by a scanning device and is optically conjugated with the entrance slit of the stigmatic spectrograph.

scholarly journals High-resolution 2D Raman mapping of mono- and bicomponent filament cross-sections

Polymer ◽  
2021 ◽  
pp. 124011 ◽  
Author(s):  
E. Perret ◽  
O. Braun ◽  
K. Sharma ◽  
S. Tritsch ◽  
R. Muff ◽  
...  
Keyword(s):  
High Resolution ◽  
Cross Sections ◽  
Raman Mapping

Polarization-dependence of the Raman response of free-standing strained Ce0.8Gd0.2O2 membranes

2021 ◽  
Author(s):  
Alexander Konetschny ◽  
Marcel Weinhold ◽  
Christian Heiliger ◽  
Matthias Thomas Elm ◽  
Peter J. Klar
Keyword(s):  
Thin Films ◽  
Strain State ◽  
Polarization Dependence ◽  
Raman Mapping ◽  
Free Standing ◽  
Excitation Light ◽  
Oriented Polycrystalline ◽  
Raman Response

Square-shaped Ce0.8Gd0.2O2 (GDC) membranes are prepared by microstructuring techniques from (111)-oriented, polycrystalline GDC thin films. The strain state of the membranes is investigated by micro-Raman mapping using polarized excitation light....

Raman mapping of oral buccal mucosa: a spectral histopathology approach

2014 ◽  
Vol 19 (12) ◽  
pp. 126005 ◽  
Author(s):  
Isha Behl ◽  
Lekha Kukreja ◽  
Atul Deshmukh ◽  
S. P. Singh ◽  
Hitesh Mamgain ◽  
...  
Keyword(s):  
Buccal Mucosa ◽  
Raman Mapping ◽  
Spectral Histopathology

Brannerite, a new uranium mineral

1920 ◽  
Vol 189 (2) ◽  
pp. 225-237 ◽  
Author(s):  
Frank L. Hess ◽  
Roger C. Wells
Keyword(s):  
Uranium Mineral

Surface Chemistry of Oil-Filled Organic Nanoparticle Coated Papers Analyzed Using Micro-Raman Mapping

2018 ◽  
pp. 000370281880486
Author(s):  
Pieter Samyn ◽  
Dries Vandamme ◽  
Peter Adriaensens ◽  
Robert Carleer
Keyword(s):  
Surface Chemistry ◽  
Raman Mapping ◽  
Coated Papers

Gel electrophoresis and Raman mapping for determining the length distribution of SWCNTs

RSC Advances ◽  
2014 ◽  
Vol 4 (70) ◽  
pp. 37070-37078 ◽  
Author(s):  
Waris Obitayo ◽  
Sida Luo ◽  
Zhiwei Xiao ◽  
Tao Liu ◽  
Jingjiao Guan
Keyword(s):  
Raman Scattering ◽  
Gel Electrophoresis ◽  
Length Distribution ◽  
Photoluminescence Spectroscopy ◽  
Raman Mapping ◽  
Simple Method

A simple method (GEP-SRSPL) combines gel electrophoresis and simultaneous Raman scattering and photoluminescence spectroscopy for length distribution measurements of SWCNTs.

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