October 24th 2023
At the 2023 Gulf Coast Conference, Spectroscopy spoke with Elena Hagemann of Metrohm USA, about spectroscopy in relation to petrochemicals. This interview was one of four conducted live at GCC 2023.
February 17th 2016
Raman Spectroscopy and Imaging of Low Energy Phonons
September 1st 2015Raman bands in the low energy region of the spectrum of crystals are attributed to so-called external lattice vibrational modes. The Raman bands from these external vibrational modes (low energy phonons) are very sensitive to crystal structure and orientation with respect to the incident laser polarization and to molecular interactions within the crystal. The low energy vibrational modes of many organic molecular crystals have very high Raman scattering cross-sections. Raman spectra and images of low energy phonons in so-called two dimensional (2D) crystals such as few-layer MoS2 reveal spatial variations in the solid state structure that are not evident in the higher energy bands.
US Department of Energy Unveils New Microscope for Materials Science
December 5th 2011A new class of x-ray photoelectron spectroscopic microscope has been developed at the U.S. Department of Energy?s Brookhaven National Laboratory (Upton, New York) and will be used for advanced research on a wide range of technologically important materials systems.
Analysis of Lignin and Cellulose in Biological Energy Sources by Raman Microscopy
February 1st 2010Cellulosic feedstocks from biological harvests (such as timber, prairie grass, and corn stover) or industrial–urban waste have been proposed as a source for the production of energy in the form of fermentation-produced ethanol biofuel.