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Journal Highlight: Raman ChemLighter: Fiber‐optic Raman probe imaging in combination with augmented chemical reality

Date: Apr 2, 2019

Author: spectroscopyNOW

An approach for Raman imaging using a handheld fiber‐optic probe, which is built around computer vision‐based assessment of positional information and simultaneous acquisition of spectroscopic information, allows the creation of an augmented chemical reality image of the molecular distribution of the sample surface in real time.

Read More thumbnail image: Journal Highlight Raman ChemLighter Fiberoptic Raman probe imaging in combination with augmented chemical reality

Streaming Raman: Movie recommendation algorithm speeds up spectroscopy

Date: Apr 1, 2019

Author: David Bradley

An algorithm originally developed for a movie preference prediction competition has been adapted to acquire Raman spectra from biological tissues at unprecedented speeds.

Read More thumbnail image: Streaming Raman Movie recommendation algorithm speeds up spectroscopy

Journal Highlight: Analysis of Raman spectral characteristics of chemical warfare agents by using 248‐nm UV Raman spectroscopy

Date: Mar 6, 2019

Author: spectroscopyNOW

Raman spectra of 18 chemical agents, including major chemical warfare agents, have been measured using a 248‐nm deep‐UV light source, confirming that the technique could be the main method for quickly and accurately detecting and identifying CWA contamination.

Read More thumbnail image: Journal Highlight Analysis of Raman spectral characteristics of chemical warfare agents by using 248nm UV Raman spectroscopy

Cauliflower SERS: Vegetable substrate inspiration

Date: Mar 1, 2019

Author: David Bradley

Using surface-enhanced Raman spectroscopy (SERS) for multiple targets simultaneously remains something of a challenge. Now, three-dimensional substrate for the technique inspired by the fractal structure of the cauliflower has been developed to allow detection of several mycotoxins at the same time.

Read More thumbnail image: Cauliflower SERS Vegetable substrate inspiration

Journal Highlight: Real‐time Raman analysis of cleaning solution: Determination of Al/Alq3 residue in cleaning mixture

Date: Feb 7, 2019

Author: spectroscopyNOW

A real‐time method employing Raman spectroscopy has been used for the quantitative analysis of organic and inorganic residues in a cleaning solution comprising a mixture of anionic and nonionic surfactant agents, potassium hydroxide and stabilizing agents.

Read More thumbnail image: Journal Highlight Realtime Raman analysis of cleaning solution Determination of AlAlq3 residue in cleaning mixture

Raman vs photoluminescence: Weighing up nano light effect

Date: Feb 1, 2019

Author: David Bradley

Shed light on a metal nanoparticle and you get photons back but usually of a different wavelength to the incident radiation. The case for this being photoluminescence rather than the Raman effect has now been put by chemists Stephan Link and Yi-Yu Cai of Rice University.

Read More thumbnail image: Raman vs photoluminescence Weighing up nano light effect

Curved surface sensing: SERS for neurotransmitters

Date: Jan 8, 2019

Author: David Bradley

The long-known problem of templating a highly curved surface for the deposition of dense and well-dispersed nanoparticles has been solved by a research collaboration based in Canada and Germany, putatively paving the way for surface-enhanced Raman scattering optophysiology for sensing neurotransmitters.

Read More thumbnail image: Curved surface sensing SERS for neurotransmitters

Journal Highlight: Superficial‐Layer‐Enhanced Raman Scattering (SLERS) for depth detection of noncontact molecules

Date: Jan 8, 2019

Author: spectroscopyNOW

A new Raman enhancement system, superficial‐layer‐enhanced Raman scattering (SLERS), has been prepared for depth detection of noncontact molecules by covering elongated tetrahexahedral gold nanoparticle arrays with a superficial perovskite film.

Read More thumbnail image: Journal Highlight SuperficialLayerEnhanced Raman Scattering SLERS for depth detection of noncontact molecules

Journal Highlight: A database of Raman spectra of precious gemstones and minerals used as cut gems obtained using portable sequentially shifted excitation Raman spectrometer

Date: Nov 26, 2018

Author: spectroscopyNOW

Raman spectra of 42 minerals such as chrysoberyl, diamond, emerald, garnet, ruby and topaz that are used as gemstones in gemmology or works of art have been recorded using a portable sequentially shifted excitation Raman spectrometer.

Read More thumbnail image: Journal Highlight A database of Raman spectra of precious gemstones and minerals used as cut gems obtained using portable sequentially shifted excitation Raman spectrometer

Coloured eggshells: Raman traces dinosaur egg pigmentation

Date: Nov 1, 2018

Author: David Bradley

Raman spectroscopy has been used to demonstrated that adding pigment to eggs evolved only once and in the dinosaurs and the process is the same as used by the many thousands of bird species we see around the world today.

Read More thumbnail image: Coloured eggshells Raman traces dinosaur egg pigmentation
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