A rainbow reveals with colors what otherwise remains hidden: light is "refracted" by transparent matter, in this case water ...

Refraction—the bending of light as it passes through different media—has long been constrained by physical laws that prevent independent control over how light waves along different directions bend.

Researchers at the University of Hong Kong demonstrate negative light refraction with the natural magnetic material CrSBr – an alternative to metamaterials. Normally, when a light beam enters water or ...

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 ...