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Plasma spray–deposited metal films are used in many industrial applications. This study shows how high resolution terahertz time-domain spectroscopy (THz-TDS) can be used to analyze and characterize such films.

Terahertz Spectral Characterization of Plasma Spray–Deposited Nickel Film on an Alumina Cylinder

Surface-enhanced Raman spectroscopy (SERS), using gold nanoparticles, is useful for detection of low-levels of many analytes, including the water pollutant malachite green (MG).

Synthesis of Differently Sized Gold Nanoparticles for SERS Applications in the Detection of Malachite Green

SERS can be used for the detection and monitoring of drugs as pure compounds and mixtures. A demonstration of a sample preparation method used to detect components with weak substrate adsorption in the spectrum of a mixed solution is shown.

Analysis of a Mixture Solution Using Silver Nanoparticles Based on Surface-Enhanced Raman Spectroscopy (SERS)

The application of data mining combined with data fusion of Raman and mid- infrared spectra was studied to improve discrimination ability for modeling the geographical origins of rice.

Enhanced Raman and Mid-Infrared Spectroscopic Discrimination of Geographical Origin of Rice by Data Mining and Data Fusion

David Tuschel is a Raman applications manager at Horiba Scientific in Edison, New Jersey, where he works with Fran Adar. David is sharing authorship of the "Molecular Spectroscopy Workbench" column with Fran.

Raman and photoluminescence spectroscopy were combined with imaging to examine the spatial variation of solid-state structure and electronic character of two-dimensional (2-D) tungsten disulfide (WS2) crystals, which represent a family of new inorganic 2-D materials.

Combined Raman and Photoluminescence Imaging of Two-Dimensional WS2

Raman measurements of chromite minerals demonstrated that chromium content could be accurately determined, supporting a possible application of portable Raman devices on Earth or in space for mineral analysis of asteroids and planets.

Raman Spectroscopy as a Tool for the Quantitative Estimation of Chromium Aluminum Oxide Content in Chromite

Fran Adar is the Worldwide Raman Applications manager for Horiba Jobin Yvon.

Raman spectra were measured in combination with 2D-COS analysis to understand how the addition of propyl side groups to a biopolymer backbone influences the structure of the polymer at the atomic level.

Assignment of Raman Bands of a Set of Biopolymers with Small Increases in an Added Functional Group

Jerome Workman Jr. serves on the Editorial Advisory Board of Spectroscopy and is currently with Unity Scientific LLC. He is also an adjunct professor at Liberty University and U.S. National University. He can be reached at jworkman04@gsb.columbia.edu.

Zeolites are the most-used catalyst in industry. Synthesizing tailor-made zeolites is hampered by a poor understanding of how zeolite crystals actually form in solution. Scott M. Auerbach of the University of Massachusetts at Amherst is addressing this challenge with Raman spectroscopy.

Using Raman Spectroscopy for the Characterization of Zeolite Crystals

Raman spectroscopy is extremely useful for characterizing crystalline materials.

Raman Crystallography and the Effect of Raman Polarizability Tensor Element Values

Chemistry can help us understand the past.