Epitaxial superlattices with titanium nitride as a plasmonic component for optical hyperbolic metamaterials

• DOI: 10.1073/pnas.1319446111
• Publication Date: 2014-05-13T08:53:58Z
• Authors: Gururaj V. Naik; Bivas Saha; Jing Liu; Sammy M. Saber; Eric A. Stach; Joseph M. K. Irud...; Timothy D. Sands; Vladimir M. Shalaev; Alexandra Boltasseva
• Keywords: Manufactured Materials; Silver; Optical Phenomena; 02 engineering and technology; ceramics; 530; 7. Clean energy; Engineering; Microscopy, Electron, Transmission; X-Ray Diffraction; NANOPARTICLES; DEPOSITION; Titanium; TIN FILMS; refractory plasmonics; 620; Nanoscience and Nanotechnology; Nanostructures; HYPERLENS; LIGHT; Microscopy, Fluorescence; DIELECTRIC FUNCTION; metal nitrides; GROWTH; Gold; EMISSION; 0210 nano-technology; QUANTUM

Significance Plasmonic and metamaterial devices require high-performance material building blocks, both plasmonic dielectric, to be useful in any real-world application. Here, we develop dielectric materials that can grown epitaxially into ultrathin ultrasmooth layers with sharp interfaces. We show a superlattice consisting of titanium nitride as component behaves an optical hyperbolic exhibits extremely high photonic density states.