 Photonic metamaterial

Photonic metamaterials are artificial structures engineered to manipulate electromagnetic waves, particularly light, in ways that are not possible with conventional materials. These materials are designed at the micro- or nanoscale to achieve specific optical properties through their unique configurations and arrangements rather than their chemical composition. The primary characteristics of photonic metamaterials include: 1. **Negative Index of Refraction**: Some photonic metamaterials can exhibit a negative index of refraction, allowing for the bending of light in unconventional ways.