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Time for resolution: Single molecule

Date: Sep 1, 2014

Author: David Bradley

For the first time, chemists have succeeded in measuring the vibrational movements of a single molecule with time resolution on the femtosecond scale using time-resolved coherent anti-Stokes Raman scattering.

Read More thumbnail image: Time for resolution Single molecule

Journal Highlight: Raman spectroscopy as an analytical tool for melanoma research

Date: Aug 4, 2014

Author: spectroscopyNOW

Raman spectroscopy was used to study normal and melanoma cells, and wild-type and mutant melanoma cells, to investigate whether the technique could distinguish between different types of cells, identify mutations and evaluate response to anticancer therapy.

Read More thumbnail image: Journal Highlight Raman spectroscopy as an analytical tool for melanoma research

Desiccated E coli: Hibernation in salt

Date: Aug 1, 2014

Author: David Bradley

A serendipitous discovery by the team working on the Raman instrument for the ExoMars rover mission reveals an interaction between microorganisms and salt in which Escherichia coli cells added to a droplet of salt water left to dry out manipulate the process of sodium chloride crystallization to create structures within which they can "hibernate". When the desiccated is rehydrated the bacteria are revived.

Read More thumbnail image: Desiccated E coli Hibernation in salt

Smart phone waveguides: Laser-etched displays

Date: Jul 1, 2014

Author: David Bradley

The first laser-written light-guiding systems have been developed by researchers from Montreal and the New York-based company Corning Incorporated with the aim of etching waveguides into the glass screen of a smartphone. The development could allow layers of sensors, for health monitoring, environmental testing and other applications to be incorporated transparently into the screen without adding to the phone's form factor.

Read More thumbnail image: Smart phone waveguides Laser-etched displays

Journal Highlight: Laboratory real-time and in situ monitoring of mechanochemical milling reactions by Raman spectroscopy

Date: Jun 30, 2014

Author: spectroscopyNOW

The course of mechanochemical transformations at the molecular level were monitored in situ and in real time using Raman spectroscopy and translucent milling vessels.

Read More thumbnail image: Journal Highlight Laboratory real-time and in situ monitoring of mechanochemical milling reactions by Raman spectroscopy

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
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