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Twisting the light away

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Reducing the size of spectroscopic biosensors by integrating waveguides into microchannel systems is generally a good idea, but it is limited because the beam from the light source typically intersects with the analyte at a relatively small window. However, Linan Jiang and Stanley Pau of the University of Arizona, Tucson, College of Optical Sciences, devised a biosensor with a twist, maximizing the light-analyte interaction area by using a long spiral waveguide comprising several loops. By forming a waveguide alongside a fluidic channel in a spiral configuration, researchers at the...Read full article

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    Published: May 2007
    College of Optical SciencesFeaturesintegrating waveguidesSensors & Detectorsspectroscopic biosensorTucsonUniversity of Arizona

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