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A study published in the journal Advanced Materials suggests that miniaturised sensors, mounted directly on a tooth and communicating wirelessly with a mobile device, can transmit information on glucose, salt and alcohol intake, ScienceDaily reported Thursday.
The researchers developed a 2mm squared sensor that can flexibly conform and bond to the surface of a tooth.
The sensor features a central bioresponsive layer, which absorbs the nutrient or other chemicals to be detected, and two outer layers consisting of square-shaped gold rings.
The three layers together act like an antenna, collecting and transmitting waves in the radiofrequency spectrum, according to the news source.
"In theory we can modify the bioresponsive layer in these sensors to target other chemicals -- we are really limited only by our creativity," said corresponding author Fiorenzo Omenetto, adding that "we have extended common RFID [radiofrequency ID] technology to a sensor package that can dynamically read and transmit information on its environment, whether it is affixed to a tooth, to skin or any other surface."
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