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Molecular Spectroscopy Workbench Column

Raman Microscopy for Detecting Counterfeit Drugs — A Study of the Tablets Versus the Packaging

June 1, 2014

Results of tablet matching measurements and characterization of packaging are presented.

Practical Group Theory and Raman Spectroscopy, Part II: Application of Polarization

March 14, 2014

Polarized Raman spectra are presented along with a discussion of the association of the symmetry species of the normal vibrational mode and the depolarization ratio of Raman scattering.

Practical Group Theory and Raman Spectroscopy, Part I: Normal Vibrational Modes

February 14, 2014

The application of group theory for practical use in laboratory vibrational spectroscopy is examined.

Considerations of Grating Selection in Optimizing a Raman Spectrograph

October 1, 2013

The physics that determine how gratings and spectrographs work are summarized in simple terms for new users of Raman equipment.

Raman Imaging of Silicon Structures

September 1, 2013

What 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.

Resonance Enhancement of Raman Spectroscopy: Friend or Foe?

June 1, 2013

The presence of electronic transitions in the visible part of the spectrum can provide enormous enhancement of Raman signals.

Raman Spectroscopy of Oil Shale

March 1, 2013

Characterizing oil shale, particularly black shale consisting of kerogen, with Raman spectroscopy

Raman Microscopy Analysis of Molecular Orientation in Organic Fibers

February 1, 2013

How the behavior of polarized Raman spectra can elucidate the microscopic structure of fibers

Band-fitting Raman Spectra to Extract Chemical and Physical Information

November 1, 2012

Here, real spectra illustrate how to be your own critic when evaluating band-fitted spectra.

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