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Graphene: The rising star in Raman spectroscopy

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Marie Freebody, [email protected]

With its numerous appealing qualities, including biocompatibility, chemical inertness and abundance, graphene has long been a popular metal among chemists and physicists alike. Thanks to these properties, it has found its way into new applications ranging from chemical sensors to transistors. Until now, however, its potential as a substrate for Raman enhancement had not been investigated. The challenge was taken up by Zhang Jin and colleagues at Beijing National Laboratory for Molecular Sciences. They found that graphene-based probes did indeed enhance the Raman signal compared with...Read full article

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    Published: February 2010
    Glossary
    raman spectroscopy
    Raman spectroscopy is a technique used in analytical chemistry and physics to study vibrational, rotational, and other low-frequency modes in a system. Named after the Indian physicist Sir C.V. Raman who discovered the phenomenon in 1928, Raman spectroscopy provides information about molecular vibrations by measuring the inelastic scattering of monochromatic light. Here is a breakdown of the process: Incident light: A monochromatic (single wavelength) light, usually from a laser, is...
    surface-enhanced raman scattering
    Surface-enhanced Raman scattering (SERS) is a powerful analytical technique that enhances the Raman scattering signal of molecules adsorbed on or near certain nanostructured surfaces. Raman scattering is a process in which light interacts with molecular vibrations, providing a fingerprint-like spectrum that can be used to identify and characterize chemical compounds. SERS significantly amplifies the Raman signal, making it more sensitive and allowing for the detection of molecules at very low...
    Beijing National Laboratory for Molecular SciencesBiophotonicsgrapheneImagingMarie FreebodymicroanalysisNano LettersOpticsRaman spectroscopyResearch & TechnologySensors & DetectorsSERSsilicon dioxide/siliconsurface-enhanced Raman scatteringTech PulseZhang Jin

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