The IlluminatIR™ is commonly used with either a diamond contact ATR (attenuated total reflection) or a diffuse reflectance objective. The sample can be viewed, and Raman spectra collected, either through these objectives or through the high quality microscope objectives supplied with the inVia Raman microscope. Simple switching between video view, IR acquisition, and Raman acquisition allows IR...

While several databases with Raman spectra of interest to silver corrosion have been published already, we present a catalogue of Raman spectra of silver compounds, which can be found on corroded silver and silver alloy objects, i.e. not only concerning archaeological and artistic works but all kind of silver items exposed to the atmosphere. The collected Raman spectra of these highly pure (>99...

Photophoretic trapping-Raman spectroscopy (PTRS) is a new technique for measuring Raman spectra of particles that are held in air using photophoretic forces. It was initially demonstrated with Raman spectra of strongly-absorbing carbon nanoparticles (Pan et al. [44] (Opt Express 2012)). In the present paper we report the first demonstration of the use of PTRS to measure Raman spectra of absorbi...

Eumelanin biopolymer synthetized from L-DOPA has been characterized by Raman and Surface Enhanced Raman Spectroscopy (SERS). Although Raman spectra of eumelanin were scarcely resolved, SERS measurements of this biopolymer on nanostructured gold substrate, provided a large enhancement of vibrational peaks related to functional groups adherent to the substrate, so that well resolved vibrational s...

Micro-Raman spectroscopy is a very promising tool for medical applications, thanks to its sensitivity to subtle changes in the chemical and structural characteristics of biological specimens. To fully exploit these promises, building a method of data analysis properly suited for the case under study is crucial. Here, a linear or univariate approach using a R2 determination coefficient is propos...

Raman spectra of germanosilicate core fibers before and after UV irradiation were investigated. Significant changes of the Raman spectra after irradiation indicate transformation of the glass structure. A possible interpretation of the observed changes is proposed.

Raman spectroscopy is a non-invasive, non-destructive technique for the study of the macromolecular composition of tissues. Raman spectra were obtained from intact fresh and paraformaldehyde fixed rabbit lenses and from thin slices prepared from these lenses. In addition the Raman spectrum of an intact 82-yr-old human lens was compared with a slice of the same lens. It appeared that fixation wi...