.... http://www.spectroscopyNOW.com/coi/cda/landing.cda?type=Feature&chId=6 http://www.spectroscopyNOW.com/coi/cma/download.cma?imageType=RssLogo&contentType=Feature&siteId=1&chId=6 http://www.spectroscopynow.com/ http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=23147&type=Feature&page=1 Raman spectroscopy can identify samples of an unknown substance at a crime scene as human saliva during forensic analysis, according to a US study, the technique would preserve DNA evidence. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=23173&type=Feature&page=1 Surface-enhanced Raman spectroscopy (SERS) was used for the identification of natural organic dyes belonging to indigoid and anthraquinone classes in archeological samples. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22953&type=Feature&page=1 Fluorescence line-narrowing and resonance Raman properties of various chlorophyll molecules have been measured in organic solvents. The work sheds new light on one of life's most important biochemical processes - photosynthesis - and might one day allow scientists to take another step closer to emulating the reactions to trap solar energy. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22962&type=Feature&page=1 The Raman spectra of 16 lichen specimens from eight genera growing on basaltic lava and wood substrates on new lava fields on the Kilauea volcano, Kona, Hawaii, have been analysed in terms of the pigments and biomolecules produced in this extreme environment. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22810&type=Feature&page=1 The effect of near infrared wavelengths, 785 nm, using both benchtop and portable instrumentation and benchtop 1064 nm on the Raman spectra of seized drugs-of-abuse were compared. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22753&type=Feature&page=1 Bacterial cell walls are a key target for antibiotics but they can change structure during reproduction. Now, Raman spectroscopy and atomic force microscopy have been used to home in on these changes in a bacterium and so provide important clues about the biochemical changes that occur at the cellular level. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22639&type=Feature&page=1 Raman spectral signatures have been obtained for a series of organic minerals using a compact portable Raman instrument, allowing organic minerals to be used as biomarkers for future exobiological missions such as the ESA mission to Mars. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22618&type=Feature&page=1 Nutritionally useful carotenoids and phenolic compounds increase as olives grow but then decrease as they ripen. Now, researchers have demonstrated that monitoring two Raman bands can help growers keep an eye on these changes and so optimise their product for olive oil production. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22505&type=Feature&page=1 <p>The board of directors of Thermo Fisher Scientific Inc. has appointed Marc N. Casper president, chief executive officer and a director of the company, effective 15 October 2009. Casper currently serves as executive vice president and chief operating officer.</p> <p>This announcement follows the decision of Marijn E. Dekkers to resign as president, chief executive officer and a member of the board, in order to become chief executive officer of Bayer AG.</p> <p><a href="http://www.separationsnow.com/coi/cda/detail.cda?id=22504&type=Feature&chId=0&page=1"><font color="red">Watch our video interview >>></font></a></p> http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22496&type=Feature&page=1 Tip-enhanced Raman spectroscopy has been demonstrated for the first time with both the tip and the sample completely immersed in water, with a proof-of-principle study on thiophenolate self-assembled monolayers on gold surfaces. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22458&type=Feature&page=1 Raman spectroscopy touches on the properties of an organic ionic material, only the second of its type to be synthesised, that apparently undergoes a phase transition at low temperature making it ferroelectric. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22342&type=Feature&page=1 The high-frequency electrical conductance of tape-stripped human skin in vivo can be used to evaluate the hydration profile of <em>Stratum corneum</em> (SC). The conductances correlate well with their water content, as demonstrated by independent confocal Raman spectroscopic measurements. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22276&type=Feature&page=1 A technological mash-up between graphene and the semiconductor gallium arsenide as characterised by optical microscopy and Raman spectroscopy and other techniques could pave the way to hybrid electronics devices that bridge the gap between current silicon circuitry and future molecular electronics. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22194&type=Feature&page=1 Four volumes of the Book of Kells were analysed by micro-Raman spectroscopy using 2 separate laser wavelengths (632.8 and 532 nm). In total, 681 sites were examined, making this the most extensive Raman spectroscopic investigation of a single medieval manuscript. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22158&type=Feature&page=1 Nanoparticles can boost Raman signals sufficiently to allow the simultaneous detection of several biomarkers even deep within tissues of a living animal. The discovery could help in disease diagnostics, biomedical research, and potentially cancer treatment. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22058&type=Feature&page=1 The applicability of Raman spectroscopy and surface-enhanced Raman scattering to the analysis of synthetic dyes commonly found in ballpoint inks was investigated in a comparative study using ten dyes. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=22021&type=Feature&page=1 Raman spectroscopy has shown that organic material may have been 'cooked' in rocky mounds known as stromatolites that have been dated to 3.45 billion years ago. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=21907&type=Feature&page=1 Gold caps on silicon nanowires have been selectively coated with silver by autometallography (electroless deposition) and the different morphologies achieved by changing the conditions of silver deposition were studied by SERS experiments. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=21873&type=Feature&page=1 Scientists in Israel and the US have demonstrated systematic differences in the Raman spectra of individual molecules adsorbed on small as opposed to large nanoparticles. The discovery has the potential to open up a new approach to single molecule studies. http://www.spectroscopyNOW.com/coi/cda/detail.cda?chId=6&id=21623&type=Feature&page=1 Spectral features and biochemical changes in normal, fibroadenoma and infiltrating ductal carcinoma of breast tissues measured using Raman spectra have been correlated using spectroscopic models developed earlier.