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

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.

Tunable light absorbance by exciting the plasmonic gap mode for refractive index sensing

2018 ◽  
Vol 43 (7) ◽  
pp. 1427 ◽  
Author(s):  
Linling Qin ◽  
Shaolong Wu ◽  
Jian-hua Deng ◽  
Liujing Li ◽  
Xiaofeng Li
Keyword(s):  
Refractive Index ◽  
Refractive Index Sensing ◽  
Light Absorbance ◽  
Plasmonic Gap ◽  
Gap Mode

SiGe metallized stub and plasmonic gap mode electro-absorption modulators

2011 ◽  
Author(s):  
Roney Thomas ◽  
Zoran Ikonic ◽  
Robert W. Kelsall
Keyword(s):  
Plasmonic Gap ◽  
Gap Mode

Silicon Nanowire on Mirror Nanoantennas: Engineering Hybrid Gap Mode for Light Sources and Sensing Platforms

2020 ◽  
Vol 3 (7) ◽  
pp. 7223-7230
Author(s):  
Hiroshi Sugimoto ◽  
Ryosuke Imaizumi ◽  
Tatsuki Hinamoto ◽  
Takahiro Kawashima ◽  
Minoru Fujii
Keyword(s):  
Silicon Nanowire ◽  
Light Sources ◽  
Sensing Platforms ◽  
Gap Mode

scholarly journals Relevance of Gap Mode Raman Spectroscopy to Various Substrates

Hyomen Kagaku ◽  
2015 ◽  
Vol 36 (7) ◽  
pp. 363-368
Author(s):  
Maho ISHIKURA ◽  
Hiroki SUZUKI ◽  
Masayuki FUTAMATA
Keyword(s):  
Raman Spectroscopy ◽  
Gap Mode

Plasmonic gap resonances of electrically excited MIS-AgNR hybrid system

2021 ◽  
pp. 127601
Author(s):  
Huining Yuan ◽  
Jin Zhu ◽  
Zaoji Wang ◽  
Weitong Ding ◽  
Kai Sun ◽  
...  
Keyword(s):  
Hybrid System ◽  
Plasmonic Gap
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