Microrings: The Tech to Make Everything Work Wirelessly?

Most things gadgety are seemingly wirelessly enabled in one way or another, and it's pretty clear that soon everything will be. Now physicists have worked out a way to make it all happen: Microrings, which are tiny radio systems. With lasers!

The image above is a representation of the microrings that boffins at Purdue University have created: Each is a miniscule (10 micron) radio transmitter, crafted into a solid-state device. The tiny circuits are actually activated by 100 femtosecond...