Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 54: Nano-Optics (Single Quantum Emitters and Plasmonics)
Q 54.6: Talk
Thursday, March 8, 2018, 11:45–12:00, K 0.023
Coupling of quantum emitters to plasmonic nanostructures in functional devices built from DNA — •Steffen Both1, Maximilian J. Urban2,3, Klas Lindfors4, Na Liu2,3, and Thomas Weiss1 — 14th Physics Institute and Research Center SCoPE, University of Stuttgart — 2Kirchhoff Institute for Physics, University of Heidelberg — 3Max Planck Institute for Intelligent Systems, Stuttgart — 4Department of Chemistry, University of Cologne
In recent years, DNA nanotechnology has emerged to a powerful platform that allows the realization of functional artificial devices on the nanoscale. Recently, we demonstrated a DNA based nanomachine that uses two gold nanocrystals as a gear and can perform a reversible sliding movement. The sliding displacement can be in situ monitored by tracking the fluorescence of two attached fluorophores, which exchange energy via Förster resonance energy transfer (FRET). Electromagnetic interaction with the plasmonic resonances of the gold nanocrystals strongly affects the fluorophores, resulting in a complex response of the system. We present a theoretical investigation of this interaction and discuss the underlying energy transfer mechanisms.