Tech

Liquid metal encased in hydrogel makes a promising energy-harvesting device

Enlarge / Researchers at North Carolina State University have created a soft and stretchable device that converts movement into electricity. The device works in wet or dry environments and has a host of potential applications. (credit: Veenasri Vallem) Scientists at North Carolina State University have developed a flexible, stretchy energy-harvesting device solely out of biocompatible […]

Tech

Finger wrap could one day let you power up wearables while you sleep

A new wearable device turns the touch of a finger into a source of power for small electronics and sensors. (video link) Wearables are so hot right now, with consumers scooping up more than 100 million units of smartwatches, fitness trackers, augmented reality glasses, and similar tech in the first quarter of 2021 alone. Sales […]