Please use this identifier to cite or link to this item:
|Title:||Alignment of rod-shaped single-photon emitters driven by line defects in liquid crystals||Authors:||Pelliser, Laurent
|Keywords:||DRNTU::Engineering::Materials::Functional materials||Issue Date:||2015||Source:||Pelliser, L., Manceau, M., Lethiec, C., Coursault, D., Vezzoli, S., Leménager, et al. (2015). Alignment of rod-shaped single-photon emitters driven by line defects in liquid crystals. Advanced functional materials, 25(11), 1719-1726.||Series/Report no.:||Advanced functional materials||Abstract:||Arrays of liquid crystal defects—linear smectic dislocations—are used to trap semiconductor CdSe/CdS dot-in-rods which behave as single-photon emitters. Measurements of the emission diagram are combined together with measurements of the emitted polarization of the single emitters. It is shown 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. It is demonstrated 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 perpendicular to the substrate, most likely due to dipole/dipole interactions between the dipoles of the liquid crystal molecules and those of the dot-in-rods. Using smectic dislocations, nanorods can consequently be oriented 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 dot-in-rods' dipoles. These results open the way for the fine control of nanoparticle anisotropic optical properties, in particular, fine control of single-photon emission polarization.||URI:||https://hdl.handle.net/10356/106777
|ISSN:||1616-301X||DOI:||http://dx.doi.org/10.1002/adfm.201403331||Rights:||© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||SPMS Journal Articles|
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.