The past decade has seen several impressive demonstrations of metamaterials that exhibit negative refractive indices. Such studies were originally performed in the microwave region, and there have ...

Recent experiments that demonstrate the negative refraction of light could bring a heated scientific debate to a close, and give negative-index materials a positive future Figure 1: Negative-index ...

First proposed over thirty years ago, negative refractive index materials bend light in the opposite direction to ordinary materials. However, they were not demonstrated experimentally until 2000.