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Spaghettilike surface makes stronger SERS sensor

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Spaghettilike arrays of gold-coated metallic carbon nanotubes can amplify the signals of surface-enhanced Raman spectroscopy (SERS) enough to allow the performance of analyses that are more reliable, sensitive and cost-effective. Potential applications include real-time point-of-care monitoring of physiological levels, fast screening of drugs and toxins in law enforcement, and early detection of biological weapons. Previously, the detection limit of common SERS systems was in the nanomolar range (one billionth of a mole), providing adequate signal strength in isolated cases only, and...Read full article

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    Published: November 2013
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    surface-enhanced raman spectroscopy
    Surface-enhanced Raman spectroscopy (SERS) is an analytical technique that combines the principles of Raman spectroscopy with the enhancement provided by nanostructured metallic surfaces. Raman spectroscopy is a method used to study vibrational, rotational, and other low-frequency modes in a system by measuring the inelastic scattering of monochromatic light, typically from a laser source. SERS enhances the Raman signal by many orders of magnitude, enabling the detection and identification of...
    Ali AltunAmericasBiophotonicsBioScancarbon nanotubesETH ZurichEuropeHyung Gyu Parkimaging and sensingLawrence Livermore National LaboratoryLLNLnanoNewsplasmonic sensorRaman-scattered lightResearch & TechnologySERSsurface-enhanced Raman spectroscopyTiziana Bond

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