Experimental Demonstration of Near-Infrared Negative-Index Metamaterials
Experimental Demonstration of Near-Infrared Negative-Index Metamaterials
Metal-based negative refractive-index materials have been extensively studied in the microwave region. However, negative-index metamaterials have not been realized at near-IR or visible frequencies due to difficulties of fabrication and to the generally poor optical properties of metals at these wavelengths. In this Letter, we report the first fabrication and …