Advances in spectroscopic methods for biological crystals. 2. Raman spectroscopy

Advances in spectroscopic methods for biological crystals. 2. Raman spectroscopy

A Raman microspectrophotometer is described that allows the spectroscopic investigation of protein crystals under exactly the same conditions as those used for X-ray data collection. The concept is based on the integration of the Raman excitation/collection optics into a microspectrophotometer built around a singleaxis diffractometer and a cooling device. It is shown that Raman spectra of outst...

A RIGOROUS COMPARISON OF METHODS FOR MULTI-WALLED CARBON NANOTUBES PURIFICATION USING RAMAN SPECTROSCOPY

Multi-walled carbon nanotubes (MWNT’s) were synthesized using chemical vapor deposition (CVD) method in a fluidized bed reactor under the flow of methane and hydrogen gases. A Cobalt-molybdenum/magnesium oxide (Co-Mo/MgO) nanocatalyst was used as the catalyst of the process. The samples were analyzed using scanning electron microscopy (SEM) and X-ray diffraction (XRD) analyses. The effects of d...

Advances in Analytical Resonance Raman Spectroscopy

• Exploring of the discrimination power of deep-UV RRS (excitation below 260 nm). This offers higher sensitivity and reduces fluorescence interference, but results in a reduced spectral information content Nevertheless, we could discriminate pyrene derivatives based on their RRS spectra.. With state-of-the-art computational methods we could simulate RRS spectra using linearresponse time-depende...

Recent Advances in Tip-Enhanced Raman Spectroscopy.

Tip-enhanced Raman spectroscopy (TERS) has experienced tremendous growth in the last 5 years. Specifically, TER imaging has provided invaluable insight into the spatial distribution and properties of chemical species on a surface with spatial resolution that is otherwise unattainable by any other analytical method. Additionally, there has been further development in coupling ultrafast spectrosc...

High Performance Method for Skin Roughness Detection Using Raman Spectroscopy