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Journal Highlight: Multiwavelength surface-enhanced Raman spectroscopy using rainbow trapping in width-graded plasmonic gratings

Date: Mar 5, 2018

Author: spectroscopyNOW

Plasmonic gratings of rectangular groove profile with gradient in the groove width perform as unique SERS substrates by simultaneously confining multiple laser wavelengths within the visible and near-infrared regime inside their rectangular nanotrenches.

Read More thumbnail image: Journal Highlight Multiwavelength surface-enhanced Raman spectroscopy using rainbow trapping in width-graded plasmonic gratings

Green catalyst: Hybrid approach

Date: Mar 1, 2018

Author: David Bradley

The noble metal palladium is used to drive catalytic processes in the manufacture of almost three-quarters of pharmaceuticals. Now, a more environmentally benign approach has been developed by US chemists who have used Raman and other techniques to study their "green" catalyst.

Read More thumbnail image: Green catalyst Hybrid approach

Chalk one up to Raman: World's oldest crayon

Date: Feb 1, 2018

Author: David Bradley

Micro-Raman has been used to analyse ochre artefacts from Mesolithic palaeo-lake Flixton ostensibly in modern-day Yorkshire. The study reveals that our ancestors may have used ochre crayons to decorate animals skins or make other art.

Read More thumbnail image: Chalk one up to Raman Worlds oldest crayon

Journal Highlight: Raman-based technique for measuring thermal conductivity of graphene and related materials

Date: Jan 29, 2018

Author: spectroscopyNOW

A Raman spectroscopic method of measuring thermal conductivity of thin films has been described and the results achieved for graphene and other two-dimensional materials have been reviewed.

Read More thumbnail image: Journal Highlight Raman-based technique for measuring thermal conductivity of graphene and related materials

Raman boost: Low-cost solutions

Date: Jan 5, 2018

Author: David Bradley

Arranging nanoparticles on nanowires can enhance surface-enhanced Raman spectroscopy (SERS) by exploiting electromagnetic fields to boost scattering and thus sensitivity of standard dyes, such as R6G, by many times, according to researchers in India.

Read More thumbnail image: Raman boost Low-cost solutions

Journal Highlight: Recent advances in linear and non-linear Raman spectroscopy. Part XI

Date: Jan 4, 2018

Author: spectroscopyNOW

This annual review provides an overview of advances in Raman spectroscopy as reflected in papers published each year in the Journal of Raman Spectroscopy and related journals.

Read More thumbnail image: Journal Highlight Recent advances in linear and non-linear Raman spectroscopy_ Part XI

Journal Highlight: Coordinated EDX and micro-Raman analysis of presolar silicon carbide: A novel, nondestructive method to identify rare subgroup SiC

Date: Jan 1, 2018

Author: spectroscopyNOW

A novel method to nondestructively identify presolar SiC grains has employed backscattered electron-energy dispersive X-ray and micro-Raman analyses using high initial 26Al/27Al ratios and extreme 13C-enrichments.

Read More thumbnail image: Journal Highlight Coordinated EDX and micro-Raman analysis of presolar silicon carbide A novel nondestructive method to identify rare subgroup SiC

Germanium-tin nanoparticles: Correlated with Raman spectroscopy

Date: Dec 1, 2017

Author: David Bradley

Raman and photoluminescence spectroscopies have been used to quantify lattice strain and photoluminescence behaviour in tin nanoparticles. The investigation reveals a correlation between the amount of tin in the nanoparticle core and how well the core's lattice matched that of its cadmium sulfide outer shell.

Read More thumbnail image: Germanium-tin nanoparticles Correlated with Raman spectroscopy

Journal Highlight: In vivo Raman spectroscopy–assisted early identification of potential second primary/recurrences in oral cancers: An exploratory study

Date: Nov 27, 2017

Author: spectroscopyNOW

Higher rates of local recurrences ascribable to field cancerization that occur with oral cancers have been explored by Raman spectroscopy, which can identify oral precancers, cancers, and field cancerization in humans and micro-sized mechanical irritation-induced tumors in animals.

Read More thumbnail image: Journal Highlight In vivo Raman spectroscopyassisted early identification of potential second primaryrecurrences in oral cancers An exploratory study

Heart stopping science: Raman sensor

Date: Nov 1, 2017

Author: David Bradley

A new device that uses resonance Raman spectroscopy can determine whether the body's tissues are adequately oxygenated and if placed on the heart, predict cardiac arrest in critically ill patients.

Read More thumbnail image: Heart stopping science Raman sensor
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