Enhanced backscattering by multiple nanocylinders illuminated by TE plane wave

She, Hao-Yuan; Li, Le‐Wei; Chua, Soo Jin; Ewe, Wei-Bin; Martin, Olivier J. F.; Mosig, J. R.

doi:10.1063/1.2975214

Cited by 7 publications

(2 citation statements)

References 49 publications

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“…As the pair-distance decreases, the static coulomb energy also decreases [ 22 ]. The interaction between the cylinder pairs gathers the energy flow inside the region between the pairs and this interaction also enhances the backscattering effect [ 25 ]. However, the enhancement of the backscattering results in the reduction of the lightning-rod effect because the amount of the incident energy flow concentrating in the gap of the nanocylinder pair decreases.…”

Section: Resultsmentioning

confidence: 99%

Multiple metallic-shell nanocylinders for surface-enhanced spectroscopes

Chiu

Chao

et al. 2011

Nanoscale Res Lett

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The optical properties of multiple dielectric-core-gold-shell nanocylinder pairs are investigated by two-dimensional finite difference time domain method. The core-shell cylinders are assumed to be of the same dimension and composition. For normal incidence, the diffraction spectra of multiple cylinder pairs contain the lightning-rod plasmon mode, and the electric field intensity is concentrated in the gap between the nanocylinder pairs in the infrared region. The resonance wavelength and local field enhancement of this plasmon mode can be tuned by varying the pair-distance between the pairs, the gap-distance between the pairs, and the optical constants of the dielectric-core and the surrounding medium. The results show that the multiple core-shell nanocylinder pair contains the plasmon mode same as that of the solid metallic cylinder pairs at the long wavelength part of the spectrum. The large electric field intensity in the infrared region at long wavelength makes multiple core-shell cylinders as ideal candidates for surface-enhanced spectroscopes.

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Section: Resultsmentioning

confidence: 99%

Multiple metallic-shell nanocylinders for surface-enhanced spectroscopes

Chiu

Chao

et al. 2011

Nanoscale Res Lett

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“…1 In this context, a large amount of both theoretical and experimental investigations addressing either the linear or nonlinear optical properties has been performed on systems of increasing complexity. [2][3][4][5][6][7][8] These studies evidenced the influence of size, shape, and environment on the properties of isolated nanoparticles. The potential applications of these metallic systems extend from colloidal markers, nanobiosensors, light emission enhancement devices, plasmonic circuitry, 9,10 plasmonic tweezers, 11 to stimulated emission control.…”

Section: Introductionmentioning

confidence: 89%

Sculpting nanometer-sized light landscape with plasmonic nanocolumns

Marty

Arbouet

Girard

et al. 2009

The Journal of Chemical Physics

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Plasmonic structures are commonly used to both confine and enhance surface electromagnetic fields. In the past ten years, their peculiar optical properties have given rise to many promising applications ranging from high density data storage to surface optical trapping. In this context, we investigated both far-field and near-field optical response of a collection of densely packed silver nanocolumns embedded in amorphous aluminum oxide using the discrete dipole approximation. In the far field, a good fit of the calculated to the experimental absorption spectra can only be achieved when in addition to interaction between neighboring nanocolumns, a nanorod shape with periodic shrinks mimicking the experimental morphology of the nanocolumns is used. In the near field, modulated field intensities following the nanocolumns distribution and tunable with the incident wavelength are predicted outside the region occupied by the nanocolumns. This plasmonic image transfer has a resolution of approximately 1.8D where D is the diameter of the nanocolumns that in our case is 2.4 nm.

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Surface plasma resonance characteristics of cylindrical multilayer metal‐coated silicon nanoparticles

Zhang

Cao

et al. 2020

Micro & Optical Tech Letters

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In this article, the light scattering properties of cylindrical, three‐layer, silver‐coated silicon nanoparticles of the same size are investigated. Based on the T‐matrix methods, the light transmission and reflection characteristics of the multilayer structure are strictly derived. The scattering cross section (SCS) of the system and the near‐field Hz distribution are numerically calculated. The results show that surface plasmas (SPs) with different frequencies in the outer interface between the metal shell and air can be excited by the incident light and were resonant in different cavities formed by the silver‐coated silicon nanoparticles. When the incident light has higher frequencies, the SPs are excited at the inner interface between the silver shell and the silicon rod by the penetration of the light into the metal shell, and are resonant in the internal dielectric nuclei. These special SPs resonant phenomena have broad applications in the fields of surface plasma resonance sensors and detector.

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Enhanced backscattering by multiple nanocylinders illuminated by TE plane wave

Cited by 7 publications

References 49 publications

Multiple metallic-shell nanocylinders for surface-enhanced spectroscopes

Multiple metallic-shell nanocylinders for surface-enhanced spectroscopes

Sculpting nanometer-sized light landscape with plasmonic nanocolumns

Surface plasma resonance characteristics of cylindrical multilayer metal‐coated silicon nanoparticles

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