What Are Capacitors and Will They Really Charge Your Phone in Seconds?

Your phone died. Again. In these scenarios, who among us has not dreamed the dream of a future where our devices charge instantly and last forever. As capacitors—or even more exciting, ultracapacitors—get better and better at storing energy, they could replace batteries and realize at least one half of that dream. »2/02/15 1:34pm2/02/15 1:34pm

Scientists call their discovery a 'perfect' invisibility cloak

Functional "cloaking" devices have been around since 2006, but they're far from perfect. All attempts so far have failed to avoid at least some partial light and reflectivity — what has resulted in an unconvincing effect. Part of the problem is finding a way to hide objects in wavelengths longer than the human eye… »11/12/12 11:00am11/12/12 11:00am

New Adhesive Microfiber Gloves Let You Scale Glass Walls

Soon we'll have special gloves and shoes that allow us to climb smooth, vertical surfaces — and even walk across ceilings. A team of researchers at UC Berkeley has created a plastic microfiber that imitates the "stickiness" of gecko feet, which are covered in tiny hairs that attach to smooth surfaces. Already, the… »1/31/08 10:30am1/31/08 10:30am

Atomic Structures Captured by New, Ultra-Powerful Microscope

This image shows the precise arrangement of atoms that form a bridge between two gold crystals. Until yesterday, you would not have been able to see that image — at least, not with such clarity and color. It's the product one of the world's most powerful transmission electron microscopes, installed yesterday at UC… »1/23/08 10:20am1/23/08 10:20am