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Dispersion and orientation of single-walled carbon nanotubes in a chromonic liquid crystal
Authors:Nawel Ould-Moussa  Christophe Blanc  Camilo Zamora-Ledezma  Oleg D. Lavrentovich  Ivan I. Smalyukh  Mohammad F. Islam
Affiliation:1. Laboratoire Charles Coulomb, UMR CNRS 5221, Université Montpellier II Pl. E. Bataillon, 34095, Montpellier, Cedex 5, France;2. Laboratorio de Física de la Materia Condensada, Instituto Venezolano de Investigaciones Científicas, Altos de Pipe, 1204, Caracas, Venezuela;3. Liquid Crystal Institute and Chemical Physics Interdisciplinary Program, Kent State University, Kent, OH 44242, USA;4. Department of Physics, Liquid Crystals Materials Research Center, University of Colorado, Boulder, CO 80309, USA;5. Department of Electrical, Computer and Energy Engineering, University of Colorado, Boulder, CO 80309, USA;6. Renewable and Sustainable Energy Institute, National Renewable Energy Laboratory, University of Colorado, Boulder, CO, 80309, USA;7. Department of Materials Science and Engineering, 5000 Forbes Avenue, Carnegie Mellon University, Pittsburgh, PA 15213-3890, USA
Abstract:A post-synthesis alignment of individual single-walled carbon nanotubes (SWCNTs) is desirable for translating their unique anisotropic properties to a macroscopic scale. Here, we demonstrate excellent dispersion, orientation and concomitant-polarised photoluminescence of SWCNTs in a nematic chromonic liquid crystal. The methods to obtain stable suspension are described, and order parameters of the liquid crystal matrix and of the nanotubes are measured independently.
Keywords:single-walled carbon nanotubes  nematic liquid crystal  alignment
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