Researchers took inspiration from the way turkey skin color is altered to create a new sensor that can change color when exposed to volatile chemicals. Credit: Photos by Valerie Burtchett
Bio-inspired sensors are made from bacteriophages that mimic the collagen fibers in turkey skin. When exposed to target chemicals, the collagen-like bundles expand or contract, generating different colors. The researchers also created a mobile app to be used with camera phones to help analyze the sensor's color bands. Credit: Courtesy of the Seung-Wuk Lee Laboratory
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The turkey-inspired biosensors were exposed to a range of volatile organic compounds, including hexane, isopropyl alcohol and methanol, as well as vapor of the explosive chemical TNT, at concentrations of 300 parts per billion...