WiFi 'napping' doubles phone battery life

A Duke University graduate student has found a way to double the battery life of mobile devices – such as smartphones or laptop computers – by making changes to WiFi technology.

Do-it-yourself invisibility with 3-D printing

Seven years ago, Duke University engineers demonstrated the first working invisibility cloak in complex laboratory experiments. Now it appears creating a simple cloak has become a lot simpler.

High-speed quantum encryption may help secure the future internet

Recent advances in quantum computers may soon give hackers access to machines powerful enough to crack even the toughest of standard internet security codes. With these codes broken, all of our online data—from medical ...

A mutational timer is built into the chemistry of DNA

If you had to copy billions of letters from one sheet of paper to another, you'd probably make a few mistakes. So it might not come as a surprise that when DNA makes a copy of its three-billion-base genetic code, it can slip ...

Absorbing electromagnetic energy while avoiding the heat

Electrical engineers at Duke University have created the world's first electromagnetic metamaterial made without any metal. The device's ability to absorb electromagnetic energy without heating up has direct applications ...

Is there a limit to human endurance? Science says yes

From the Ironman triathlon to the Tour de France, some competitions test the limits of even the toughest endurance athletes. Now, a new study of energy expenditure during some of the world's longest, most grueling sporting ...

Copper ions flow like liquid through crystalline structures

Materials scientists have sussed out the physical phenomenon underlying the promising electrical properties of a class of materials called superionic crystals. A better understanding of such materials could lead to safer ...

page 2 from 92