Raman Spectroscopy / Ezine
In situ chemical analysis of modern organic tattooing inks and pigments by micro-Raman spectroscopy
Date: Sep 1, 2008
Author:
A methodology was established using micro-Raman spectroscopy on an animal model to correctly identify the constituents of a selection of modern, organic tattoo inks in situ or post procedure, within the skin. This may serve as a preliminary tool prior to engaging in Q-switched laser removals to assess the risks of producing potentially hazardous compounds.
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Doping of C60 fullerene peapods with lithium vapor: Raman spectroscopic and spectroelectrochemical studies
Date: Aug 4, 2008
Author:
Raman spectroscopy and in situ Raman spectroelectrochemistry have been applied to the study of the lithium vapor doping of C60 single-walled carbon nanotubes (peapods).
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Absorbing work with heavy metal
Date: Aug 1, 2008
Author: David Bradley
Raman spectroscopy, Fourier transform infrared spectroscopy and scanning electron microscopy have been used to work out the adsorption mechanism of toxic heavy metals on to magnetic nanoparticles. The particles are being developed as a novel remediation material for metals such as the toxic hexavalent chromium.
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Analysis of seized drugs using portable Raman spectroscopy in an airport environment - a proof of principle study
Date: Jul 7, 2008
Author:
The viability of Raman spectroscopy for the rapid identification of illicit substances in their containers in an airport environment has been demonstrated using portable Raman spectrometers.
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Raman boost, on reflection
Date: Jul 1, 2008
Author: David Bradley
UK scientists have developed a new approach for enhancing fluorescence and Raman signals recorded from turbid media in a conventional backscattering geometry. The technique results in an enhanced signal and allows the use of shorter acquisition times.
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Passive signal enhancement in spatially offset Raman spectroscopy
Date: Jun 2, 2008
Author:
Signals in Spatially Offset Raman Spectroscopy (SORS) have been enhanced using a dielectric bandpass filter, leading to the enhancement of both the surface and subsurface Raman layer signal improving the signal-to-noise ratio of Raman spectra from the deep areas of samples.
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One in the eye for Raman
Date: Jun 1, 2008
Author: David Bradley
A simpler, gentler eye test based on Raman spectroscopy could spot ocular infection and other problems without irritating patients, although they may be required to yawn during the procedure.
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Micro-Raman spectroscopy of pigments contained in different calcium carbonate polymorphs from freshwater cultured pearls
Date: May 5, 2008
Author:
Organic pigment molecules in the calcium carbonate polymorph vaterite regions of freshwater cultured pearls were analysed by resonance and near-resonance micro-Raman spectroscopy and compared with their aragonitic counterparts.
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Boning up with Raman
Date: May 1, 2008
Author: David Bradley
A study to assess the biocompatibility and how well a new form of coated titanium implant can spur on bone growth has been carried out using a range of techniques including Raman spectroscopy, microcomputer tomography, scanning electron microscopy, atomic force microscopy, and energy dispersive X-ray analysis.
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Phosphate and amide III mapping in sialoliths with Raman microspectroscopy
Date: Apr 7, 2008
Author:
The mechanism of sialolith formation was studied by analyzing the precise distribution of phosphate (an inorganic substance) and amide III (an organic substance) in sialoliths by using Raman microspectroscopy.
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