Rostock 2019 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 15: Nano-Optics (Plasmonics)
Q 15.3: Vortrag
Montag, 11. März 2019, 14:45–15:00, S SR 112 Maschb.
Silver nanowires with optimized silica coating as versatile plasmonic resonators — •Martin Rothe1, Yuhang Zhao2, Günter Kewes1, Zdravko Kochovski2, Wilfried Sigle3, Peter A. van Aken3, Christoph Koch4, Matthias Ballauff2,5, Yan Lu2,6, and Oliver Benson1 — 1Humboldt Universität zu Berlin & IRIS Adlershof, Nanooptics, Berlin, Germany — 2Helmholtz Zentrum Berlin für Materialien und Energie, Institute of Soft Matter and Functional Materials, Berlin, Germany — 3Stuttgart Center for Electron Microscopy, Max Planck Institute for Solid State Research, Stuttgart, Germany — 4Humboldt Universität zu Berlin & IRIS Adlershof, Structure Research and Electron Microscopy, Berlin, Germany — 5Humboldt Universität zu Berlin, Department of Physics, Berlin, Germany — 6Institute of Chemistry, University of Potsdam, Potsdam, Germany
Metal nanowires are advantageous plasmonic nanostructures as they offer large interaction volumes, tunable resonances and good coupling opportunities. An additional dielectric coating can be used for distance control but it must in no case degrade the plasmonic properties. We have synthesized silver nanowires of 70nm in diameter with a nm-sized silica shell of homogeneous and smooth surface quality using a modified Stöber method [1]. Transmission electron microscopy, dark-field scattering spectroscopy, electron-energy loss spectroscopy and thorough numerical simulations have been used to study individual nanowires and thus introduce them as usable building blocks for integrated hybrid plasmonic systems. [1] arXiv:1811.07671 [physics.optics] (2018)