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Photonics 2015, 2(3), 855-864; doi:10.3390/photonics2030855

Quantum Dot/Liquid Crystal Nanocomposites in Photonic Devices

1
Department of Physics, University of California, 5200 Lake Rd, Merced, CA 95343, USA
2
Department of Chemistry, University of British Columbia, 2036 Main Mall, Vancouver, BC V6T1Z1, Canada
*
Authors to whom correspondence should be addressed.
Received: 10 July 2015 / Revised: 21 July 2015 / Accepted: 22 July 2015 / Published: 27 July 2015
(This article belongs to the Special Issue Quantum Dot Based Lasers and Photonic Devices)
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Abstract

Quantum dot/liquid crystal nano-composites are promising new materials for a variety of applications in energy harvesting, displays and photonics including the liquid crystal laser. To realize many applications, however, we need to control and stabilize nano-particle dispersion in different liquid crystal host phases and understand how the particles behave in an anisotropic fluid. An ideal system will allow for the controlled assembly of either well-defined nano-particle clusters or a uniform particle distribution. In this paper, we investigate mesogen-functionalized quantum dots for dispersion in cholesteric liquid crystal. These nanoparticles are known to assemble into dense stable packings in the nematic phase, and such structures, when localized in the liquid crystal defects, can potentially enhance the coupling between particles and a cholesteric cavity. Controlling the dispersion and assembly of quantum dots using mesogenic surface ligands, we demonstrate how resonant fluid photonic cavities can result from the co-assembly of luminescent nanoparticles in the presence of cholesteric liquid crystalline ordering. View Full-Text
Keywords: quantum dot; liquid crystal; cholesteric quantum dot; liquid crystal; cholesteric
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Rodarte, A.L.; Cisneros, F.; Hein, J.E.; Ghosh, S.; Hirst, L.S. Quantum Dot/Liquid Crystal Nanocomposites in Photonic Devices. Photonics 2015, 2, 855-864.

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