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Authors: A. Abass, S. Rodriguez, T. Ako, T. Aubert, M.A. Verschurren, D. Van Thourhout, J. Beeckman, Z. Hens, J. Gomez-Rivas, B. Maes
Title: Active Liquid Crystal Tuning of Metallic Nanoantenna Enhanced Light Emission from Colloidal Quantum Dots
Format: International Journal
Publication date: 9/2014
Journal/Conference/Book: Nano Letters
Volume(Issue): 14 p.5555-5560
Internal Reference: [N-1630]
Download: Download this Publication (2.5MB) (2.5MB)

Abstract

A system comprising an aluminum nanoantenna array on top of a luminescent colloidal quantum dot waveguide and covered by a thermotropic liquid crystal (LC) is
introduced. By heating the LC above its critical temperature, we demonstrate that the concomitant refractive index change modifies the hybrid plasmonic-photonic resonances in the system. This enables active control of the spectrum and directionality of the
narrowband (∼ 6 nm) enhancement of quantum dot photoluminescence by the metallic nanoantennas.

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