Engineering

'Epidermal VR' gives technology a human touch

Imagine holding hands with a loved one on the other side of the world. Or feeling a pat on the back from a teammate in the online game "Fortnite."

Engineering

Liquid metal may point way to wearable ultrasound devices

The best-known byproduct of ultrasound—so named because its frequencies exceed the range of the human ear—is, in fact, not audio but visual: 2D imagery, often of a fetus maturing in the womb. But ultrasound has also found ...

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