After passing through the tag and hitting the surface of an object, the terahertz waves are reflected or backscattered and reach a receiver for authentication.Credit: Ruonan Han, Eunseok Lee, et al. Several years ago, MIT researchers invented a cryptographic ID tag that is several times smaller and significantly cheaper than traditional radio frequency tags […]
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Ambient Sensing, a half-day symposium presented by the MIT.nano Immersion Lab, featured talks by MIT faculty and researchers from multiple disciplines who highlighted that sensing and senor technology research is all around us from up in the sky to below the Earth’s surface and deep in the ocean.
A new wake-up receiver communicates using terahertz waves, which enables them to produce a chip less than one-tenth the size of similar devices. Their receiver, which also includes authentication to protect it from a certain type of attack, could help preserve the battery life of tiny sensors or robots.