A lens-free system produces sharp mid-infrared images even in low light and over long distances, creating new opportunities ...

Researchers have found that under certain conditions, a laser beam can act like an opaque object and cast a shadow, opening new possibilities for technologies that could use a laser beam to control ...

A 3D printer that uses lasers to build up an object in any order, rather than layer by layer, could produce more advanced designs than is currently possible. Existing 3D printers work by depositing ...