Imagine a world where smartphones, laptops, wearables, and other electronics are powered without batteries. Researchers from MIT and elsewhere have taken a step in that direction, with the first fully ...

The efficiency of optical rectennas made from carbon nanotube diode arrays can be improved by adding a double insulator layer to them. Doing this also makes the devices stable in air for the first ...

The research team that announced the first optical rectenna in 2015 is now reporting a two-fold efficiency improvement in the devices -- and a switch to air-stable diode materials. The improvements ...

May 18 (UPI) --A new energy-harvesting device developed by engineers at the University of Colorado takes advantage of the ghost-like property of electrons to turn excess heat into usable electricity.

(Nanowerk Spotlight) The rapid proliferation of wireless devices and the Internet of Things (IoT) has been one of the defining technological trends of the 21st century. As billions of smart devices ...

Scientists at CU Boulder have tapped into a poltergeist-like property of electrons to design devices that can capture excess heat from their environment—and turn it into usable electricity. The ...

Rectifying antennas – "rectennas" – are used as parasitic power capture devices that absorb radio frequency (RF) energy and convert it into usable electrical power. Constructing such devices to absorb ...

In today’s edition of the journal Nanotechnology, researchers from Korea’s Sunchon National University and the (also Korean) Paru Printed Electronics Research Institute present something they’re ...

(Nanowerk News) The research team that announced the first optical rectenna in 2015 is now reporting a two-fold efficiency improvement in the devices -- and a switch to air-stable diode materials. The ...

For decades, researchers have theorized that 'optical rectennas' could sit on everything from bakery ovens to dirigibles flying high above Earth to harvest waste heat and turn it into electricity. But ...

The research team that announced the first optical rectenna in 2015 is now reporting a two-fold efficiency improvement in the devices -- and a switch to air-stable diode materials. The improvements ...