Metal‐nanoparticle plasmonics

Pelton, Matthew; Aizpurua, Javier; Bryant, Garnett W.

doi:10.1002/lpor.200810003

Cited by 703 publications

(674 citation statements)

References 195 publications

(235 reference statements)

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“…Surface plasmon polaritons (SPPs) are electromagnetic surface waves coupled to collective excitations of the free electrons in conductors. When these hybrid excitations occur in conducting nanostructures-such as nanoparticles [8,9] or engineered metamaterials [10,11]the corresponding nonpropagating plasmon polaritons are generally referred to as localized surface plasmons (LSPs) [1]. Perhaps the most alluring property of plasmons is that they exhibit large field enhancements and deep subwavelength confinement of EM fields, thereby circumventing the diffraction limit of conventional optics [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Modeling the excitation of graphene plasmons in periodic grids of graphene ribbons: An analytical approach

et al. 2016

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We study electromagnetic scattering and subsequent plasmonic excitations in periodic grids of graphene ribbons. To address this problem, we develop an analytical method to describe the plasmon-assisted absorption of electromagnetic radiation by a periodic structure of graphene ribbons forming a diffraction grating for THz and mid-IR light. The major advantage of this method lies in its ability to accurately describe the excitation of graphene surface plasmons (GSPs) in one-dimensional (1D) graphene gratings without the use of both time-consuming, and computationally demanding full-wave numerical simulations. We thus provide analytical expressions for the reflectance, transmittance, and plasmon-enhanced absorbance spectra, which can be readily evaluated using any personal computer with little to no programming. We also introduce a semianalytical method to benchmark our previous results and further compare the theoretical data with spectra taken from experiments, for which we observe a very good agreement. These theoretical tools may therefore be applied to design new experiments and cutting-edge nanophotonic devices based on graphene plasmonics.

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Section: Introductionmentioning

confidence: 99%

Modeling the excitation of graphene plasmons in periodic grids of graphene ribbons: An analytical approach

et al. 2016

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“…LSPR occurs when the frequency of the electric field of the incident light resonates with the oscillations of MNPs conduction electrons. The excited MNPs thereby strongly absorb (near-field effect) and scatter (far-field effect) the incident light, producing an enhancement up to a factor of 100 [3], in the electric field surrounding them [8]. Previous studies showed that the PCE of BHJOSCs was improved considerably by MNPs incorporated into OSC layers either on top of indium tin oxide (ITO) [9][10][11][12], within poly(3,4-ethyl-enedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) [13][14][15], within P3HT:PCBM [16], or with the back electrode [17].…”

mentioning

confidence: 99%

Optically-enhanced performance of polymer solar cells with low concentration of gold nanorods in the anodic buffer layer

Mahmoud

Zhang

et al. 2012

Organic Electronics

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Abstract:In this work, the effect of gold nanorods on the performance of poly(3-hexylthiophene-2,5-diyl):[6,6]-phenyl-C 61 -butyric-acid-methyl-ester bulk heterojunction solar cells was investigated. Gold nanorods were introduced into the anodic buffer layer by simply blending them with the solution of poly(3,4-ethyl-enedioxythiophene):poly(styrenesulfonate). Even with a fairly low density of the nanorods, the resulting devices showed a remarkable 21.3% enhancement in the power conversion efficiency and a 13% enlargement in the short circuit current. By examining the absorbance profiles of active films made with different conditions, such enhancements can be related to the localized transverse and longitudinal plasmon resonance modes in the metallic nanoparticles. Gold nanorods helped as well in reducing the device series resistance by up to 36%, which also contributed to the global enhancement in the efficiency.

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“…Tuning of the LSPR properties can be achieved through synthesis by exploiting differences in nanoparticle size, geometry, surface morphology, aggregation, aspect ratio, and the dielectric constant of the surrounding media [15,33,[35][36][37][38][39][40][41][42][43][44][45]. Since each application relies on a specific set of conditions for optimized efficiency, the structural parameters of the nanoparticles employed for use must be tailored accordingly.…”

Section: Metal Nanostructuresmentioning

confidence: 99%

Controllable Cobalt Oxide/Au Hierarchically Nanostructured Electrode for Nonenzymatic Glucose Sensing

2016

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By electrodeposition and galvanic replacement reaction, we developed a facile, time-saving, cost-effective, and environmentally friendly, two-step synthesis route to obtain a controllable cobalt oxide/Au hierarchically nanostructured electrode for glucose sensing. The nanomaterials were characterized by transmission electron microscopy, scanning electron microscopy, Raman spectroscopy, energy-dispersive spectrometry, and X-ray photoelectron spectroscopy, meanwhile, the sensing performance was investigated by cyclic voltammetry and amperometric response. The results revealed that this novel electrode exhibited excellent electrocatalytic performance toward glucose oxidation, with a wide double-linear range from 0.2 μM to 20 mM and a low detection limit of 0.1 μM based on a signal-to-noise ratio of 3, which was mainly attributed to the ability of loading a small amount of Au with good electron conductivity on the surface of cobalt oxide nanosheets with large active surface area and synergistic electrocatalytic activity of Au and cobalt oxide toward glucose electrooxidation. This facile, sensitive, and selective glucose sensor is also proven to be suitable for the detection of glucose in human serum.

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Metal‐nanoparticle plasmonics

Cited by 703 publications

References 195 publications

Modeling the excitation of graphene plasmons in periodic grids of graphene ribbons: An analytical approach

Modeling the excitation of graphene plasmons in periodic grids of graphene ribbons: An analytical approach

Optically-enhanced performance of polymer solar cells with low concentration of gold nanorods in the anodic buffer layer

Controllable Cobalt Oxide/Au Hierarchically Nanostructured Electrode for Nonenzymatic Glucose Sensing

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