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Journal Highlight: An analysis of bivalve larval shell pigments using micro-Raman spectroscopy

Date: Jun 2, 2014

Author: spectroscopyNOW

The Raman spectra of seven species of bivalve larvae were recorded to assess the types of pigments present in shells of each species and how the ratio of inorganic:organic material changes in a dorso-ventral direction.

Read More thumbnail image: Journal Highlight An analysis of bivalve larval shell pigments using micro-Raman spectroscopy

Milky, milky: Melamine test

Date: Jun 1, 2014

Author: David Bradley

The toxic, nitrogen-rich compound melamine is known to have been added fraudulently to food products, including pet food and baby milk, in order to spoof a higher protein content in food quality control tests that measure nitrogen ration. Now, Italian researchers have developed a novel SERS, surface enhanced Raman spectroscopy, technique to determine melamine in foodstuffs quickly, accurately and easily.

Read More thumbnail image: Milky milky Melamine test

Journal Highlight: M-shaped grating by nanoimprinting: A replicable, large-area, highly active plasmonic surface-enhanced Raman scattering substrate with nanogaps

Date: May 5, 2014

Author: spectroscopyNOW

A simple M-shaped nanograting with narrow V-shaped grooves has been fabricated as a SERS substrate to enhance light-matter interactions.

Read More thumbnail image: Journal Highlight M-shaped grating by nanoimprinting A replicable large-area highly active plasmonic surface-enhanced Raman scattering substrate with nanogaps

Copper sprouts: Growing new solar cell materials

Date: May 1, 2014

Author: David Bradley

A Raman spectroscopy study has looked at how copper produces grass-like nanowires that might one day be exploited in the construction of a new type of solar cell.

Read More thumbnail image: Copper sprouts Growing new solar cell materials

Journal Highlight: FT-SERS applied to the identification of natural dyes in textile fibers: an extractionless approach to the analysis

Date: Apr 15, 2014

Author: spectroscopyNOW

A silver colloid substrate was used to obtain Fourier-transform surface-enhanced Raman spectra of natural historical dyes and build up a spectral reference database of pure dyes.

Read More thumbnail image: Journal Highlight FT-SERS applied to the identification of natural dyes in textile fibers an extractionless approach to the analysis

Water, water everywhere: Ringwoodite revelation

Date: Apr 1, 2014

Author: David Bradley

Raman and IR spectroscopy, X-ray diffraction and other techniques have been used to examine a rare mineral sample of hydrous ringwoodite trapped within a $20 rough diamond for years. Critical water measurements of the sample at the Arctic Resources Geochemistry Laboratory are set to reveal the presence of water based on isotopic microanalysis, suggesting that there may be vast oceans between 410 and 660 kilometres below the Earth's surface.

Read More thumbnail image: Water water everywhere Ringwoodite revelation

Journal Highlight: Decomposition of in vivo spatially offset Raman spectroscopy data using multivariate analysis techniques

Date: Mar 17, 2014

Author: spectroscopyNOW

Spatially offset Raman spectroscopy data were processed with three different multivariate techniques and compared for their performance with a spectrally challenging plastic model system and the analysis of human bone transcutaneously in vivo.

Read More thumbnail image: Journal Highlight Decomposition of in vivo spatially offset Raman spectroscopy data using multivariate analysis techniques

Journal Highlight: Outdoor use of mobile Raman spectrometers to study the solutions and ices of amino acids

Date: Mar 3, 2014

Author: spectroscopyNOW

Glycine, alanine and threonine were analysed in the form of water solutions, their mixtures in solution, as well as their respective ices using two hand-held Raman instruments under outdoor and winter mountain conditions.

Read More thumbnail image: Journal Highlight Outdoor use of mobile Raman spectrometers to study the solutions and ices of amino acids

Sanguine rheology: Blood that's not so thick

Date: Mar 1, 2014

Author: David Bradley

The failure of blood to clot, or coagulate, following serious bodily trauma or a surgical procedure is one of the leading causes of preventable death in patients. Now, a new optical device based on laser speckle rheology requires only a drop or two of blood and a few minutes to measure the key coagulation parameters that can guide medical decisions about how to proceed in the emergency room or operating theatre.

Read More thumbnail image: Sanguine rheology Blood thats not so thick

Fuel fraud: Succumbs to SERS system

Date: Feb 3, 2014

Author:

The details of a patented, stable silver nano-colloid material for use in surface-enhanced Raman spectroscopy (SERS) have been reported by researchers from the University of Lincoln, UK. The system has already demonstrated its utility in portable instrumentation for the identification of fuel fraud.

Read More thumbnail image: Fuel fraud Succumbs to SERS system
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