Dipole, quadrupole and octupole plasmon resonance modes in non-concentric nanocrescent/nanodisk structure: local field enhancement in the visible and near infrared regions

Zhang, Y.; Jia, Tianxu; Zhang, S.A.; Ding, Feng; Xu, Zhuo

doi:10.1364/oe.20.002924

Cited by 25 publications

(17 citation statements)

References 30 publications

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“…It is important to mention that in the regime of "large" nanospheres (R=10-100 nm), some other effects as dynamical surface screening and Lorentz friction become relevant [13,45,30], and their interplay alongside with softened quantum confinement contribute to a nonmonotonic behavior for the plasmon resonance, before the classical limit is actually reached in micro-metric particles [8,46]. These graphs are consistent with previous works in which the dipole plasmon mode is found to be by far the main contribution to the field enhancement in symmetric structures [47,48]. Additionally they help to visualize how the LSPR is strengthened within a model in which the wave functions of the carriers constituting the plasma are considered.…”

Section: Resultssupporting

confidence: 89%

Quantum Confinement Effects on the Near Field Enhancement in Metallic Nanoparticles

et al. 2016

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In this work we study the strong confinement effects on the electromagnetic response of metallic nanoparticles. We calculate the field enhancement factor for nanospheres of various radii by using optical constants obtained from both classical and quantum approaches, and compare their size dependent features. To evaluate the scattered near field, we solve the electromagnetic wave equation within a finite element framework. When quantization of electronic states is considered for the input optical functions, a significant blue-shift in the resonance of the enhanced field is observed, in contrast to the case in which functions obtained classically are used. Furthermore, a noticeable underestimation of the field amplification is found in the calculation based on a classical dielectric function. Our results are in good agreement with available experimental reports and provide relevant information on the cross-over between classical and quantum regime, useful in potentiating nanoplasmonics applications.

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Section: Resultssupporting

confidence: 89%

Quantum Confinement Effects on the Near Field Enhancement in Metallic Nanoparticles

et al. 2016

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“…The higher the resonance mode, the bigger the blueshift. We notice that the width of the half‐maximum at each resonance peak becomes smaller as the thickness decreases, indicating more sensitivity as a sensor for the thin geometry . From Fig.…”

Section: Impact Of Structure Parameters and Surroundings On The Lsp Rmentioning

confidence: 79%

Ultrathin plasmonic metamaterial for spoof localized surface plasmons

Shen

Cui

2013

Laser & Photonics Reviews

261

164

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The multipolar spoof localized surface plasmons (LSPs) on a planar textured metallic disk are proposed and experimentally demonstrated at microwave frequencies. Based on ultrathin metal film printed on a thin dielectric substrate, the designed plasmonic metamaterial clearly shows multipolar plasmonic resonances, including the dipole, quadrupole, hexapole, octopole, decapole, dodecapole, and quattuordecpole modes. Both numerical simulations and experiments are in good agreement. It is shown that the spoof LSP resonances are sensitive to the disk's geometry and local dielectric environments. Hence, the ultrathin textured metallic disk may be used as plasmonic sensors and find potential applications in the microwave and terahertz frequencies.

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“…Recently, these multipole plasmonic resonance modes in metal shells or cavity structures have gained much renewed attention due to the potential applications in bio-sensing, 26 uorescence, 27 nanolasers, 28,29 or nonlinear nano-photonics. 30 Commonly, a highly localized electromagnetic eld can be obtained in or on the plasmonic cavities through the resonances in multipole modes, which have been proposed to create high quality (Q) factor plasmonic resonators 31,32 or ultra-small-mode-volume devices, e.g. nanolasers, surface plasmon amplication by stimulated emission of radiation (SPASER), etc.…”

Section: Introductionmentioning

confidence: 99%

Multipole plasmon resonances in self-assembled metal hollow-nanospheres

Yin

Zang

et al. 2014

Nanoscale

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Recently, multipole plasmonic mode resonances in metal hollow structures, such as dipole, quadrupole, and octupole modes, have been widely investigated by researchers with the aim for potential applications in bio-sensing, fluorescence, nanolasers or nonlinear nano-photonics. Here, in this work, the multipole plasmon resonances in self-assembled metal hollow-nanospheres (HNSs) are theoretically and experimentally demonstrated and the hot spots originating from the higher order mode plasmonic resonance and interparticle coupling effect are proposed to be used for Raman scattering enhancements. Dipole, quadrupole, octupole and hexadecapole mode plasmonic resonances were clearly resolved in the extinction spectra of these Ag HNS arrays showing good agreement with the theoretical simulation results. Strong regular hot spots were obtained around the surface and in the gaps of the Ag HNSs through the higher order mode plasmonic resonances and corresponding interparticle coupling effect between the HNSs. Maximum local field intensity was accomplished by optimizing the size of as well as the coupling distance between the HNSs and then it was applied to SERS sensing. Raman mapping also demonstrated these self-assembled plasmonic cavity arrays to be a stable and uniform SERS-active substrate.

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Dipole, quadrupole and octupole plasmon resonance modes in non-concentric nanocrescent/nanodisk structure: local field enhancement in the visible and near infrared regions

Cited by 25 publications

References 30 publications

Quantum Confinement Effects on the Near Field Enhancement in Metallic Nanoparticles

Quantum Confinement Effects on the Near Field Enhancement in Metallic Nanoparticles

Ultrathin plasmonic metamaterial for spoof localized surface plasmons

Multipole plasmon resonances in self-assembled metal hollow-nanospheres

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