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Detecting trace amounts of contaminants or medical biomarkers sooner could safeguard against harm.
Researchers funded by the National Science Foundation are creating a new biosensor that uses laser light, engineered viruses and advanced manufacturing techniques to more accurately detect the smallest amounts possible of biological molecules--in our food, in our water and even in our own blood. Shown here is a cross-sectional view of a circular optical cavity or resonator showing whispering gallery modes total internally reflected along the surface of a fiber.
Credit: Joe Cheeney, University of California-Riverside
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