A microelectronic sensor may alert doctors to bacterial hazards.
Warning colours: bacteria make silicon wafers glow.
© University of Rochester
Silicon could leave a 100-year-old staining technique standing.
© University of Rochester
Smart bandages could soon alert doctors to the presence of certain bacteria in a wound by glowing different colours. Researchers in the United States have created a tiny device that emits faint light of two colours in response to two types of bug1.
Benjamin Miller, of the University of Rochester in New York State, and colleagues hope that a refined sensor might ultimately generate an instant and easily recognizable array of colours that signify dangerous or antibiotic-resistant strains. So far, the device produces only a very small colour change, which is not detectable with the naked eye.
PHILIP BALL | © Nature News Service
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