Hybridized Plasmonic Gap Mode of Gold Nanorod on Mirror Nanoantenna for Spectrally Tailored Fluorescence Enhancement

ACS Photonics ◽  
2018 ◽  
Vol 5 (8) ◽  
pp. 3421-3427 ◽  
Author(s):  
Hiroshi Sugimoto ◽  
Shiho Yashima ◽  
Minoru Fujii
Keyword(s):  
Fluorescence Enhancement ◽  
Gold Nanorod ◽  
Plasmonic Gap ◽  
Gap Mode

Plasmonic gap mode nanocavities at telecommunication wavelengths

2014 ◽  
Author(s):  
Pi-Ju Cheng ◽  
Chen-Ya Weng ◽  
Shu-Wei Chang ◽  
Tzy-Rong Lin ◽  
Chung-Hao Tien
Keyword(s):  
Plasmonic Gap ◽  
Gap Mode

scholarly journals Plasmonic gap-mode nanocavities with metallic mirrors in high-index cladding

2013 ◽  
Vol 21 (11) ◽  
pp. 13479 ◽  
Author(s):  
Pi-Ju Cheng ◽  
Chen-Ya Weng ◽  
Shu-Wei Chang ◽  
Tzy-Rong Lin ◽  
Chung-Hao Tien
Keyword(s):  
High Index ◽  
Plasmonic Gap ◽  
Gap Mode

Fluorescence Enhancement and Spectral Shaping of Silicon Quantum Dot Monolayer by Plasmonic Gap Resonances

2016 ◽  
Vol 120 (50) ◽  
pp. 28795-28801 ◽  
Author(s):  
Shiho Yashima ◽  
Hiroshi Sugimoto ◽  
Hiroyuki Takashina ◽  
Minoru Fujii
Keyword(s):  
Quantum Dot ◽  
Fluorescence Enhancement ◽  
Spectral Shaping ◽  
Silicon Quantum Dot ◽  
Plasmonic Gap

Fluorescence Enhancement from Individual Plasmonic Gap Resonances

ACS Nano ◽  
2010 ◽  
Vol 4 (6) ◽  
pp. 3309-3317 ◽  
Author(s):  
Marcus Schmelzeisen ◽  
Yi Zhao ◽  
Markus Klapper ◽  
Klaus Müllen ◽  
Maximilian Kreiter
Keyword(s):  
Fluorescence Enhancement ◽  
Plasmonic Gap

scholarly journals Graphene-coupled nanowire hybrid plasmonic gap mode–driven catalytic reaction revealed by surface-enhanced Raman scattering

Nanophotonics ◽  
2020 ◽  
Vol 9 (15) ◽  
pp. 4519-4527
Author(s):  
Ze Li ◽  
Yan Pan ◽  
Qingzhang You ◽  
Lisheng Zhang ◽  
Duan Zhang ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Catalytic Reaction ◽  
Oblique Incidence ◽  
Normal Incidence ◽  
Surface Enhanced Raman Scattering ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Plasmonic Gap ◽  
Gap Mode

AbstractThe single-layer graphene (SLG)-coupled nanowire (NW) hybrid plasmonic gap mode (PGM)-driven molecular catalytic reaction was investigated experimentally and theoretically. First, an SLG-coupled NW was constructed, then the surface-enhanced Raman scattering (SERS) effect of graphene in the hybrid plasmonic gap was studied via the normal and oblique incidence of excitation light. The SERS peaks of the D and G of graphene are more intensely enhanced by oblique incidence than by normal incidence. Furthermore, the catalytic reaction of the dimerization of the 4-nitrobenzenethiol molecule to p,p′-dimercaptoazobenzene molecule driven by PGM was carried out by SERS. It was demonstrated that the efficiency of the PGM-driven catalytic reaction is much higher for oblique incidence than that for normal incidence. The mechanism of the PGM-driven catalytic reaction was studied by a finite-difference time-domain numerical simulation. When the PGM is excited by oblique incidence with θ = 30°, the coupling between the NW and SLG/SiO2 substrate increases to the maximum value. This is clearly evidenced by the excitation of a vertical bonding dipolar plasmon mode under the dipole approximation. The theoretical and experimental results were consistent with each other. This research may open up a pathway toward controlling PGM-driven catalytic reactions through polarization changes in excitation laser incidence on single anisotropic nanostructures.

scholarly journals Hydrogen Sensor: Detecting Far-Field Scattering of Nano-Blocks (Mg, Ag, and Pd)

Sensors ◽  
2020 ◽  
Vol 20 (14) ◽  
pp. 3831
Author(s):  
Eunso Shin ◽  
Young Jin Lee ◽  
Hyoungjoo Nam ◽  
Soon-Hong Kwon
Keyword(s):  
Hydrogen Concentration ◽  
Dielectric Material ◽  
Incident Light ◽  
Hydrogen Sensor ◽  
Far Field ◽  
Resolution Limit ◽  
Atomic Lattice ◽  
Scattering Pattern ◽  
Plasmonic Gap ◽  
Gap Mode

Hydrogen sensor technologies have been rapidly developing. For effective and safe sensing, we proposed a hydrogen sensor composed of magnesium (Mg), silver (Ag), and palladium (Pd) nano-blocks that overcomes the spectral resolution limit. This sensor exploited the properties of Mg and Pd when absorbing hydrogen. Mg became a dielectric material, and the atomic lattice of Pd expanded. These properties led to changes in the plasmonic gap mode between the nano-blocks. Owing to the changing gap mode, the far-field scattering pattern significantly changed with the hydrogen concentration. Thus, sensing the hydrogen concentration was able to be achieved simply by detecting the far-field intensity at a certain angle for incident light with a specific wavelength.

Gold Nanorod Size-Dependent Fluorescence Enhancement for Ultrasensitive Fluoroimmunoassays

2021 ◽  
Vol 13 (9) ◽  
pp. 11414-11423
Author(s):  
Chao Liang ◽  
Jingyi Luan ◽  
Zheyu Wang ◽  
Qisheng Jiang ◽  
Rohit Gupta ◽  
...  
Keyword(s):  
Fluorescence Enhancement ◽  
Gold Nanorod ◽  
Size Dependent
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