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Title: Fluorescence enhancement in large-scale self-assembled gold nanoparticle double arrays

Abstract

Localized surface plasmon resonances excited in metallic nanoparticles confine and enhance electromagnetic fields at the nanoscale. This is particularly pronounced in dimers made from two closely spaced nanoparticles. When quantum emitters, such as dyes, are placed in the gap of those dimers, their absorption and emission characteristics can be modified. Both processes have to be considered when aiming to enhance the fluorescence from the quantum emitters. This is particularly challenging for dimers, since the electromagnetic properties and the enhanced fluorescence sensitively depend on the distance between the nanoparticles. Here, we use a layer-by-layer method to precisely control the distances in such systems. We consider a dye layer deposited on top of an array of gold nanoparticles or integrated into a central position of a double array of gold nanoparticles. We study the effect of the spatial arrangement and the average distance on the plasmon-enhanced fluorescence. We found a maximum of a 99-fold increase in the fluorescence intensity of the dye layer sandwiched between two gold nanoparticle arrays. The interaction of the dye layer with the plasmonic system also causes a spectral shift in the emission wavelengths and a shortening of the fluorescence life times. Our work paves the way formore » large-scale, high throughput, and low-cost self-assembled functionalized plasmonic systems that can be used as efficient light sources.« less

Authors:
; ; ;  [1];  [2]
  1. Institute of Condensed Matter Theory and Solid State Optics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, D-07743 Jena (Germany)
  2. Institute of Nanotechnology, Karlsruhe Institute of Technology, D-76021 Karlsruhe (Germany)
Publication Date:
OSTI Identifier:
22493048
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 118; Journal Issue: 23; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ABSORPTION; DEPOSITION; DIMERS; ELECTROMAGNETIC FIELDS; EMISSION; FLUORESCENCE; GOLD; LIGHT SOURCES; NANOPARTICLES; NANOSTRUCTURES; PLASMONS; RESONANCE; SPECTRAL SHIFT; WAVELENGTHS

Citation Formats

Chekini, M., Bierwagen, J., Cunningham, A., Bürgi, T., E-mail: Thomas.Buergi@unige.ch, Filter, R., Rockstuhl, C., and Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, D-76131 Karlsruhe. Fluorescence enhancement in large-scale self-assembled gold nanoparticle double arrays. United States: N. p., 2015. Web. doi:10.1063/1.4938025.
Chekini, M., Bierwagen, J., Cunningham, A., Bürgi, T., E-mail: Thomas.Buergi@unige.ch, Filter, R., Rockstuhl, C., & Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, D-76131 Karlsruhe. Fluorescence enhancement in large-scale self-assembled gold nanoparticle double arrays. United States. doi:10.1063/1.4938025.
Chekini, M., Bierwagen, J., Cunningham, A., Bürgi, T., E-mail: Thomas.Buergi@unige.ch, Filter, R., Rockstuhl, C., and Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, D-76131 Karlsruhe. Mon . "Fluorescence enhancement in large-scale self-assembled gold nanoparticle double arrays". United States. doi:10.1063/1.4938025.
@article{osti_22493048,
title = {Fluorescence enhancement in large-scale self-assembled gold nanoparticle double arrays},
author = {Chekini, M. and Bierwagen, J. and Cunningham, A. and Bürgi, T., E-mail: Thomas.Buergi@unige.ch and Filter, R. and Rockstuhl, C. and Institute of Theoretical Solid State Physics, Karlsruhe Institute of Technology, D-76131 Karlsruhe},
abstractNote = {Localized surface plasmon resonances excited in metallic nanoparticles confine and enhance electromagnetic fields at the nanoscale. This is particularly pronounced in dimers made from two closely spaced nanoparticles. When quantum emitters, such as dyes, are placed in the gap of those dimers, their absorption and emission characteristics can be modified. Both processes have to be considered when aiming to enhance the fluorescence from the quantum emitters. This is particularly challenging for dimers, since the electromagnetic properties and the enhanced fluorescence sensitively depend on the distance between the nanoparticles. Here, we use a layer-by-layer method to precisely control the distances in such systems. We consider a dye layer deposited on top of an array of gold nanoparticles or integrated into a central position of a double array of gold nanoparticles. We study the effect of the spatial arrangement and the average distance on the plasmon-enhanced fluorescence. We found a maximum of a 99-fold increase in the fluorescence intensity of the dye layer sandwiched between two gold nanoparticle arrays. The interaction of the dye layer with the plasmonic system also causes a spectral shift in the emission wavelengths and a shortening of the fluorescence life times. Our work paves the way for large-scale, high throughput, and low-cost self-assembled functionalized plasmonic systems that can be used as efficient light sources.},
doi = {10.1063/1.4938025},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 23,
volume = 118,
place = {United States},
year = {2015},
month = {12}
}