From Sunlight To Electricity: First Optical Rectenna Created In Lab

Carbon nanitube optical rectenna [Image: Rob Felt, Georgia Tech]

It’s been the dream of visionaries for decades: Sunlight converted into direct current to use for recharging emission-free electric cars. Photovoltaic cells offer that capability today, but now researchers claim to have found a way to improve the efficiency of that process greatly, using a device called a “rectenna.” This combines the functions of… …read more