Strip and gap plasmon polariton optical resonators

Søndergaard, Thomas; Bozhevolnyi, Sergey I.

doi:10.1002/pssb.200743225

Cited by 72 publications

(56 citation statements)

References 28 publications

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“…[28][29][30] This enables reduction of the integration contours in the associated IEs to the corresponding median lines at the expense of introduction of certain "effective" or generalized boundary conditions. Such an approach leads to very economic and rapidly convergent algorithms, whose results agree very well with full boundary [2][3][4] and volume IE results. 1,31,32 It has been used earlier in the analysis of the wave scattering by the infinite gratings of thin material strips [20][21][22] using the method of analytical regularization, and more recently by a dielectric strip using the Nystrom method.…”

Section: Introductionsupporting

confidence: 66%

“…Localized surface-plasmon resonances (we will call them "plasmons" for brevity) on the standalone and coupled noble-metal wires (in the H-polarization case) are an area of active research in nanophotonics since the 2000s, [1][2][3][4] although more recently the emphasis has been shifted to the analysis of three-dimensional plasmonic particles. [5][6][7][8] Periodic arrays or gratings made of noblemetal nanosize elements are attracting even greater attention of research community.…”

Section: Introductionmentioning

confidence: 99%

“…Although the first and higher-order plasmon resonances on thin strips and rods have been analyzed (see Ref. 4 and also Refs. [23][24][25][26], periodicity-induced effects for truly multi-element strip gratings have not been studied so far.…”

Section: Introductionmentioning

confidence: 99%

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Finite gratings of many thin silver nanostrips: Optical resonances and role of periodicity

Shapoval¹,

Nosich²

2013

AIP Advances

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We study numerically the optical properties of the periodic in one dimension flat gratings made of multiple thin silver nanostrips suspended in free space. Unlike other publications, we consider the gratings that are finite however made of many strips that are well thinner than the wavelength. Our analysis is based on the combined use of two techniques earlier verified by us in the scattering by a single thin strip of conventional dielectric: the generalized (effective) boundary conditions (GBCs) imposed on the strip median lines and the Nystrom-type discretization of the associated singular and hyper-singular integral equations (IEs). The first point means that in the case of the metal strip thickness being only a small fraction of the free-space wavelength (typically 5 nm to 50 nm versus 300 nm to 1 μm) we can neglect the internal field and consider only the field limit values. In its turn, this enables reduction of the integration contour in the associated IEs to the strip median lines. This brings significant simplification of the scattering analysis while preserving a reasonably adequate modeling. The second point guarantees fast convergence and controlled accuracy of computations that enables us to compute the gratings consisting of hundreds of thin strips, with total size in hundreds of wavelengths. Thanks to this, in the H-polarization case we demonstrate the build-up of sharp grating resonances (a.k.a. as collective or lattice resonances) in the scattering and absorption cross-sections of sparse multi-strip gratings, in addition to better known localized surface-plasmon resonances on each strip. The grating modes, which are responsible for these resonances, have characteristic near-field patterns that are distinctively different from the plasmons as can be seen if the strip number gets larger. In the E-polarization case, no such resonances are detectable however the build-up of Rayleigh anomalies is observed, accompanied by the reduced scattering and absorption.

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Section: Introductionsupporting

confidence: 66%

Section: Introductionmentioning

confidence: 99%

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Finite gratings of many thin silver nanostrips: Optical resonances and role of periodicity

Shapoval¹,

Nosich²

2013

AIP Advances

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“…In this connection, noble-metal nanosize strips and their finite ensembles are very attractive as easily manufactured components of various optical devices [1,2]. The typical dimensions of metal nanostrips are: the width from 100 to 1000 nm and the thickness from 5 to 50 nm.…”

Section: Introductionmentioning

confidence: 99%

“…Thereby, the thickness is some 10 to 180 times smaller than the wavelength in the visible band. PRs are the Fabry-Perot-like resonances, formed by the reflections of the short-range surface plasmon wave of the corresponding metal layer from the strip edges [2]. Therefore, their wavelengths can be easily tuned by changing the strip width and thickness.…”

Section: Introductionmentioning

confidence: 99%

Grating and plasmon resonances in the scattering of light by finite silver nanostrip gratings

Shapoval¹

2012

Semicond. Phys. Quantum Electron. Optoelectron.

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Abstract. We study numerically the H-polarized wave scattering by finite flat gratings of N silver nanostrips in free space in the context of co-existence of surface plasmon resonances (SPR) and periodicity-induced grating resonances (GRs). The accurate numerical analysis is carried out using the previously developed combination of two-side generalized boundary conditions imposed on the strip median lines and Nystrom-type discretization of the relevant singular and hyper-singular integral equations. Our computations are focused on specific periodicity-caused coupling which leads to the existence of the grating or lattice resonances near to λ G = p/m, m = 1, 2,… (at normal incidence). These resonances result in large reflection, transmission, absorption, and near-field enhancement. We also study the interplay of SPR and GR, if they approach each other and the optical response dependence of the grating parameters, such as overall dimension and number of strips.

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Growth Mechanism and Surface Functionalization of Metal Chalcogenides Nanostructures

Tahir

Sahoo

Hoshyargar

et al. 2014

Metal Chalcogenide Nanostructures for Renewable Energy Applications

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Following the discovery of carbon fullerenes and nanotubes (NTs), nanostructured materials and their synthesis have attracted tremendous attention due to their superior mechanical properties, their unique electronic behavior, and their high potential in making technologically advanced nanodevices. Among different classes, layered metal chalcogenides nanostructures are of interest for a variety of applications ranging from nanoelectronics or as source materials for energy applications, nanotribology and in heterogeneous catalysis. These nanoparticles are metastable phases. Therefore, equilibrium methods are necessary to prevent the formation of the thermodynamically stable bulk phase. On the other hand, high energies are needed to "knit" together the folded layers. Several physical techniques such as laser ablation and arch discharge are used for the synthesis of these inorganic NTs and fullerene-like particles. Apart from these high-energy techniques other processes such as oxide-to-sulfide conversion, hydrothermal, solvothermal, or wet chemical synthesis were found to be useful for the synthesis of these particles.In order to benefit from the outstanding properties of nanomaterials, their functionalization is essential, as any application in materials and devices is hindered by difficulties in processing and manipulation. Only the attachment of appropriate chemical functionalities on the nanoparticle surface allows a tailoring of their properties for the respective application. Tailoring of the surface chemical bonds might as well lead to an optimized interaction of the nanoparticles with solvent molecules, polymer matrices, or biomolecules. Therefore, the nanoengineering of

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Strip and gap plasmon polariton optical resonators

Cited by 72 publications

References 28 publications

Finite gratings of many thin silver nanostrips: Optical resonances and role of periodicity

Finite gratings of many thin silver nanostrips: Optical resonances and role of periodicity

Grating and plasmon resonances in the scattering of light by finite silver nanostrip gratings

Growth Mechanism and Surface Functionalization of Metal Chalcogenides Nanostructures

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