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Issue 12, 2019
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Plasmonic mode conversion in individual tilted 3D nanostructures

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Abstract

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.

Graphical abstract: Plasmonic mode conversion in individual tilted 3D nanostructures

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Publication details

The article was received on 19 Dec 2018, accepted on 22 Feb 2019 and first published on 11 Mar 2019


Article type: Paper
DOI: 10.1039/C8NR10254F
Nanoscale, 2019,11, 5429-5440

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    Plasmonic mode conversion in individual tilted 3D nanostructures

    C. Dreser, D. A. Gollmer, G. Bautista, X. Zang, D. P. Kern, M. Kauranen and M. Fleischer, Nanoscale, 2019, 11, 5429
    DOI: 10.1039/C8NR10254F

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