Raman Spectroscopy

May 13, 2015
Spectroscopy
Locate particles, generate size or shape statistics, select particles based on size or shape, and acquire Raman spectra. Easily locate and identify particulate matter, including pharmaceutical materials, trace forensic evidence, geological rock or mineral particles, and airborne contaminants trapped on filters.
Mar 23, 2015
Spectroscopy
Demonstrates uRaman from TechnoSpex Pte. Ltd. is a promising instrument to determine the quality of the transferred single layered graphene on a 300-nm silicon dioxide (SiO2) substrate.
Mar 01, 2015
Spectroscopy
Resonance and off-resonance Raman spectroscopy and imaging are used to examine the spatial variation of the solid-state structure and electronic character of few-layer MoS2 flakes. Simultaneous acquisition of photoluminescence spectra with the Raman scattering provides complementary ways of rendering Raman and photoluminescence spectral images of thin-film MoS2.
Dec 01, 2014
BioPharm International
Implementing process analytical technology for bioprocessing presents unique challenges, but the recent emphasis on establishing a thorough understanding of the manufacturing process is a key enabler of PAT approaches.
Nov 18, 2014
Wavelength
By Spectroscopy Editors
Raman microscopy is a promising technique for visualizing the distribution of molecules in cells. However, along with the benefits come challenges. This interview with Katsumasa Fujita, an associate professor in the Department of Applied Physics at Osaka University in Osaka, Japan, discusses his use of this technique for the imaging of live cells.
Oct 31, 2014
Spectroscopy
A method for removing fluorescence-induced backgrounds from Raman spectra using sequentially shifted excitation (SSE) is described. The method uses a temperature-tuned, distributed Bragg reflector diode laser to produce the multiple excitation spectra required to implement the SSE algorithm. Examples applying the SSE method to analysis of motor oils and edible oils are given.
Jun 23, 2014
Wavelength
By Spectroscopy Editors
The physicochemical properties of drugs are often very diverse and challenging to analyze. Spectroscopy recently spoke with Dr. Lynne Taylor of the Department of Industrial and Physical Pharmacy at Purdue University, and the 2014 Coblentz Society Craver Award winner, about her on-going research using Raman and IR spectroscopy to study drugs and drug excipients - and the interactions of the two.
May 31, 2014
Special Issues
Melamine is a dangerous substance when it is used to increase the apparent protein content of food. In this article, the use of novel gold nanoparticles for surface-enhanced Raman spectroscopy (SERS) measurements with raster orbital scanning sampling is described for the detection of melamine and other food contaminants.
May 31, 2014
Special Issues
The Raman technique is gaining widespread acceptance as an investigative tool for forensic applications.