Large Quality Factor in Sheet Metamaterials Made from Dark Dielectric Meta-atoms
Large Quality Factor in Sheet Metamaterials Made from Dark Dielectric Meta-atoms
Metamaterials---or artificial electromagnetic materials---can create media with properties unattainable in nature, but mitigating dissipation is a key challenge for their further development. Here, we demonstrate a low-loss metamaterial by exploiting dark bound states in dielectric inclusions coupled to the external waves by small nonresonant metallic antennas. We experimentally demonstrate a …