More than half a century ago, Sir Roger Penrose envisioned a scenario in which energy could be extracted from a black hole ...

A Hawaii-based company has claimed an energy harvesting breakthrough with a device which it says can convert radio frequency (RF) signals into electricity. Infrgy says its prototype device is able to ...

Add Yahoo as a preferred source to see more of our stories on Google. In a major development, researchers have created a transparent device that can harvest energy from both radio waves and sunlight ...

A team of physicists at the University of Warsaw has built the world’s first all-optical radio receiver powered entirely by laser light. The device, developed by researchers from the Faculty of ...

Overview: Metamaterials control radio waves to improve signal strength and network coverage.Reconfigurable intelligent surfaces increase efficiency while reduci ...