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Title: Plasmon–Exciton Interactions Probed Using Spatial Coentrapment of Nanoparticles by Topological Singularities

Abstract

We study plasmon-exciton interaction by using topological singularities to spatially confine, selectively deliver, cotrap and optically probe colloidal semiconductor and plasmonic nanoparticles. The interaction is monitored in a single quantum system in the bulk of a liquid crystal medium where nanoparticles are manipulated and nanoconfined far from dielectric interfaces using laser tweezers and topological configurations containing singularities. When quantum dot-in-a-rod particles are spatially colocated with a plasmonic gold nanoburst particle in a topological singularity core, its fluorescence increases because blinking is significantly suppressed and the radiative decay rate increases by nearly an order of magnitude owing to the Purcell effect. We argue that the blinking suppression is the result of the radiative rate change that mitigates Auger recombination and quantum dot ionization, consequently reducing nonradiative recombination. Our work demonstrates that topological singularities are an effective platform for studying and controlling plasmon-exciton interactions.

Authors:
; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1351579
Report Number(s):
NREL/JA-5900-64926
Journal ID: ISSN 1936-0851
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
ACS Nano
Additional Journal Information:
Journal Volume: 9; Journal Issue: 12; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; plasmonics; semiconductor nanocrystals; metal nanoparticles; topological singularities; blinking

Citation Formats

Ackerman, Paul J., Mundoor, Haridas, Smalyukh, Ivan I., and van de Lagemaat, Jao. Plasmon–Exciton Interactions Probed Using Spatial Coentrapment of Nanoparticles by Topological Singularities. United States: N. p., 2015. Web. doi:10.1021/acsnano.5b05715.
Ackerman, Paul J., Mundoor, Haridas, Smalyukh, Ivan I., & van de Lagemaat, Jao. Plasmon–Exciton Interactions Probed Using Spatial Coentrapment of Nanoparticles by Topological Singularities. United States. https://doi.org/10.1021/acsnano.5b05715
Ackerman, Paul J., Mundoor, Haridas, Smalyukh, Ivan I., and van de Lagemaat, Jao. Tue . "Plasmon–Exciton Interactions Probed Using Spatial Coentrapment of Nanoparticles by Topological Singularities". United States. https://doi.org/10.1021/acsnano.5b05715.
@article{osti_1351579,
title = {Plasmon–Exciton Interactions Probed Using Spatial Coentrapment of Nanoparticles by Topological Singularities},
author = {Ackerman, Paul J. and Mundoor, Haridas and Smalyukh, Ivan I. and van de Lagemaat, Jao},
abstractNote = {We study plasmon-exciton interaction by using topological singularities to spatially confine, selectively deliver, cotrap and optically probe colloidal semiconductor and plasmonic nanoparticles. The interaction is monitored in a single quantum system in the bulk of a liquid crystal medium where nanoparticles are manipulated and nanoconfined far from dielectric interfaces using laser tweezers and topological configurations containing singularities. When quantum dot-in-a-rod particles are spatially colocated with a plasmonic gold nanoburst particle in a topological singularity core, its fluorescence increases because blinking is significantly suppressed and the radiative decay rate increases by nearly an order of magnitude owing to the Purcell effect. We argue that the blinking suppression is the result of the radiative rate change that mitigates Auger recombination and quantum dot ionization, consequently reducing nonradiative recombination. Our work demonstrates that topological singularities are an effective platform for studying and controlling plasmon-exciton interactions.},
doi = {10.1021/acsnano.5b05715},
url = {https://www.osti.gov/biblio/1351579}, journal = {ACS Nano},
issn = {1936-0851},
number = 12,
volume = 9,
place = {United States},
year = {2015},
month = {12}
}

Works referencing / citing this record:

Squirming motion of baby skyrmions in nematic fluids
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High-order elastic multipoles as colloidal atoms
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Dynamic self-assembly of nanoparticles using thermotropic liquid crystals
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Dynamics of topological solitons, knotted streamlines, and transport of cargo in liquid crystals
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Preparation and properties of plasmonic-excitonic nanoparticle assemblies
journal, January 2019