A wearable bioelectronic device increased REM sleep in real-world trials without invasive surgery or medication. A restless night can leave more than fatigue behind. REM sleep plays a central role in emotional processing, stress adaptation and mental recovery, and persistent disruptions to this stage have been linked to conditions including depression, anxiety and post-traumatic stress [...]

Ultrasonic espresso’ made with cold water and high-frequency sound waves uses less energy than the traditional version – and taste tests show it’s just as good.

A new soft ultrasound patch is designed to provide long-term, hands-free monitoring of fetal health in real time. Engineers at the University of California, San Diego, have developed a soft, wearable ultrasound patch that can continuously monitor a fetus for hours at a time while maintaining reliable performance even as the fetus and umbilical cord [...]

A wearable ultrasound patch regulates heartbeats from outside the chest, eliminating invasive surgery.