Electric field polarization orientations and gradients close to near-field scanning optical microscope (NSOM) probes render nano-Raman fundamentally different from micro-Raman spectroscopy. With x-polarized light incident through an NSOM aperture, transmitted light has x, y and z components allowing nano-Raman investigators to probe a variety of polarization configurations. In addition, the str...

An experimental apparatus combining Raman spectroscopy with acoustic levitation, Raman acoustic levitation spectroscopy (RALS), is investigated in the field of physical and chemical analytics. Whereas acoustic levitation enables the contactless handling of microsized samples, Raman spectroscopy offers the advantage of a noninvasive method without complex sample preparation. After carrying out s...

Chemometrics Raman spectroscopy StreamLineTM imaging Tablet imaging Empty ModellingTM multivariate curve resolution (EM-MCR) The quantity of Raman spectroscopy data and the speed at which it can be collected when using fast imaging techniques have made the application of multivariate data analysis techniques – such as chemometrics – an invaluable and powerful tool. By Tim Smith at Renishaw plc ...

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Raman spectroscopy is an established laser-based technology for the quality assurance of pharmaceutical products. Over the past few years, Raman spectroscopy has become a powerful diagnostic tool in the life sciences. Raman spectra allow assessment of the overall molecular constitution of biological samples, based on specific signals from proteins, nucleic acids, lipids, carbohydrates, and inor...

Surface-enhanced Raman spectroscopy (SERS) and femtosecond stimulated Raman spectroscopy (FSRS) have revolutionized the Raman spectroscopy field. SERS provides spectroscopic detection of single molecules, and FSRS enables the acquisition of Raman spectra on the ultrafast time scale of molecular motion. Here, we present the first successful combination of these two techniques, demonstrating surf...

The Raman scattering phenomenon known for more than 80 years, during the last decades is gaining more and more attention in analytical applications and can provide chemical finger prints of cells, tissues or biofluids. In contrast to established analytical techniques, Raman spectroscopy provides label-free, non-destructive, chemically selective and spatially resolved analysis. The high chemical...

Borchert et al., A Noninvasive Glucose Monitor: Preliminary Results in Rabbits, Diabetes Technology& Therapeuticsl(2): 145-151 (1999). Erckens et al.; Raman Spectroscopy for Non-Invasive Characterization of Ocular Tissue: Potential for Detection of Biological Molecules, Abstract, J. of Raman Spectroscopy, 28(5):293-9 (May 1997). Schulze HG et al., Artificial Neural Network and Classical Least-S...

nanocrystalline particles of cerium oxide (ceo2) have been prepared by the chemical precipitation method using cerium nitrate and urea with a molar ratio of 1:2. the results revealed that the formation of ceo2 fine particles is influenced by molar ratio of metal nitrates to fuel. well faceted ceo2 nanoparticles, were synthesized by thermal-assisted dissociation method at reflux temperature in a...