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Journal Highlight: Raman spectroscopic mapping of the carbon and PTFE distribution in gas diffusion layers

Date: May 2, 2011

Author:

Raman microspectroscopy was used to gather spatially resolved chemical information on the carbon and poly(tetrafluoroethylene) distribution of fuel cell gas diffusion layers.

Read More thumbnail image: Journal Highlight Raman spectroscopic mapping of the carbon and PTFE distribution in gas diffusion layers

Sloshing charge: the origin of SERS

Date: May 1, 2011

Author: David Bradley

New quantum calculations show how electrical charge can slosh from a target molecule to the metal being used to enhance Raman signals in Surface-enhanced Raman spectroscopy (SERS). The finding could finally explain the mechanism by which this technique boosts Raman spectra in terms of the chemical contribution to the effect.

Read More thumbnail image: Sloshing charge the origin of SERS

Journal Highlight: Reliable and non-destructive Raman analysis to determine the urea concentration in a cream formulation

Date: Apr 4, 2011

Author:

A reliable and nondestructive analytical method for the determination of urea concentration in a pharmaceutical cream formulation using Raman spectroscopy gave accurate results despite the spectral collection being performed through plastic bottles.

Read More thumbnail image: Journal Highlight Reliable and non-destructive Raman analysis to determine the urea concentration in a cream formulation

Testing times for beta-carotene and relatives: Raman clues to cosmeceuticals

Date: Apr 1, 2011

Author: David Bradley

While cosmetic manufacturers tend to avoid producing actual medical effects in skin for fear of their products being subsumed into the pharmaceutical regulatory process, there is a need to understand how so-called "cosmeceuticals" might affect the aging process in skin. Resonance Raman spectroscopy has now been used to study non-invasively the interaction of carotenoid antioxidants with free radicals in the skin.

Read More thumbnail image: Testing times for beta-carotene and relatives Raman clues to cosmeceuticals

Journal Highlight: Raman spectroscopy for the analysis of coal: a review

Date: Mar 7, 2011

Author:

Work published on the Raman characterization of the natural organic matter of coals has been reviewed and preliminary results of the natural inorganic matter of various South African coals were reported.

Read More thumbnail image: Journal Highlight Raman spectroscopy for the analysis of coal a review

Rock and awe: Raman discredits microbial fossils

Date: Mar 1, 2011

Author: David Bradley

The oldest fossils of bacteria ever found were discovered in a rock formation in Western Australia, the discovery led to great excitement that has not abated for two decades. Until now. Raman spectroscopy now shows that what palaeontologists thought were pristine microbial fossils may not be anything more complex than chunks of ancient Australian rock.

Read More thumbnail image: Rock and awe Raman discredits microbial fossils

Golden pop: nanoparticles for SERS

Date: Feb 1, 2011

Author: David Bradley

Gold nanoparticles that resemble tiny popcorn kernels can be produced using a simple two-step process. Researchers at Jackson State University in the US have used these particles in SERS experiments to detect malignant prostate cancer at just the 50-cell level. The same particles can also be activated to kill the cells.

Read More thumbnail image: Golden pop nanoparticles for SERS

Journal Highlight: Femtosecond stimulated Raman spectroscopy

Date: Jan 31, 2011

Author:

Advances in the field of femtosecond stimulated Raman spectroscopy, a new time-resolved structural technique that provides complete vibrational spectra on the ultrafast timescale, are reviewed.

Read More thumbnail image: Journal Highlight Femtosecond stimulated Raman spectroscopy

Fast-track walking pneumonia test: SERS speeds up diagnosis

Date: Jan 5, 2011

Author: David Bradley

A new approach to testing for a common form of pneumonia using nanoparticles to boost SERS signals can cut the time to diagnosis from several days to a mere ten minutes, according to research published in the journal Plos One.

Read More thumbnail image: Fast-track walking pneumonia test SERS speeds up diagnosis

Journal Highlight: Understanding tissue specific compositions of bioenergy feedstocks through hyperspectral Raman imaging

Date: Jan 3, 2011

Author:

Hyperspectral Raman imaging was used to study the tissue/cell type specific distribution of lignin and cellulose polymers within the plant cell walls of two potential bioenergy feedstocks: corn stover and Eucalyptus globulus.

Read More thumbnail image: Journal Highlight Understanding tissue specific compositions of bioenergy feedstocks through hyperspectral Raman imaging
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