Single-Element Nanoantennas for Ultradirective Emission
In this report we discuss the possibility of obtaining directional emission through the near-field interference of simultaneously driven electric and magnetic dipole moments in a nanoantenna. Further we discuss which phase relationships are necessary to obtain a high directivity and which geometries...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2014 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2099.1/24220 |
| Acceso en línea: | https://hdl.handle.net/2099.1/24220 |
| Access Level: | acceso abierto |
| Palabra clave: | multipole interference nanoantennas directivity mie theory |
| Sumario: | In this report we discuss the possibility of obtaining directional emission through the near-field interference of simultaneously driven electric and magnetic dipole moments in a nanoantenna. Further we discuss which phase relationships are necessary to obtain a high directivity and which geometries are able to meet these requirements. We investigated these geometries with a commercial FDTD - suite and used the recorded electromagnetic fields to model their scattering properties with Mie theory. This enabled us to calculate the spectral dependence of the scattering cross - section of every multipole component up to the octupole for any scatterer. |
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