Disordered zero-index metamaterials based on metal-induced crystallization
| Autor: | Henning Galinski, Alla S. Sologubenko, Andreas Wyss, Volker Schnabel, Mattia Seregni, Huan Ma, Ralph Spolenak |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Materials science
FOS: Physical sciences Physics::Optics 02 engineering and technology Applied Physics (physics.app-ph) 01 natural sciences law.invention law 0103 physical sciences General Materials Science Crystallization 010306 general physics Plasmon Condensed Matter - Materials Science Dopant business.industry Doping Metamaterial Materials Science (cond-mat.mtrl-sci) Physics - Applied Physics 021001 nanoscience & nanotechnology Condensed Matter Physics Semiconductor Modeling and Simulation Optoelectronics Photonics 0210 nano-technology business Metal-induced crystallization Optics (physics.optics) Physics - Optics |
| Zdroj: | NPG Asia Materials, 11 (1) |
| Popis: | Zero-index (ZI) materials are synthetic optical materials with vanishing effective permittivity and/or permeability at a given design frequency. Recently, it has been shown that the permeability of a zero-index host material can be deterministically tuned by adding photonic dopants. Here, we apply metal-induced crystallization (MIC) in quasi-random metal-semiconductor composites to fabricate large-area zero-index materials. Using Ag-Si as a model systems, we demonstrate that the localized crystallization of the semiconductor at the metal/semiconductor interface can be used as design parameter to control light interaction in such a disordered system. The induced crystallization generates new zero-index states corresponding to a hybridized plasmonic mode emerging from selective coupling of light to the \r{a}ngstr\"om-sized crystalline shell of the semiconductor. Photonic doping can be used to enhance the transmission in these disordered metamaterials as is shown by simulation. Our results break ground for novel large-area zero-index materials for wafer scale applications and beyond. Comment: 23 pages, 4 figures |
| Databáze: | OpenAIRE |
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