Dresden 2011 – scientific programme
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O: Fachverband Oberflächenphysik
O 60: Poster Session IV (Solid/liquid interfaces; Semiconductors; Oxides and insulators; Graphene; Plasmonics and nanooptics; Electronic Structure; Surface chemical reactions; Heterogeneous catalysis)
O 60.90: Poster
Wednesday, March 16, 2011, 17:30–21:00, P4
Towards the realization of an efficient nanoantenna — •Reto Giannini1, Patrick Leidenberger2, Christian Hafner2, and Jörg F. Löffler1 — 1Laboratory of Metal Physics and Technology, Department of Materials, ETH Zurich, 8093 Zurich, Switzerland — 2Laboratory for Electromagnetic Fields and Microwave Electronics, ETH Zurich, 8092 Zurich, Switzerland
Different aspects of nanoantennas, such as radiation pattern or wavelength-dependent near-field enhancement, are being heavily discussed in recent years. Many simulation-based contributions concentrate either on the general usability of simulation methods or use such methods to verify experimental data. Especially in systems that are more complex to realize, estimations concerning performance and its reproducibility are needed before the development of the production process starts. In this study, we present a series of FEM-based simulations carried out using JCMsuite on a nanoantenna consisting of two stacked nanodiscs. The goal was to realize a geometry that delivers first and second order plasmon resonance at the later excitation and emission wavelength of the activated nanoantenna as well as estimations concerning design stability. Besides the most important geometry parameters, such as height, diameter or gap, production-based parameters (diminution of the antenna or round corners) as well as the influence of a later integration (excitation and emission) are considered. The results of the simulations are compared with actual experiments on nanoantennas, produced using guidelines obtained from the simulation studies.