Using multiwall carbon nanotubes, researchers at Georgia Institute of Technology have created what they say are the first optical rectennas–antennas with rectifiers that produce DC current. The work ...

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 ...

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 ...

When we think of solar-based energy, we usually associate it with electricity-generating solar cells; solar-based heating systems using a working fluid; solid-state thermoelectric-based conversion; or ...

Engineers at the Georgia Institute of Technology have developed a new form of technology that combines two well-established technologies — a rectifier and an antenna — to create a device capable of ...

video: Using nanometer-scale components, researchers have demonstrated the first optical rectenna, a device that combines the functions of an antenna and a rectifier diode to convert light directly ...

This fancy-looking slab is the world’s first optical rectenna, a small device that’s part antenna, part rectifier diode — and it’s able to convert light directly into DC current. Developed by ...

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 ...

Using nanometer-scale components, researchers have demonstrated the first optical rectenna, a device that combines the functions of an antenna and a rectifier diode to convert light directly into DC ...

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 ...

Developed by engineers at the Georgia Institute of Technology, optical rectennas use carbon nanotubes that act as antennas to capture light from the sun or other sources. As the waves of light hit the ...