Plasmon Resonance and Enhanced Near-Field of Anisotropic Nanoparticle Systems: Unified Analysis by Factorization of Light-Excited Dipole Distribution

2021 ◽  
Author(s):  
Masafuyu Matsui ◽  
Hisao Nakamura
Keyword(s):  
Plasmon Resonance ◽  
Particle Shape ◽  
Near Field ◽  
Factorization Scheme

We develop a simple factorization scheme to analyze the mechanism of dipole-plasmon resonance, which is controlled by particle shape or the gap distance of neighboring particles. The method focuses on...

Improved near field lithography by surface plasmon resonance in groove-patterned masks

2009 ◽  
Vol 11 (12) ◽  
pp. 125003 ◽  
Author(s):  
Beibei Zeng ◽  
Li Pan ◽  
Ling Liu ◽  
Liang Fang ◽  
Changtao Wang ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Near Field

Localized surface plasmon resonance shift and its application in scanning near-field optical microscopy

2021 ◽  
Author(s):  
Jiawei Zhang ◽  
Gitanjali Kolhatkar ◽  
Andreas Ruediger
Keyword(s):  
Raman Spectroscopy ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Near Field ◽  
Localized Surface Plasmon ◽  
Resonance Shift ◽  
Raman Modes ◽  
Tip Enhanced Raman Spectroscopy

The localized surface plasmon resonance (LSPR) position in tip-enhanced Raman spectroscopy (TERS) is of great importance to the understanding and interpretation of the relative intensity of different enhanced Raman modes....

Near-field optical sensors for particle shape measurements

2003 ◽  
Vol 3 (5) ◽  
pp. 646-651 ◽  
Author(s):  
J.H. Nieuwenhuis ◽  
J. Bastemeijer ◽  
A. Bossche ◽  
M.J. Vellekoop
Keyword(s):  
Optical Sensors ◽  
Particle Shape ◽  
Near Field

scholarly journals Evolution and Tailoring of DUV Plasmonic Properties in Al Nanoparticle Arrays by UV Irradiation

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Yanyue Ding ◽  
Jian Chen ◽  
Gan Xu ◽  
Fei Liu ◽  
Min Han
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Ultraviolet Irradiation ◽  
Near Field ◽  
Surface Oxidation ◽  
Blue Shift ◽  
Nanoparticle Arrays ◽  
Plasmon Band ◽  
Resonance Band

Ultraviolet irradiation was used to tailor the surface plasmon band of the densely distributed aluminium nanoparticle arrays fabricated by gas-phase deposition. We showed that the broad surface plasmon resonance band of the as-prepared sample could be tuned to a sharp and strong resonance band in the deep ultraviolet optical range, with a large blue shift of the peak wavelength. The evolution of the surface plasmon resonance properties was attributed to the ultraviolet irradiation-improved surface oxidation of the nanoparticles, which eliminated the near-field couplings between the closely spaced nanoparticles by increasing their interspacing.

scholarly journals Surface plasmon resonance “hot spots” and near-field enhanced spectroscopy at interfaces

2019 ◽  
Vol 68 (14) ◽  
pp. 147801
Author(s):  
Shi-Liang Feng ◽  
Jing-Yu Wang ◽  
Shu Chen ◽  
Ling-Yan Meng ◽  
Shao-Xin Shen ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Hot Spots ◽  
Near Field

scholarly journals Ultranarrow and Tunable Fano Resonance in Ag Nanoshells and a Simple Ag Nanomatryushka

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 2039
Author(s):  
Ping Gu ◽  
Xiaofeng Cai ◽  
Guohua Wu ◽  
Chenpeng Xue ◽  
Jing Chen ◽  
...  
Keyword(s):  
Electric Fields ◽  
Plasmon Resonance ◽  
Slow Light ◽  
Structural Parameters ◽  
Near Field ◽  
Plasmon Mode ◽  
Formation Mechanisms ◽  
Hybrid Mode ◽  
High Q ◽  
Field Coupling

We study theoretically the Fano resonances (FRs) produced by the near-field coupling between the lowest-order (dipolar) sphere plasmon resonance and the dipolar cavity plasmon mode supported by an Ag nanoshell or the hybrid mode in a simple three-layered Ag nanomatryushka constructed by incorporating a solid Ag nanosphere into the center of Ag nanoshell. We find that the linewidth of dipolar cavity plasmon resonance or hybrid mode induced FR is as narrow as 6.8 nm (corresponding to a high Q-factor of ~160 and a long dephasing time of ~200 fs) due to the highly localized feature of the electric-fields. In addition, we attribute the formation mechanisms of typical asymmetrical Fano line profiles in the extinction spectra to the constructive (Fano peak) and the destructive interferences (Fano dip) arising from the symmetric and asymmetric charge distributions between the dipolar sphere and cavity plasmon or hybrid modes. Interestingly, by simply adjusting the structural parameters, the dielectric refractive index required for the strongest FR in the Ag nanomatryushka can be reduced to be as small as 1.4, which largely reduces the restriction on materials, and the positions of FR can also be easily tuned across a broad spectral range. The ultranarrow linewidth, highly tunability together with the huge enhancement of electric fields at the FR may find important applications in sensing, slow light, and plasmon rulers.

scholarly journals Design and Optimization of Plasmon Resonance Sensor Based on Micro–Nano Symmetrical Localized Surface

Symmetry ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 841
Author(s):  
Fengyu Yin ◽  
Jin Liu ◽  
Haima Yang ◽  
Aleksey Kudreyko ◽  
Bo Huang
Keyword(s):  
Refractive Index ◽  
Plasmon Resonance ◽  
Incident Angle ◽  
Near Field ◽  
Measurement Techniques ◽  
Fdtd Simulation ◽  
Localized Surface Plasmon ◽  
Small Scale ◽  
Surface Plasma Resonance ◽  
Resonance Sensor

Surface Plasma resonance (SPR) sensors combined with biological receptors are widely used in biosensors. Due to limitations of measurement techniques, small-scale, low accuracy, and sensitivity to the refractive index of solution in traditional SPR prism sensor arise. As a consequence, it is difficult to launch commercial production of SPR sensors. The theory of localized surface plasmon resonance (LSPR) developed based on SPR theory has stronger coupling ability to near-field photons. Based on the LSPR sensing theory, we propose a submicron-sized golden-disk and graphene composite structure. By varying the thickness and diameter of the array disk, the performance of the LSPR sensor can be optimized. A graphene layer sandwiched between the golden-disk and the silver film can prevent the latter from oxidizing. Symmetrical design enables high-low concentration of dual-channel distributed sensing. As the fixed light source, we use a 632.8-nm laser. A golden nano-disk with 45 nm thickness and 70 nm radius is designed, using a finite difference time domain (FDTD) simulation system. When the incident angle is 42°, the figure of merit (FOM) reaches 8826, and the measurable refractive index range reaches 0.2317.

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