Conclusion We can see from the graph that as the angle of incidence, i, increases, the angle of refraction, r, also increases. This agrees with our prediction. However, the angle of incidence is not ...

Wrong way: electrons undergoing negative refraction at a p–n junction. (Courtesy: Cory Dean) The negative refraction of electrons in graphene has been seen for the first time in experiments done by ...

Graphene and negative refractive-index materials are two of the hottest topics in physics -- but one might not think they have much in common. Now, however, physicists in the UK and US have proposed ...