Huygens’ metasurfaces from microwaves to optics: a review
| Autor: | Alex M. H. Wong, Michael Chen, Minseok Kim, George V. Eleftheriades |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
cloaking
wavefront manipulation QC1-999 Cloaking Physics::Optics perfect anomalous reflection 02 engineering and technology Huygens–Fresnel principle symbols.namesake Optics 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering Physics huygens’ principle business.industry perfect refraction 020206 networking & telecommunications antenna beam forming 021001 nanoscience & nanotechnology metasurfaces Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials symbols 0210 nano-technology business Microwave Biotechnology |
| Zdroj: | Nanophotonics, Vol 7, Iss 6, Pp 1207-1231 (2018) |
| ISSN: | 2192-8614 2192-8606 |
| Popis: | In this article, the basic principles and the main applications of Huygens’ metasurfaces (HMSs) are reviewed from microwaves to optics. In general, HMSs comprise a thin layer of orthogonal electric and magnetic dipoles, which form an array of Huygens’ sources. In a refraction setting, these sources radiate mostly in the forward direction and can be used to manipulate an incident electromagnetic wave at will. In the case of passive HMSs, the Huygens’ sources are induced by an incident electromagnetic field. Examples of passive manipulations include reflectionless refraction, perfect anomalous reflection, and arbitrary antenna beam forming. In the case of active HMSs, the Huygens’ sources are impressed active sources. Active HMS manipulations include cloaking and subwavelength spot formation in a cavity environment. |
| Databáze: | OpenAIRE |
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