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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 22: Electrical, Dielectrical and Optical Properties of Thin Films
CPP 22.5: Vortrag
Montag, 16. März 2020, 16:00–16:15, ZEU 114
Optical band structures of self-assembled colloidal metasurfaces — •Olha Aftenieva1 and Tobias A.F. König1,2 — 1Leibniz-Institut für Polymerforschung Dresden e. V., Institute of Physical Chemistry and Polymer Physics, Dresden, Germany — 2Technical University of Dresden, Physical Chemistry, 01062 Dresden, Germany
In order to obtain mixed plasmon states from the periodic arrangement we follow the concept of colloidal metasurface [König, Fery et al. Adv. Optical Mater. 2018, 1800564]. We avail of the rational design of such structures through numerical simulation, colloidal self-assembly manufacturing, and spectroscopic evaluation to obtain the optical band structures. This contribution will focus on the quantitative characterization of the interaction between Bragg diffraction and plasmonic modes by angle-resolved spectroscopy. The energy-momentum measurements are supported by the finite-difference time-domain (FDTD) simulations. Such a unique assembly of colloidal nanoparticles at a flat interface allows accessing subwavelength polaritonic states that go beyond conventional optics.