May 3rd 2024
Jiangsu University scientists developed Raman-based system for detecting aflatoxin B1 (AFB1), a byproduct of the most common fungus that can arise in moldy peanuts.
Raman Imaging of Silicon Structures
September 1st 2013What exactly is a "Raman image" and how is it rendered? The authors explain those points, and demonstrate the use of Raman imaging for the characterization of thin-film and ion-implanted silicon structures. High spectral resolution makes it possible to resolve or contrast the substrate silicon and polysilicon film in Raman images and thus aids in the chemical or physical differentiation of spectrally similar materials.
Polymorph Identification and Analysis Using Ultralow-Frequency Raman Spectroscopy
June 1st 2013Results are reported from studies using volume holographic grating filter technology with both visible and NIR excitation wavelengths to analyze multiple forms of the polymorphic active pharmaceutical ingredient carbamazepine.
Micro-Raman Spectroscopy of Crystal Lattice Chemistry
September 1st 2012Micro-Raman spectroscopy has been used to depth-profile a waveguide produced by an ion-exchange reaction in a single crystal of a ferroelectric metal oxide, and to reveal the changes in chemical bonding and atomic structure that occur in this process.
Duncan Graham Named Recipient of Coblentz Society's 2012 Craver Award
February 22nd 2012The Coblentz Society and the Federation of Analytical Chemistry and Spectroscopy Societies (FACSS) recently named Professor Duncan Graham of the University of Strathclyde (Glasgow, Scotland) as the recipient of the Coblentz Society?s 2012 Craver Award.
Raman Thermometry of Microdevices: Comparing Methods to Minimize Error
November 1st 2011Temperature measurements can be made using spectral features such as the position, linewidth, and intensity of the Raman signal associated with specific optical phonon modes. Each of these spectral characteristics offers particular advantages, depending on the type of device and operational considerations.
Analytical Vibrational Spectroscopy - NIR, IR, and Raman
October 1st 2011How can you navigate the maze of choices for detecting molecular vibrations with mid-infrared (IR), near IR (NIR), and visible (Raman)? Understanding what is being measured, how it is measured, and the advantages and disadvantages of each technique, will help.