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Contact: Neal Singer
DOE/Sandia National Laboratories

Ronen Polsky, Sandia National Laboratories

Caption: Sandia National Laboratories researcher Ronen Polsky holds a prototype of a microneedle fluidic chip device able to selectively detect and painlessly measure electrolytes in the interstitial fluids that bathe skin cells. It features nine sampling needles, each only 800 millionths of a meter (microns) in height, and beneath them, a fluidic channel that can draw interstitial fluid over nine gold disk electrodes. Each disk can be tailored to detect a different analyte. The visible rectangular gold pads are electrical contacts.

Credit: photo by Randy Montoya

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Related news release: Prototype electrolyte sensor to provide immediate read-outs

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