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Search results for raman dye

Optics & Photonics Apr 27, 2017

'Volumetric' imaging method reveals chemical content

A "chemical imaging" system that uses a special type of laser beam to penetrate deep into tissue might lead to technologies that eliminate the need to draw blood for analyses including drug testing and early detection of ...

Condensed Matter Mar 24, 2017

Surprising twist in confined liquid crystals: A simple route to developing new sensors

Researchers at Georgia Institute of Technology have found a material used for decades to color food items ranging from corn chips to ice creams could potentially have uses far beyond food dyes.

Nanophysics Feb 13, 2017

Luminescence switchable carbon nanodots follow intracellular trafficking and drug delivery

Tiny carbon dots have, for the first time, been applied to intracellular imaging and tracking of drug delivery involving various optical and vibrational spectroscopic-based techniques such as fluorescence, Raman, and hyperspectral ...

Optics & Photonics Dec 1, 2016

New ultra-high density optical storage technology

According to current estimates, dozens of zettabytes of information will be stored electronically by 2020, which will rely on physical principles that facilitate the use of single atoms or molecules as basic memory cells. ...

Bio & Medicine Oct 3, 2016

New system can detect cocaine at low concentrations

Researchers from Valencia and the Basque Country have developed a new method to detect cocaine and mycoplasma at very low concentrations. It has been designed as an alternative for use in laboratories and is potentially more ...

Nanomaterials Jul 22, 2016

Ultrasensitive sensor using N-doped graphene

A highly sensitive chemical sensor based on Raman spectroscopy and using nitrogen-doped graphene as a substrate was developed by an international team of researchers working at Penn State. In this case, doping refers to introducing ...

Analytical Chemistry Dec 1, 2015

State-of-the-art science reveals secrets of 19th century fashion industry

The dye industry of the 19th century was fast-moving and international, according to a state-of-the-art analysis of four purple dresses. The study, published in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy, ...

Nanomaterials Nov 4, 2015

Novel 'crumpling' of hybrid nanostructures increases SERS sensitivity

By "crumpling" to increase the surface area of graphene-gold nanostructures, researchers from the University of Illinois at Urbana-Champaign have improved the sensitivity of these materials, opening the door to novel opportunities ...

Analytical Chemistry Nov 2, 2015

New imaging technology is advance for medical diagnostics, research

A team of researchers has demonstrated a new type of imaging system that reveals the chemical composition of living tissue for medical diagnostics and cellular studies.

Bio & Medicine Aug 31, 2015

Probe enables investigation of tumors using complementary imaging techniques

An organic dye that can light up cancer cells for two powerful imaging techniques providing complementary diagnostic information has been developed and successfully tested in mice by A*STAR researchers.

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