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Journal Highlight: Identification of aqueous pollen extracts using surface enhanced Raman scattering (SERS) and pattern recognition methods

Date: Feb 1, 2016

Author: spectroscopyNOW

SERS on substrates of gold nanoparticles in aqueous suspension has been used for the reliable characterization and identification of pollen type in aqueous extracts, which will improve allergy warning programs.

Read More thumbnail image: Journal Highlight Identification of aqueous pollen extracts using surface enhanced Raman scattering SERS and pattern recognition methods

Raman art: Pigment revelations

Date: Feb 1, 2016

Author: David Bradley

Florentine artist Giotto is well known for his innovative naturalism, his emotive faces and artistic skills in depicting space. Samples analysed with micro-Raman spectroscopy, scanning electron microscopy with energy dispersive X-ray analysis (SEM-EDX), polarized light microscopy, and electron backscatter diffraction, have now revealed much about the blend of pigments he used in his art.

Read More thumbnail image: Raman art Pigment revelations

Journal Highlight: Non-invasive imaging of cellulose microfibril orientation within plant cell walls by polarized Raman microspectroscopy

Date: Jan 10, 2016

Author: spectroscopyNOW

The distribution of microfibril orientation in cellulose plant cell walls in terms of director angle and anisotropy magnitude has been measured by polarized Raman microspectroscopy.

Read More thumbnail image: Journal Highlight Non-invasive imaging of cellulose microfibril orientation within plant cell walls by polarized Raman microspectroscopy

Going with the grain: Raman takes a look

Date: Jan 7, 2016

Author: David Bradley

Raman microspectroscopy can reveal the orientation distributions of individual grain domains within a crystalline material as well as scanning electron microscopy.

Read More thumbnail image: Going with the grain Raman takes a look

Journal Highlight: Toward a Raman/FORS discrimination between Art Nouveau and contemporary stained glasses from CdSxSe1−x nanoparticles signatures

Date: Dec 9, 2015

Author: spectroscopyNOW

Raman and fiber optics reflectance spectroscopy has been used to study the nanostructures of six samples of historical glass produced between the late 1920s and modern day.

Read More thumbnail image: Journal Highlight Toward a RamanFORS discrimination between Art Nouveau and contemporary stained glasses from CdSxSe1x nanoparticles signatures

Cavity optomechanics: SERS boost

Date: Dec 1, 2015

Author: David Bradley

The tools and concepts of cavity optomechanics can be exploited at the molecular scale to overcome the sensitivity limitations of SERS, surface enhanced Raman scattering, according to work undertaken at École Polytechnique Fédérale de Lausanne (EPFL).

Read More thumbnail image: Cavity optomechanics SERS boost

Journal Highlight: Avoiding misidentification of bands in planetary Raman spectra

Date: Nov 15, 2015

Author: spectroscopyNOW

Raman spectra were measured from a number of minerals that are Mars analogues to identify components that might cause spectral ambiguity, highlighting where such confusion may occur and identifying the most useful bands for differentiation.

Read More thumbnail image: Journal Highlight Avoiding misidentification of bands in planetary Raman spectra

Laser and chips: Raman is a diamond

Date: Nov 1, 2015

Author: David Bradley

US researchers have used diamond to develop a new class of Raman laser sufficiently compact to fit on a photonic chip. The device uses a nanoscopic diamond resonator shaped like a racetrack to convert one frequency of laser light to an entirely different range of wavelengths, opening up new options for broadband data communications and many other applications.

Read More thumbnail image: Laser and chips Raman is a diamond

Journal Highlight: Insights into the kinetics of methane hydrate formation in a stirred tank reactor by in situ Raman spectroscopy

Date: Oct 15, 2015

Author: spectroscopyNOW

The kinetics of methane hydrate formation in a stirred tank were followed by the simultaneous application of macroscopic and microscopic measurements, aided by in situ Raman spectroscopy.

Read More thumbnail image: Journal Highlight Insights into the kinetics of methane hydrate formation in a stirred tank reactor by insitu Raman spectroscopy

Martian chronicled: By Raman

Date: Oct 1, 2015

Author: David Bradley

Seven samples of Icelandic tephra minerals were analysed using X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared (FTIR) as a proxy for Martian rocks to show how a comprehensive library of spectra might be built  up ahead of a fact-finding mission to the Red Planet.

Read More thumbnail image: Martian chronicled By Raman
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