Fano resonance in dual-disk ring plasmonic nanostructures

Niu, Lifang; Zhang, Jing Bo; Fu, Yuan Hsing; Kulkarni, Sneha; Anchuk, Boris Luky

doi:10.1364/oe.19.022974

Cited by 52 publications

(25 citation statements)

References 10 publications

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“…The quadrupole resonance exhibits extremely high sensitivity to the frequency of the incident light, where small variations can change forward scattering to backward scattering [12][13][14]. This offers potential applications in the development of highly sensitive biochemical sensors [15].…”

Section: Introductionmentioning

confidence: 99%

Tunable Fano resonances in silver–silica–silver multilayer nanoshells

Luk’yanchuk

Zhang

2012

Appl. Phys. A

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We study the plasmonic properties of silversilica-silver multilayer nanoshells using finite-difference time-domain methods. Silver is a weakly dissipating metal and is able to support higher order resonances compared to strongly dissipating metals like gold. We show that Fano resonances occur even in symmetric cases. Symmetry breaking via the introduction of core offset further enhances these Fano resonance peaks and leads to the appearance of higher order resonances. The optical properties of the multilayer nanoshells are explained using the plasmon hybridization theory and the results are compared to similar multilayer nanoshells with gold core and outer shell.

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Section: Introductionmentioning

confidence: 99%

Tunable Fano resonances in silver–silica–silver multilayer nanoshells

Luk’yanchuk

Zhang

2012

Appl. Phys. A

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“…The plasmon modes are super radiant (bright mode) or subradiant (dark mode), depending on the coupling strength between the incident light and plasmon mode [2]. Fano resonance comes from the destructive interference of bright and dark plasmon modes [3][4][5], which is supported by different segments of the structure [6,7] or by the whole structure [8][9][10][11][12]. For the Fano resonances of plasmonic nanostructures, figure of merit (FOM) and contrast ratio (CR) are the two most important factors, which determine the overall performance in sensing applications [12].…”

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confidence: 99%

Fano resonances in disk–ring plasmonic nanostructure: strong interaction between bright dipolar and dark multipolar mode

et al. 2012

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This Letter presents a plasmonic nanostructure consisting of a nanodisk and a nanoring. The nanodisk is outside of the nanoring. The quadrupolar, hexapolar, and octupolar resonance modes of the nanoring are excited easily by the bright dipolar mode of nanodisks. This nanostructure shows strong interaction and deep Fano dips. In addition, the resonance frequency, depth, and line width of Fano dips can be tuned by changing the geometrical parameters of the nanodisk and nanoring. These plasmonic nanostructures show both high contrast ratio and high figure of merit. Such characters make them suitable for chemical and biological sensing.

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“…Numerical simulation, which efficiently combines theoretical and experimental study, plays a very important role in the study of plasmonics. For metal nanostructures supporting SPR, the simulation study begins with single sphere, ellipsoid, ring, and disk and then directed to the combination of them [5][6][7][8][9][10][11]. Some convenient and flexible ways to manipulate the surface plasmon resonance such as coupling and symmetry breaking of nanoparticles are reported, and expected absorption peaks are obtained in certain range [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Generation of High-Order Resonance Modes in Visible and Near-Infrared Range from Square Ring-Disk System

Wang

Zheng

et al. 2015

Plasmonics

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A novel square ring-disk (SRD) nanostructure is designed by combining a square ring with a square disk, and its high-order plasmonic resonance is investigated numerically by using COMSOL Multiphysics. The symmetry break of the system is obtained by adjusting the relative position of the square disk and the square ring. The quadrupolar, octupolar, and hexadecapolar plasmonic resonance modes on the square ring and the dipolar plasmonic resonance on the square disk are successfully generated, and their resonance peaks are presented. Meanwhile, the hexadecapolar mode of the square ring appears only when the square disk moves vertically to the polarization direction of the incident light. This research may have potential application in designing highperformance biochemical sensor or SERS and SEF devices in the visible and near-infrared wavelength range.

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Fano resonance in dual-disk ring plasmonic nanostructures

Cited by 52 publications

References 10 publications

Tunable Fano resonances in silver–silica–silver multilayer nanoshells

Tunable Fano resonances in silver–silica–silver multilayer nanoshells

Fano resonances in disk–ring plasmonic nanostructure: strong interaction between bright dipolar and dark multipolar mode

Generation of High-Order Resonance Modes in Visible and Near-Infrared Range from Square Ring-Disk System

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