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Raman skeleton key: Universal SERS substrate

Date: Jul 1, 2015

Author: David Bradley

Commonly used substrates for surface-enhanced Raman spectroscopy (SERS) function only at specific excitation wavelengths; which means different substrates for different tasks. consumes more biological/chemical materials, substrates, and measurement time. An ultrabroadband super-absorbing metasurface has been developed by researchers in China and the US. The system works as a universal SERS substrate for low cost and high performance sensing with much lower consumption of SERS substrates as well as cutting...

Read More thumbnail image: Raman skeleton key Universal SERS substrate

Journal Highlight: Dielectrophoretic positioning of single nanoparticles on atomic force microscope tips for tip-enhanced Raman spectroscopy

Date: Jun 8, 2015

Author: spectroscopyNOW

The successful positioning of an individual plasmonic nanoparticle on a commercial atomic force microscope tip by dielectrophoresis for tip-enhanced Raman spectroscopy has been demonstrated.

Read More thumbnail image: Journal Highlight Dielectrophoretic positioning of single nanoparticles on atomic force microscope tips for tip-enhanced Raman spectroscopy

Under pressure: Raman hints on superconductivity

Date: Jun 1, 2015

Author: David Bradley

A combination of Raman spectroscopy, X-ray studies and a theoretical examination have found a plausible explanation for the structural changes that must occur for iron arsenide compounds to become superconducting.

Read More thumbnail image: Under pressure Raman hints on superconductivity

Journal Highlight: Pilot study: Raman spectroscopy in differentiating premalignant and malignant oral lesions from normal mucosa and benign lesions in humans

Date: May 4, 2015

Author: spectroscopyNOW

Tissue-based molecular signatures measured by Raman spectroscopy have been be used to differentiate premalignant and malignant lesions from normal mucosa or benign lesions.

Read More thumbnail image: Journal Highlight Pilot study Raman spectroscopy in differentiating premalignant and malignant oral lesions from normal mucosa and benign lesions in humans

Zig and Zag: Graphene style

Date: May 1, 2015

Author: David Bradley

Raman spectroscopy has been used in a study of the carbon material graphene to show how one can increase the amount of electric charge that could be stored.

Read More thumbnail image: Zig and Zag Graphene style

Journal Highlight: SERS-based competitive immunoassay of poly-γ-D-glutamic acid for highly sensitive detection of anthrax biomarker

Date: Apr 8, 2015

Author: spectroscopyNOW

A SERS-based competitive immunoassay platform has been devised for quantitative evaluation of the anthrax marker poly-γ-D-glutamic acid.

Read More thumbnail image: Journal Highlight SERS-based competitive immunoassay of poly--D-glutamic acid for highly sensitive detection of anthrax biomarker

So, near and yet so far: Stable HGNs for Raman

Date: Apr 1, 2015

Author: David Bradley

Researchers have found a way to stabilise hollow gold nanospheres (HGNs) so that their unique combination of properties can be utilised as nanotags more widely in Surface Enhanced Raman Spectroscopy (SERS) for biomedical applications.

Read More thumbnail image: So near and yet so far Stable HGNs for Raman

Journal Highlight: Identifying the crystalline orientation of black phosphorus using angle-resolved polarized Raman spectroscopy

Date: Mar 2, 2015

Author: spectroscopyNOW

Angle-resolved polarized Raman spectroscopy was used to identify the crystal orientation of black phosphorus sheets, that is, the zigzag and armchair directions.

Read More thumbnail image: Journal Highlight Identifying the crystalline orientation of black phosphorus using angle-resolved polarized Raman spectroscopy

Raman spectroscopy: Shedding light on brain surgery

Date: Mar 1, 2015

Author: David Bradley

A new, hand-held Raman spectroscopic probe technique developed by scientists at Montreal Neurological Institute and Hospital, and Polytechnique Montréal, Canada, could allow surgeons to home in on almost all brain cancer cells.

Read More thumbnail image: Raman spectroscopy Shedding light on brain surgery

Journal Highlight: Automatic standardization method for Raman spectrometers with applications to pharmaceuticals

Date: Feb 1, 2015

Author: spectroscopyNOW

An method based on automatic peak detection, Lorentzian fitting and polynomial fitting has been developed for aligning Raman spectra, which can significantly reduce or eliminate systematic differences between spectrometers.

Read More thumbnail image: Journal Highlight Automatic standardization method for Raman spectrometers with applications to pharmaceuticals
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