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 ...

“Demonstration of resonant tunneling effects in metal-double-insulator-metal (MI 2 M) diodes,” Amina Belkadi, Ayendra Weerakkody, & Garret Moddel, Nature ...

Any type of rectifying antenna is known as a rectenna, and they've been around in various forms since the 60s. This particular rectenna, however, was developed recently by researchers from Korea’s ...

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 ...

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 ...

Volvo Technology Japan Co., Ltd. and Nippon Dengyo tools, aim to commercialize wireless power transmission. It is essential to the spread of environmentally friendly electric trucks and buses. Power ...

Silicon solar cells account for the majority of solar cells in the world today, and whilst they are useful and effective they actually only work at a 10% - 20% efficiency rate; some have been produced ...

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 ...

Researchers built a small, flexible device that harvests wi-fi, bluetooth and cellular signals, and turns them into DC electricity. Christopher Intagliata reports. One of the biggest drawbacks to ...

IOP Science – Wireless power transmission to inexpensive and disposable smart electronic devices is one of the key issues for the realization of a ubiquitous society where sensor networks such as RFID ...