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Hamamatsu Corp. - Earth Innovations LB 2/24

Optical Gel Senses Chemicals

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Kevin Robinson

PITTSBURGH -- By forming a functionalized gel around an array of colloidal particles, researchers have created a sensor that indicates the presence of specific chemicals by a shift in the gel's optical diffraction. Now they can use optical methods to quickly and reliably determine if a gel sensor has responded to a chemical. Functionalized gel sensors are not new, but scientists have had a difficult time measuring gel response. According to Sanford Asher, whose work with John Holtz at the University of Pittsburgh led to this new method, the gels were not used as chemical sensors before...Read full article

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    Published: January 1998
    chemicalsResearch & TechnologySensors & DetectorsTech Pulse

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