Internet

New chip brings ultra-low power Wi-Fi connectivity to IoT devices

More portable, fully wireless smart home setups. Lower power wearables. Batteryless smart devices. These could all be made possible thanks to a new ultra-low power Wi-Fi radio developed by electrical engineers at the University ...

Energy & Green Tech

Researchers demonstrate 120-kilowatt wireless charging for vehicles

Researchers at the Department of Energy's Oak Ridge National Laboratory have demonstrated a 120-kilowatt wireless charging system for vehicles—providing six times the power of previous ORNL technology and a big step toward ...

Energy & Green Tech

Tesla's enormous battery amazes in quick outage response

Tesla Motors' grid storage battery in South Australia, switched on at just the beginning of December, has already shown it is up to the job of serving as a backup system in South Australia. Its quick response is the stuff ...

Energy & Green Tech

Device generates light from the cold night sky

An inexpensive thermoelectric device harnesses the cold of space without active heat input, generating electricity that powers an LED at night, researchers report September 12 in the journal Joule.

Security

Researchers invent low-cost alternative to Bitcoin

The cryptocurrency Bitcoin is limited by its astronomical electricity consumption and outsized carbon footprint. A nearly zero-energy alternative sounds too good to be true, but as School of Computer and Communication Sciences ...

Energy & Green Tech

Charging electric vehicles with photovoltaics at home

An electric car that runs on PV power sounds appealing. But is it really possible to enjoy flexibility with a vehicle charged through a home photovoltaic system? An ETH research team has reached some surprising conclusions.

page 2 from 35