Rectennas act a bit like your car antenna. Instead of picking up radio waves, however, the tiny optical devices absorb light and convert it into power. The rectenna featured in today’s top story, generated half a nanowatt – a small amount of power that its inventors hope to increase.

“When you look at Earth from outer space at night with an infrared camera, you notice how much heat we generate,” CU Boulder researcher Amina Belkadi told Tech Briefs in our lead story this week. “Rectennas could generate energy and reduce the usage of batteries at night.”

What do you think? Will Rectennas Reduce Our Need for Batteries?

What do you think?