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Title: Polarization and distance dependent coupling in linear chains of gold nanoparticles

Journal Article · · Applied Physics Letters
DOI:https://doi.org/10.1063/1.4907322· OSTI ID:1237934
 [1];  [2]; ORCiD logo [3];  [1]
  1. Univ. of Colorado, Colorado Springs, CO (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Chernivtsi National Univ. (Ukraine)

We studied collective surface plasmon excitations in chains of gold nanoparticles. The resonance frequency of these excitations is a function of the distance between the particles and polarization of the incident light. The near-field coupling between the particles in a chain leads to a cosine squared angular dependence between the polarization of the incident light and the axis connecting the particles. The far-field coupling between the particles results in a sine squared angular dependence. When the incident light is polarized along the chain, the near-field coupling exhibits a red shift, while the far-field exhibits a blue shift of the collective plasmon mode with respect to the mode of the non-interacting particles. Here, we experimentally determined the particle separation for which the resonance frequency in the extinction spectra is polarization-independent.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; UKC2-7071-CH-12; SFPP-984617
OSTI ID:
1237934
Alternate ID(s):
OSTI ID: 1226703
Journal Information:
Applied Physics Letters, Vol. 106, Issue 5; ISSN 0003-6951
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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Cited By (5)

Power-Law/Exponential Transport of Electromagnetic Field in One-Dimensional Metallic Nanoparticle Arrays journal May 2018
Core–shell structures with noble-metal nanoparticles for surface-enhanced Raman spectroscopy journal September 2019
Ultrahigh refractive index sensitivity via lattice-induced meta-dipole modes in flat metallic nanoantenna arrays journal May 2018
Pharmaceutical aspects of silver nanoparticles journal December 2017
Imaging of Biological Cells Using Luminescent Silver Nanoparticles journal January 2016

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