Raman Spectroscopy / Ezine
SERS of plant material
Date: Aug 6, 2007
Author:
Colloidal gold and silver were formed by the spontaneous reduction of metal salts by plant tissue, enabling surface-enhanced Raman spectra (SERS) measurements, yielding specific vibrational signatures for the plant components in the proximity of the colloids.
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Mice Slice
Date: Aug 1, 2007
Author: David Bradley
A new methodology for fibre-optic Raman mapping and FTIR imaging of secondary cancer cells, metastases, in mouse brains has been developed by researchers in Germany. The technique can be used on samples thicker than 50 micrometres and could be equally applicable to other diseases and to metabolic fingerprinting.
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Raman scattering of nanoporous semiconductors
Date: Jul 2, 2007
Author:
The application of Raman scattering for characterizing porous semiconductors is reviewed, with examples of porous layers on III-V semiconductors in which Raman scattering is used to study charge carrier depletion.
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CARS and constriction restriction
Date: Jul 1, 2007
Author: David Bradley
Coherent anti-Stokes Raman scattering microscopy has been used to evaluate a new approach to the controlled released of the drug paclitaxel used in preventing a re-narrowing of blood vessels following insertion of a coated-stent to treat the initial condition.
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IR and Raman spectroscopy reveal the frescos found in a medieval monastery
Date: Jun 4, 2007
Author:
Vibrational spectroscopy is applied on samples obtained from the excavation area of the 10th century medieval Monastery of Karaach-Teke in Bulgaria.
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Hybridising Raman
Date: Jun 1, 2007
Author: David Bradley
Dutch researchers have overcome the traditional incompatibility of Raman microscopy with fluorescence microscopy by exploiting the optical properties of semiconductor fluorescent quantum dots (QDs). They have now used their hybrid Raman fluorescence spectral imaging approach in single-cell microscopy applications.
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Nanomechanics of single keratin fibres: A Raman study of the alpha-helix-beta-sheet transition and the effect of water
Date: May 1, 2007
Author:
The use of micro-Raman spectroscopy, through chemical-bond, nano-scale probes, allows the changes in conformations, chain orientation, breakage of disulfide bonds and the increase of intra- and inter-chain distances during the application of stress to be distinguished.
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Stop-motion protein
Date: May 1, 2007
Author: David Bradley
Researchers in Europe have used Raman spectroscopy to help them focus on the active intermediates of an important enzyme and so undertake a freeze-frame analysis of its behaviour.
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Chemical profile of adhesive/caries-affected dentin interfaces using Raman microspectroscopy
Date: Apr 2, 2007
Author:
The purpose of this study was to characterize and compare the interfacial chemistry of adhesive with caries-affected and noncarious dentin using micro-Raman spectroscopy.
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Raman and the "lead" in your pencil
Date: Apr 1, 2007
Author: David Bradley
Graphene recently hit the headlines as a futuristic molecular material from which almost atomic scale transistors might be carved. Interest has thus been piqued in studying all things graphitic. Now, an international team has turned the Raman spotlight on graphene and its chemical cousins to figure out a bit more about why these materials display their unique properties.
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