New app sheds light on phone usage

A year ago, Northwestern University PhD student John Rula accidentally left his smartphone in a taxi. After exiting the car, he checked his pockets multiple times only to find them empty. That's when the anxiety set in.

Gallium nitride transistor could replace silicon

(PhysOrg.com) -- A Cornell researcher has created an extremely efficient transistor made from gallium nitride, which may soon replace silicon as king of semiconductors for power applications.

Making a better invisibility cloak

The first functional "cloaking" device reported by Duke University electrical engineers in 2006 worked like a charm, but it wasn't perfect. Now a member of that laboratory has developed a new design that ties up one of the ...

New ferroelectric material could give robots muscles

A new type of ferroelectric polymer that is exceptionally good at converting electrical energy into mechanical strain holds promise as a high-performance motion controller or "actuator" with great potential for applications ...

Toward more efficient wireless power delivery

In 2007, MIT researchers announced that they had discovered a novel way of transmitting electricity without the use of wires. Now, the researchers have demonstrated that the system?s efficiency at transmitting energy improves ...

page 7 from 40