Alignment of rod-shaped single-photon emitters driven by line defects in liquid crystals

Autor: Stefano Vezzoli, Laurent Pelliser, Laurent Coolen, Luigi Carbone, Ferruccio Pisanello, Agnès Maître, Emmanuelle Lacaze, Mathieu Manceau, Alberto Bramati, Delphine Coursault, Godefroy Leménager, Clotilde Lethiec, Massimo DeVittorio
Přispěvatelé: School of Physical and Mathematical Sciences, Institut des Nanosciences de Paris (INSP), Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Kastler Brossel (LKB (Jussieu)), Université Pierre et Marie Curie - Paris 6 (UPMC)-Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), NATIONAL NANOTECHNOLOGY LABORATORY (NNL), ITALIAN INSTITUTE OF TECHNOLOGY (IIT)-SCUOLA SUPERIORE ISUFI-CNR-NANO, Dipartimento di Ingegneria dell'Innovazione, Università degli studi di Lecce, Instituto Italiano di Tecnologia, Pelliser, Laurent, Manceau, Mathieu, Lethiec, Clotilde, Coursault, Delphine, Vezzoli, Stefano, Leménager, Godefroy, Coolen, Laurent, DE VITTORIO, Massimo, Pisanello, Ferruccio, Carbone, Luigi, Maitre, Agne, Bramati, Alberto, Lacaze, Emmanuelle, Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Advanced Functional Materials
Advanced Functional Materials, Wiley, 2015, 25 (11), pp.1719-1726 ⟨10.1002/adfm.201403331⟩
Advanced functional materials
(2015). doi:10.1002/adfm.201403331
info:cnr-pdr/source/autori:Pelliser, Laurent[1,2]; Manceau, Mathieu[3]; Lethiec, Clotilde[1,2]; Coursault, Delphine[1,2]; Vezzoli, Stefano[3,4]; Leménager, Godefroy[3]; Coolen, Laurent[1,2]; Devittorio, Massimo[5,6,7]; Pisanello, Ferruccio[6]; Carbone, Luigi[7]; Mâitre, Agnès[1,2]; Bramati, Alberto[3]; Lacaze, Emmanuelle[1,2]/titolo:Alignment of Rod-Shaped Single-Photon Emitters Driven by Line Defects in Liquid Crystals/doi:10.1002%2Fadfm.201403331/rivista:Advanced functional materials (Print)/anno:2015/pagina_da:/pagina_a:/intervallo_pagine:/volume
Advanced Functional Materials, 2015, 25 (11), pp.1719-1726 ⟨10.1002/adfm.201403331⟩
ISSN: 1616-301X
1616-3028
DOI: 10.1002/adfm.201403331⟩
Popis: International audience; We use arrays of liquid crystal defects, linear smectic dislocations, to trap semi-conductor CdSe/CdS dot-in-rods which behave as single photon emitters. We combine measurements of the emission diagram together with measurements of the emitted polarization of the single emitters. We show that the dot-in-rods are confined parallel to the linear defects to allow for a minimization of the disorder energy associated with the dislocation cores. We demonstrate that the electric dipoles associated with the dot-in-rods, tilted with respect to the rods, remain oriented in the plane including the smectic linear defects and being perpendicular to the substrate, most likely due to the dipole/dipole interactions between the dipoles of the liquid crystal molecules and the dot-in-rods ones. Using smectic dislocations, we can consequently orient nanorods along a unique direction for a given substrate, independently of the ligands’ nature, without any induced aggregation, leading as well to a fixed azimuthal orientation for the associated dot-in-rods’ dipoles. These results open the way for a fine control of nanoparticle anisotropic optical properties, in particular a fine control of single photon emission polarization.
Databáze: OpenAIRE
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