Active liquid crystal tuning of metallic nanoantenna enhanced light emission from colloidal quantum dots.
basic_science · Level V
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- Record sourced from PubMed, PMID 25237822.
- Also identified by DOI 10.1021/nl501955e.
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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 narrow-band (∼6 nm) enhancement of quantum dot photoluminescence by the metallic nanoantennas.