Researchers at the Georgia Institute of Technology have created a passive motion/contact sensor that detects motion using only sound. Without electricity, electronics, or batteries. The sensors are ...

NASA scientists are beginning to examine ocean trash from a new perspective, not from ships or beaches, but from orbit. The research follows a recent discovery that space-based sensors can detect ...

A compact metalens-based nanophotonic sensor mimics insect compound eyes to detect motion across a 135-degree field of view and predict object trajectories using deep learning. The work, led by ...