T-Ray chip creators Kaushik Sengupta and Ali Hajimiri
One of the new chips was used to non-destructively image a bullet and a knife blade hidden in a stuffed toy
Some of Caltech's new T-Ray chips, with a penny for scale
Terahertz technology (or T-Ray, for short), sounds like something out of a science fiction movie. It utilizes high-frequency terahertz waves – which are located between microwaves and far-infrared radiation on the electromagnetic spectrum – to see through solid matter without the harmful ionizing radiation of X-rays. Although T-Ray devices have yet to become compact and affordable, that could soon change thanks to new silicon microchips developed at the California Institute of Technology.
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