Scientists have developed an imaging chip that could equip future smartphones with “Superman-inspired” X-ray vision — albeit operating within a much more limited range than the caped Kryptonian superhero.
The experimental chip consists of an array of three sensor pixels that emit and receive high-frequency radio signals in the millimeter-wave (mmWave) band of the electromagnetic spectrum. Signals reflected back from the target object are then amplified and mixed by onboard components, enabling outlines of the object to be viewed on a display.
In tests, the chip could detect an object behind cardboard at a distance of around 0.39 inches (1 centimeter). The researchers published their findings Jan. 5 in the journal IEEE Transactions on Terahertz Science and Technology.
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