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 ...

Negative refraction The lens has been dreamt up by Vadim Cheianov and Vladimir Fal’ko of Lancaster University in the UK and Boris Altshuler of Columbia University in the US. It would consist of two ...

First proposed over thirty years ago, negative index materials bend light in the opposite direction to ordinary materials. However, they were only demonstrated experimentally in 2000. Now, Zhang and ...