Scientists have demonstrated that negative refraction can be achieved using atomic arrays -- without the need for artificially manufactured metamaterials. Scientists have long sought to control light ...

Scientists have found a way to achieve negative refraction—where light bends the "wrong" way—using carefully arranged atomic ...

The speed of light is determined by the medium (material) through which the light is travelling. Light travels faster in a vacuum than it does in any other medium. Light changes speed as it passes ...

For the first time, scientists have demonstrated that negative refraction can be achieved using atomic arrays—without the ...

When a ray of light is incident ... incident at any other angle, the ray changes direction as it refracts. The dotted line is the normal (perpendicular) to the surface. In refraction calculations ...