Plasmonic mode conversion in individual tilted 3D nanostructures
| Autor: | Godofredo Bautista, Xiaorun Zang, Dominik A. Gollmer, Christoph Dreser, Martti Kauranen, Monika Fleischer, Dieter P. Kern |
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| Rok vydání: | 2019 |
| Předmět: |
Fabrication
Nanostructure Materials science business.industry Physics::Optics 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Evaporation (deposition) Computer Science::Other 0104 chemical sciences Etching (microfabrication) Microscopy Optoelectronics General Materials Science 0210 nano-technology business Lithography Plasmon Excitation |
| Zdroj: | Nanoscale. 11:5429-5440 |
| ISSN: | 2040-3372 2040-3364 |
| Popis: | We investigate mode conversion in 3D asymmetric nanocones using angle-dependent linear optical spectroscopy and second-harmonic generation microscopy supported by corresponding simulations. The results prove the efficient excitation of the plasmonic out-of-plane mode that enhances the electric near-field at the sharp tip. Furthermore, we introduce two advanced fabrication processes including either etch mask transfer by tilted etching into a metallic layer or tilted electron-beam lithography followed by tilted evaporation and lift-off. These processes enable the fabrication of tilted nanostructures which can be optimized for a given purpose. The combination of the optical properties and the introduced fabrication processes enables a new design of plasmonic nanostructures for ultra-compact sensors or photon sources. |
| Databáze: | OpenAIRE |
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