Plasmon Polaritons in Finite-Length Metal−Nanoparticle Chains:  The Role of Chain Length Unravelled

Citrin, D. S.

doi:10.1021/nl050513+

Cited by 112 publications

(114 citation statements)

References 24 publications

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“…14 Theoretical analysis revealed that for both double and single column chains, the superradiant mode not only reaches an infinite chain limit for N L = 5 -10, consistent with earlier studies, 27,50,52 but also redshifts due to plasmonic interactions as well as phase retardation as L Tot increases. 50,51 As the latter effect also depends on the width of the significantly beyond what has been reported before for single particle studies.…”

Section: -52supporting

confidence: 86%

“…50,51 As the latter effect also depends on the width of the significantly beyond what has been reported before for single particle studies. 25,27,40,52 Our direct observation of the infinite chain limit eliminates the need to establish it through simulations. Next, we set L Tot and the width constant (Fig.…”

Section: -52mentioning

confidence: 97%

“…To summarize a body of literature, as long as 2.0 < D/r ≤ 2.5, where D is the center-to-center distance between the NPs and r is the NP radius, the energy of the lowest energy peak plateaus for a number of repeat units, N L , between 5 and 10, even though a range of r (5 -55 nm) and interparticle gaps (0.5 -30 nm) has been investigated. 21,23,25,47,48,[50][51][52] The interaction strength between surface plasmons is significantly reduced though when D/r increases from 2.01 to 2.1, as investigated in detail both experimentally and through simulations for the smallest chain lengths of dimers and trimers. 32,[53][54][55] Due to this decrease in coupling, saturation of the redshifting for the lowest energy longitudinal chain mode is predicted to occur at chain lengths as short as 7 NPs and at shorter wavelengths as the interparticle gap increases.…”

Section: Introductionmentioning

confidence: 99%

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Plasmonic polymers unraveled through single particle spectroscopy

et al. 2014

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Plasmonic polymers are quasi one-dimensional assemblies of nanoparticles whose optical responses are governed by near-field coupling of localized surface plasmons. Through single particle extinction spectroscopy correlated with electron microscopy, we reveal the effect of the composition of the repeat unit, the chain length, and extent of disorder on the energies, intensities, and line shapes of the collective resonances of individual plasmonic polymers constructed from three different sizes of gold nanoparticles. Our combined experiment and theoretical analysis focuses on the superradiant plasmon mode, which results from the most attractive interactions along the nanoparticle chain and yields the lowest energy resonance in the spectrum. This superradiant mode redshifts with increasing chain length until an infinite chain limit, where additional increases in chain length cause negligible change in the energy of the superradiant mode. We find that, among plasmonic polymers of equal width comprising nanoparticles with different sizes, the onset of the infinite chain limit and its associated energy are dictated by the number of repeat units and not the overall length, of the polymer. The intensities and linewidths of the superradiant mode relative to higher energy resonances, however, differ as the size and number of nanoparticles are varied in the plasmonic polymers studied here. These findings provide general guidelines for engineering the energies, intensities, and line shapes of the collective optical response of plasmonic polymers constructed from nanoparticles with sizes ranging from a few tens to one hundred nanometers.

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Section: -52supporting

confidence: 86%

Section: -52mentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

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Plasmonic polymers unraveled through single particle spectroscopy

et al. 2014

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“…Figure 3(a) show the spectral position of the lowest energy extinction peak for different disorders and chain lengths. In general, a larger N redshifts the resonance 54,56,57 while increasing the disorder acts to blueshift it. This blueshift, which is small or moderate (≲7% of the δ = 0 value), is less marked in the shorter chains.…”

Section: ■ Resultsmentioning

confidence: 96%

How Chain Plasmons Govern the Optical Response in Strongly Interacting Self-Assembled Metallic Clusters of Nanoparticles

et al. 2012

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Self-assembled clusters of metallic nanoparticles separated by nanometric gaps generate strong plasmonic modes that support both intense and localized near fields. These find use in many ultrasensitive chemical and biological sensing applications through surface enhanced Raman scattering (SERS). The inability to control at the nanoscale the structure of the clusters on which the optical response crucially depends, has led to the development of general descriptions to model the various morphologies fabricated. Here, we use rigorous electrodynamic calculations to study clusters formed by a hundred nanospheres that are separated by ∼1 nm distance, set by the dimensions of the macrocyclic molecular linker employed experimentally. Three-dimensional (3D) cluster structures of moderate compactness are of special interest since they resemble self-assembled clusters grown under typical diffusion-limited aggregation conditions. We find very good agreement between the simulated and measured far-field extinction spectra, supporting the equivalence of the assumed and experimental morphologies. From these results we argue that the main features of the optical response of two-and three-dimensional clusters can be understood in terms of the excitation of simple units composed of different length resonant chains. Notably, we observe a qualitative difference between short-and long-chain modes in both spectral response and spatial distribution: dimer and shortchain modes are observed in the periphery of the cluster at higher energies, whereas inside the structure longer chain excitation occurs at lower energies. We study in detail different configurations of isolated one-dimensional chains as prototypical building blocks for large clusters, showing that the optical response of the chains is robust to disorder. This study provides an intuitive understanding of the behavior of very complex aggregates and may be generalized to other types of aggregates and systems formed by large numbers of strongly interacting particles.

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“…This application was first proposed by Quinten et al 9 in 1998, and since then this system has attracted a great deal of attention. Guiding, bending, splitting, [10][11][12][13] and localization 14,15 of the optical excitations of the chain, as well as the time dependent properties, 16 have been studied carefully. Important insight into guiding properties of these systems was gained after computing the dispersion relations, 10,[17][18][19][20][21][22] both for finite and infinite chains.…”

Section: Introductionmentioning

confidence: 99%

Surface-mediated light transmission in metal nanoparticle chains

2013

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Link to publication in University of Groningen/UMCG research database Citation for published version (APA): Compaijen, P. J., Malyshev, V. A., & Knoester, J. (2013). Surface-mediated light transmission in metal nanoparticle chains. Physical Review. B: Condensed Matter and Materials Physics, 87(20), 205437-1-205437-7. [205437]. https://doi.org/10.1103/PhysRevB.87.205437 Copyright Other than for strictly personal use, it is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license (like Creative Commons).Take-down policy If you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim.Downloaded from the University of Groningen/UMCG research database (Pure): http://www.rug.nl/research/portal. For technical reasons the number of authors shown on this cover page is limited to 10 maximum. We study theoretically the efficiency of the transmission of optical signals through a linear chain consisting of identical and equidistantly spaced silver metal nanoparticles. Two situations are compared: the transmission efficiency through an isolated chain and through a chain in close proximity of a reflecting substrate. The Ohmic and radiative losses in each nanoparticle strongly affect the transmission efficiency of an isolated chain and suppress it to large extent. It is shown that the presence of a reflecting interface may enhance the guiding properties of the array. The reason for this is the energy exchange between the surface plasmon polaritons (SPPs) of the array and the substrate. We focus on the dependence of the transmission efficiency on the frequency and polarization of the incoming light, as well as on the influence of the array-interface spacing. Sometimes the effect of these parameters turns out to be counterintuitive, reflecting a complicated interplay of several transmission channels.

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Plasmon Polaritons in Finite-Length Metal−Nanoparticle Chains: The Role of Chain Length Unravelled

Cited by 112 publications

References 24 publications

Plasmonic polymers unraveled through single particle spectroscopy

Plasmonic polymers unraveled through single particle spectroscopy

How Chain Plasmons Govern the Optical Response in Strongly Interacting Self-Assembled Metallic Clusters of Nanoparticles

Surface-mediated light transmission in metal nanoparticle chains

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