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Tuning and Switching a Plasmonic Quantum Dot “Sandwich” in a Nematic Line Defect

Journal Article · · ACS Nano
We study the quantum-mechanical effects arising in a single semiconductor core/shell quantum dot (QD) controllably sandwiched between two plasmonic nanorods. Control over the position and the 'sandwich' confinement structure is achieved by the use of a linear-trap liquid crystal (LC) line defect and laser tweezers that 'push' the sandwich together. This arrangement allows for the study of exciton-plasmon interactions in a single structure, unaltered by ensemble effects or the complexity of dielectric interfaces. We demonstrate the effect of plasmonic confinement on the photon antibunching behavior of the QD and its luminescence lifetime. The QD behaves as a single emitter when nanorods are far away from the QD but shows possible multiexciton emission and a significantly decreased lifetime when tightly confined in a plasmonic 'sandwich'. These findings demonstrate that LC defects, combined with laser tweezers, enable a versatile platform to study plasmonic coupling phenomena in a nanoscale laboratory, where all elements can be arranged almost at will.
Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States); Univ. of Colorado, Boulder, CO (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC36-08GO28308
OSTI ID:
1427346
Report Number(s):
NREL/JA--5900-68952
Journal Information:
ACS Nano, Journal Name: ACS Nano Journal Issue: 3 Vol. 12; ISSN 1936-0851
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (67)

Plasmon Coupling in Nanorod Assemblies:  Optical Absorption, Discrete Dipole Approximation Simulation, and Exciton-Coupling Model journal September 2006
Single-Photon Emission Behavior of Isolated CdSe/ZnS Quantum Dots Interacting with the Localized Surface Plasmon Resonance of Silver Nanoparticles journal November 2011
Non-blinking quantum dot with a plasmonic nanoshell resonator journal January 2015
Near-field manipulation of spectroscopic selection rules on the nanoscale journal May 2012
Landau–de Gennes modelling of nematic liquid crystal colloids journal August 2009
Discrete-dipole approximation for periodic targets: theory and tests journal January 2008
Fast near field calculations in the discrete dipole approximation for regular rectilinear grids journal January 2012
Design of plasmonic nanoantennae for enhancing spontaneous emission journal January 2007
Diversity of knot solitons in liquid crystals manifested by linking of preimages in torons and hopfions text January 2017
Electric-Field-Directed Growth of Gold Nanorods in Aqueous Surfactant Solutions journal June 2004
CdSe Nanoplatelets: Living Polymers journal August 2016
Plasmonic Absorption Enhancement of a Single Quantum Dot journal February 2015
Controlled non-classical photon emission from single conjugated polymer molecules journal March 2003
Principles of Condensed Matter Physics book January 1995
Plasmonic Effect on Exciton and Multiexciton Emission of Single Quantum Dots journal July 2016
Charge Dynamics and Optolectronic Properties in HgTe Colloidal Quantum Wells journal June 2017
Plasmon–Exciton Interactions Probed Using Spatial Coentrapment of Nanoparticles by Topological Singularities journal October 2015
Electric Switching of Fluorescence Decay in Gold–Silica–Dye Nematic Nanocolloids Mediated by Surface Plasmons journal July 2016
Accuracy and Mechanistic Details of Optical Printing of Single Au and Ag Nanoparticles journal September 2017
Direct Observation of Multiphoton Emission Enhancement from a Single Quantum Dot Using AFM Manipulation of a Cubic Gold Nanoparticle journal December 2015
Recent Progress in Rare Earth Micro/Nanocrystals: Soft Chemical Synthesis, Luminescent Properties, and Biomedical Applications journal December 2013
Uniaxial Plasmon Coupling through Longitudinal Self-Assembly of Gold Nanorods journal September 2004
Radiative and Nonradiative Lifetime Engineering of Quantum Dots in Multiple Solvents by Surface Atom Stoichiometry and Ligands journal January 2013
The Ultrafast Photophysics of Pentacene Coupled to Surface Plasmon Active Nanohole Films journal March 2009
Expanding the Optical Trapping Range of Gold Nanoparticles journal October 2005
Heat Profiling of Three-Dimensionally Optically Trapped Gold Nanoparticles using Vesicle Cargo Release journal February 2011
Plasmon Enhanced Solar-to-Fuel Energy Conversion journal August 2011
Shape-Dependent Oriented Trapping and Scaffolding of Plasmonic Nanoparticles by Topological Defects for Self-Assembly of Colloidal Dimers in Liquid Crystals journal January 2012
Enhancement of Multiphoton Emission from Single CdSe Quantum Dots Coupled to Gold Films journal March 2013
Plasmon-Enhanced Energy Transfer for Improved Upconversion of Infrared Radiation in Doped-Lanthanide Nanocrystals journal December 2013
Surface Plasmon Mediated Strong Exciton−Photon Coupling in Semiconductor Nanocrystals journal January 2010
Improved Size-Tunable Synthesis of Monodisperse Gold Nanorods through the Use of Aromatic Additives journal February 2012
Plasmonics for improved photovoltaic devices journal February 2010
Singular phase nano-optics in plasmonic metamaterials for label-free single-molecule detection journal January 2013
Topological defects in liquid crystals as templates for molecular self-assembly journal September 2015
Optical detection of single non-absorbing molecules using the surface plasmon resonance of a gold nanorod journal April 2012
Optical trapping and manipulation of nanostructures journal November 2013
Strongly modified plasmon–matter interaction with mesoscopic quantum emitters journal December 2010
Strong plasmonic enhancement of biexciton emission: controlled coupling of a single quantum dot to a gold nanocone antenna journal February 2017
Light trapping in mesoporous solar cells with plasmonic nanostructures journal January 2016
An experimental and theoretical mechanistic study of biexciton quantum yield enhancement in single quantum dots near gold nanoparticles journal January 2015
Optical characterization of liquid crystals by combined ellipsometry and half-leaky-guided-mode spectroscopy in the visible-near infrared range journal April 2007
Plasmon-enhanced solar energy conversion in organic bulk heterojunction photovoltaics journal January 2008
Optical properties of cubic and hexagonal CdSe journal October 1995
Optically and elastically assembled plasmonic nanoantennae for spatially resolved characterization of chemical composition in soft matter systems using surface enhanced spontaneous and stimulated Raman scattering journal August 2014
The Physics of Liquid Crystals book December 1993
Intensity fluctuation spectroscopy of small numbers of dye molecules in a microcavity journal July 1998
Optical Constants of the Noble Metals journal December 1972
Trion, biexciton, and exciton dynamics in single self-assembled CdSe quantum dots journal September 2003
Self-assembly of colloidal particles in deformation landscapes of electrically driven layer undulations in cholesteric liquid crystals journal October 2016
Near-Unity Quantum Yields of Biexciton Emission from CdSe / CdS Nanocrystals Measured Using Single-Particle Spectroscopy journal May 2011
Super-Poissonian Statistics of Photon Emission from Single CdSe-CdS Core-Shell Nanocrystals Coupled to Metal Nanostructures journal March 2013
Active Shape-Morphing Elastomeric Colloids in Short-Pitch Cholesteric Liquid Crystals journal April 2013
Triggered Single Photons from a Quantum Dot journal February 2001
Diversity of Knot Solitons in Liquid Crystals Manifested by Linking of Preimages in Torons and Hopfions journal January 2017
Unidirectional Emission of a Quantum Dot Coupled to a Nanoantenna journal August 2010
Novel Colloidal Interactions in Anisotropic Fluids journal March 1997
Efficient hot-electron transfer by a plasmon-induced interfacial charge-transfer transition journal August 2015
Triclinic nematic colloidal crystals from competing elastic and electrostatic interactions journal March 2016
Optical Constants of Cubic ZnS journal November 1993
Discrete-Dipole Approximation For Scattering Calculations journal January 1994
Discrete-dipole approximation for periodic targets: theory and tests journal January 2008
Optimized optical trapping of gold nanoparticles journal January 2010
Fast near field calculations in the discrete dipole approximation for regular rectilinear grids journal January 2012
Observation of a single-beam gradient force optical trap for dielectric particles journal January 1986
Design of plasmonic nanoantennae for enhancing spontaneous emission journal January 2007
Self-assembly of predesigned optical materials in nematic codispersions of plasmonic nanorods journal January 2016

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