Engineers have built a camera that does not need lenses to focus light. It can switch from a fish-eye to a telephoto lens instantaneously. Traditional cameras -- even those on the thinnest of cell ...

Scientists have developed a flexible battery as thin as a human cornea, which stores electricity when it is immersed in saline solution, and which could one day power smart contact lenses. Scientists ...

Researchers developed a new ultra-thin planar (flat) "metalens" that can potentially replace the stacked, bulky lenses used in telescopes, microscopes, smartphones, cameras and other gadgets. Despite ...