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Raman technique spots early-stage viruses

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In the laboratory, scientists and clinicians have come to rely on Raman spectroscopy because of its ability to provide chemically specific information about biospecimens. A variation on conventional methods, called coherent anti-Stokes Raman scattering (CARS) — in which femtosecond laser pulses cause molecules to vibrate in unison — has been used for identifying anthrax and mold spores, among other applications. Now, in the age the COVID-19 pandemic, the combination of plasmon resonance and Raman scattering is allowing for a practical approach to detecting the presence of virus...Read full article

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