What are the Key Properties of Optical Metamaterials?
One of the most intriguing properties of optical metamaterials is negative refraction, where light is refracted on the opposite side of the normal compared to conventional materials. This property enables applications such as superlenses, which can achieve sub-wavelength imaging beyond the diffraction limit of light. Additionally, metamaterials can be designed for anisotropic behavior, where their optical properties vary depending on the direction of light propagation.