Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 29: Nanostructures, Nanostructuring and Nanosized Soft Matter I
CPP 29.4: Vortrag
Dienstag, 13. März 2018, 12:00–12:15, C 230
Coherent energy transfer in a plasmonic colloidal nanocavity — •Max J. Schnepf1,2, Yannic Brasse1,2, Fabian R. Goßler1,2, Andreas Fery1,2,3, and Tobias A.F. König1,2 — 1Leibniz Institute of Polymer Research (IPF), Institute of Physical Chemistry and Polymer Physics, Hohe Str. 6, 01069 Dresden, Germany — 2Cluster of Excellence Center for Advancing Electronics Dresden (cfaed), Technische Universität Dresden, Germany — 3Physical Chemistry of Polymeric Materials, Technische Universität Dresden, Germany
We present a film-coupled colloidal building-block, comprising of a plasmonic core surrounded by a dielectric shell containing a fluorophore emitter. Due to the small mode volume and the strong loss rate, the system is considered to be in a strong coupling regime. As a result, fluorescent lifetime of the emitter is significantly reduced and the emission rate is enhanced while the energy of the emitted photons remains unaffected.
We systematically study the energy transfer mechanism on the single particle level by employing electron microscopy, scattering spectroscopy, fluorescence life-time imaging (FLIM) and time-correlated single photon counting on the same cavity. Supported by finite-difference time-domain simulations, we examine the efficiency and nature of the energy transfer effects. Finally, we discuss the future direction in coupling of these building blocks into a plasmonic lattice.