Researchers harvest energy from radio waves to power wearable devices

From microwave ovens to Wi-Fi connections, the radio waves that permeate the environment are not just signals of energy consumed but are also sources of energy themselves. An international team of researchers has developed a way to harvest energy from radio waves to power wearable devices.

from Latest Science News -- ScienceDaily https://www.sciencedaily.com/releases/2021/03/210325190246.htm