March 26, 2018
by Mario L. Major, Interesting Engineering
A new sensor has been developed that can track what you are eating — and no, it doesn’t involve surveillance, intelligence operatives or robots.
The tiny sensors, which measure only 2 mm by 2mm, were created by a team of researchers from the Tufts University School of Engineering. The sensors are mounted directly to the tooth. Information about everything from salt, glucose and even alcohol consumption can be easily and efficiently collected. Best of all? This tracking happens in real time.
Not only are the wearables smaller and less bulky than previous sensors of the same kind, they are able to transmit this important data wirelessly thanks to the use of radiofrequency technology. The sensor is composed of three combined layers which together constantly cancel out, reflect back, and later transmit, various data that is collected. The innermost, central layer acts as an agent for simply taking in the chemicals and nutrients that come into contact with the sensor, while the other two layers towards the outside —in the shape of a pair of square gold rings, changes color in response to the spectrum of radiofrequency waves that reflect the foods in the mouth.
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