Regensburg 2019 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 59: Composites and Functional Polymer Hybrids
CPP 59.5: Talk
Thursday, April 4, 2019, 16:15–16:30, H8
Surface Lattice Resonances in the Visible Optical Range by Soft Lithography Templates and Directed Self-Assembly — •Vaibhav Gupta1 and Töbias König1,2 — 1Leibniz-Institut für Polymerforschung Dresden e. V., hohe straße 6, D-01069 Dresden, Germany — 2Cluster of Excellence Centre for Advancing Electronics Dresden, Technische Universität Dresden, Mommsenstraße 4, D-01062 Dresden, Germany
We demonstrate a novel approach towards cost-efficient and low-loss plasmonic nanostructures, whose pronounced optical anisotropy can be detected by naked eye. Soft interference lithography and template-assisted colloidal self-assembly are used to fabricate a flexible macroscopic periodic square lattice of gold nanoparticles. Surface scanning methods reveal a full coverage of the array. The high structural quality results in a narrow bandwidth surface lattice resonance with a line width of 25. We show the hybrid nature of the optical response using angle dependent UV-vis spectroscopy and numerical simulations. We propose a platform to curb the rigid nature of optical systems and offers versatile plasmon mode engineering. This real time band edge tunable metasurface can find potential application in long range coherent energy transfer. However the rational design framework established here allows for generalization in account for other wavelength regime and particle type.