Raman Spectroscopy / Ezine
Gold wrinkles boost SERS
Date: Jul 1, 2010
Author: David Bradley
Polydimethylsiloxane can be used to produce wrinkles on a glass surface to pattern lines of gold which are twice as effective as conventional SERS substrates, according to German and Spanish researchers.
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Tentative differentiation between Iznik tiles and copies with Raman spectroscopy using both laboratory and portable instruments
Date: Jun 7, 2010
Author:
Iznik tiles dated from the 16th century, copies of tiles and pottery of Theodore Deck from the 19th century, and also tiles without any information on their origin were analyzed with both laboratory and portable Raman instruments.
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Volcanic spectroscopy
Date: Jun 1, 2010
Author: David Bradley
Italian researchers have used salver of techniques, including microscopic Raman and Fourier transform infrared (FTIR) spectroscopies, X-ray diffraction and scanning electron microscopy-energy dispersive X-ray to study powdered pigments found in bowls from the Pompeii archaeological site as well as wall-painting fragments from the Vesuvian region.
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Raman spectra of organic acids obtained using a portable instrument at -5 °C in a mountain area at 2000 m ASL
Date: May 3, 2010
Author:
Well-resolved Raman spectra of organic acids were successfully obtained under field conditions using a portable Raman instrument under low-temperature atmospheric conditions at an altitude of 2000 m.
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Microbial Raman
Date: May 1, 2010
Author: David Bradley
Surface-enhanced Raman scattering (SERS) can be used in a new microarray approach to microbial detection that is label-free, according to researchers writing in the April issue of the journal Analytical Chemistry.
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Molecular effects of high-pressure processing on food studied by resonance Raman
Date: Apr 5, 2010
Author:
The color changes of poultry, pork, and smoked salmon following high-pressure processing were studied using the CIE L*, a*, b* system and resonance Raman spectroscopy.
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Muscling in on the mussels' grip
Date: Apr 1, 2010
Author: David Bradley
In situ Raman spectroscopy has been used to probe the chemical composition of the cuticle of a bivalve mollusc to help explain how mussels keep such a strong grip on rocky shorelines.
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Surface-enhanced Raman spectroscopy (SERS) on silver colloids for the identification of ancient textile dyes: Tyrian purple and madder
Date: Mar 1, 2010
Author:
Surface-enhanced Raman spectroscopy (SERS) was used for the identification of natural organic dyes belonging to indigoid and anthraquinone classes in archeological samples.
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Non-destructive spit test
Date: Mar 1, 2010
Author: David Bradley
Raman spectroscopy can identify samples of an unknown substance at a crime scene as human saliva during forensic analysis, according to a US study, the technique would preserve DNA evidence.
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Narrow view of photosynthesis
Date: Feb 1, 2010
Author: David Bradley
Fluorescence line-narrowing and resonance Raman properties of various chlorophyll molecules have been measured in organic solvents. The work sheds new light on one of life's most important biochemical processes - photosynthesis - and might one day allow scientists to take another step closer to emulating the reactions to trap solar energy.
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