Fran Adar
Articles
Exploration of the Use of Raman Microscopy to the Identification of Extractables and Leachables from Polymeric Containers
November 29, 2022
Extractables and leachable are typically studied using chromatographic techniques. This study explores what we can learn by using from using Raman microscopy for such studies.
Use of Raman Spectroscopy to Qualify Carbon Materials
June 01, 2022
Here, we explain how Raman spectroscopy is valuable for characterizing industrially important carbon materials.
Interpretation of Raman Spectrum of Proteins
February 01, 2022
Raman spectra can help determine protein structure. Here’s how.
A Simple Introduction to Raman Spectral Identification of Organic Materials
November 01, 2021
Innovative database search technology can help Raman spectroscopists identify molecular vibrations; here, we show how to use these tools more effectively.
Effect of Sampling Optics on Raman Depth Profiling
June 01, 2021
We illustrate how matching the optical properties of the microscope objective with the sample properties improves the spatial resolution and chemical speciation in depth profile measurements using confocal Raman microscopy.
Assignment of Raman Bands of a Set of Biopolymers with Small Increases in an Added Functional Group
February 01, 2021
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.
Very Low Frequency Measurements of Linear Alkanes
November 01, 2020
Low frequency Raman scattering measurements can be used to predict physical properties of polymers and the crystalline polymorphic form of active pharmaceutical ingredients (APIs). These measurements are made by recording the Stokes and anti-Stokes side of the laser line with the laser centered on the detector. Spectra of polyethylene and linear alkanes were recorded down to 4 cm-1.
Use of Raman Microscopy to Characterize Extractables and Leachables
February 01, 2020
Raman microscopy, combined with X-ray fluorescence, can provide detailed information about extractables and leachables from medically implantable devices.
Raman Analysis of Ethylene Vinyl Acetate Copolymers–Using 2D-COS for Identifying Structural Changes
November 01, 2019
Raman 2D-COS spectral data provide information on conformational changes of polymers. Here, Raman spectra of ethylene vinyl acetate and vinyl acetate copolymer are measured and interpreted, enabling a description of morphological changes related to the vinyl acetate group.
Measurement of the Temperature Dependence of Water Using a Near-Infrared Raman Spectrograph
June 01, 2019
The spectral behavior of water is studied using Raman with an NIR spectrograph and dual wavelength lasers for measurements of both the fingerprint and the OH stretching regions. Raman spectra are recorded between 5 ⁰C and 80 ⁰C, and treated with both band-fitting and the 2D-COS algorithm revealing improved insights into the spectral behavior of water.