Surface plasmon resonance in electrodynamically coupled Au NPs monolayer/dielectric spacer/Al film nanostructure: tuning by variation of spacer thickness

2017 ◽  
Vol 4 (10) ◽  
pp. 106401 ◽  
Author(s):  
Oleg A Yeshchenko ◽  
Viktor V Kozachenko ◽  
Yuriy F Liakhov ◽  
Anastasiya V Tomchuk ◽  
Michael Haftel ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Au Nps ◽  
Dielectric Spacer ◽  
Spacer Thickness

scholarly journals Surface Plasmon Resonance in “Monolayer of Ni Nanoparticles/Dielectric Spacer/Au (Ni) Film” Nanostructure

2018 ◽  
Vol 63 (5) ◽  
pp. 386 ◽  
Author(s):  
O. A. Yeshchenko ◽  
V. V. Kozachenko ◽  
A. V. Tomchuk
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Metal Film ◽  
Spectral Characteristics ◽  
Blue Shift ◽  
Ni Nanoparticles ◽  
Au Film ◽  
Dielectric Spacer ◽  
Spacer Thickness

The dual surface plasmon resonance in Ni nanoparticles in “monolayer of Ni nanoparticles/shellac film/Au (Ni) film” planar nanostructures has been observed in UV-vis absorption spectra. The dependences of the intensity, wavelength, and width of the dual SPR absorption peaks of Ni nanoparticles coupled with an Au (Ni) film on the spacer thickness have been studied in the range of spacer thicknesses of 12–43 nm. The main features of these dependences are an increase of the intensity, the blue shift, and the monotonic behavior of the widths of SPR absorption peaks at a decrease of the spacer thickness. The observed dependences have been rationalized as a result of the plasmonic coupling of the monolayer of Ni nanoparticles withthe metal film and the variation of the dielectric permittivity of the environment of Ni nanoparticles caused by the metal film presence. The stronger dependences of the SPR spectral characteristics of Ni nanoparticles have been observed in the nanostructure containing the gold film comparing to that with a nickel one. Such effect is due to the stronger coupling of Ni nanoparticles with an Au film, and the stronger influence of an Au film on the permittivity of the environment of Ni nanoparticles.

Boosting the Electrochemistry of Li2O2 in Lithium−Oxygen Batteries by Plasmon-induced Hot-Electron Injection

2021 ◽  
Author(s):  
Weixue Yang ◽  
Fei Li ◽  
Huali Liu ◽  
Zhen Li ◽  
Jiaqi Zhao ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Hot Electron ◽  
Au Nps ◽  
Hot Electron Injection ◽  
Lithium Oxygen Batteries

A photo-assisted Li−Oxygen (Li−O2) battery with Au/SnO2 (ASO) hybrid nanotubes as cathode and photocatalyst has been prepared. The localized surface plasmon resonance (LSPR) excitation of gold nanoparticles (Au NPs) can...

The effect of graphene on surface plasmon resonance of metal nanoparticles

2018 ◽  
Vol 20 (38) ◽  
pp. 25078-25084 ◽  
Author(s):  
Haiyan Nan ◽  
Zhirong Chen ◽  
Jie Jiang ◽  
JiaQi Li ◽  
Weiwei Zhao ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Metal Nanoparticles ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Metal Nanoparticle ◽  
Localized Surface Plasmon ◽  
Au Nps ◽  
Hybrid Schemes ◽  
Graphene Layers

Two transparent graphene–metal nanoparticle (NP) hybrid schemes, namely Au NPs covered by graphene layers and Au NPs encapsulated by graphene layers, are presented and the effect of graphene on the localized surface plasmon resonance of metal NPs is systematically investigated.

Initial Study of Thin-Film Derived Gold Nanoparticles (Au NPs) Surface Plasmon Resonance (SPR) Based Prostate-Specific Antigen (PSA) Detection

2020 ◽  
Vol 18 (11) ◽  
pp. 781-784
Author(s):  
M. Dhanunjaya ◽  
T. Sonklin ◽  
Pimchanok Leuasoongnoen ◽  
Sanong Suksaweang ◽  
Pattanaphong Janphuang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Prostate Specific Antigen ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Specific Antigen ◽  
Initial Study ◽  
Peak Position ◽  
Localized Surface Plasmon ◽  
Au Nps

The gold nanoparticles (Au NPs) localized surface plasmon resonance (LSPR) based detection of prostate-specific antigen (PSA) biomarker was carried out in this work. Au NPs on Si and quartz substrates were synthesized by DC magnetron sputtering method followed by conventional annealing protocol. The functionalization of antibody and PSA with Au NPs was evaluated using a simple drop-cost method. The SPR peak intensity was found to be proportional to the PSA concentration. The redshift in SPR peak position might be owing to the change in refractive index around the Au NPs with the conjugation of antibody and further additional binding of specific PSA at different concentrations.

Ellipsometric Advances for Local Surface Plasmon Resonance to Determine Chitosan Adsorption on Layer-By-Layer Gold Nanoparticles

2007 ◽  
Vol 61 (9) ◽  
pp. 1007-1014 ◽  
Author(s):  
Yen Hsun Su ◽  
Lay Gaik Teoh ◽  
Wei Hao Lai ◽  
Shih-Hui Chang ◽  
Hui-Chia Yang ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Polarized Light ◽  
Layer By Layer ◽  
Local Surface ◽  
Local Surface Plasmon Resonance ◽  
Ellipsometric Measurement ◽  
Au Nps

The ellipsometric measurement of local surface plasmon resonance (LSPR) caused by the adsorption of chitosan on layer-by-layer gold nanoparticles (Au NPs) was investigated. Six nanometer (6 nm) Au NPs were prepared and layer-by-layer Au NPs were fabricated to shift the LSPR to 520, 540, and 560 nm, respectively, due to the Mie theory. The thicknesses and the fractions of the layer-by-layer Au NPs were measured accurately using a combination of the Fresnel equation and the Maxwell–Garnett equations for ellipsometry. Furthermore, the position of the LSPR was shifted by chitosan. Using trajectory to record the trace of polarized light for ellipsometry resulting from LSPR, it was found that LSPR is predominantly induced when the LSPR position is close to the wavelength of the ellipsometric measurement. The trajectory circle of LSPR is very large for an increase of chitosan adsorption on Au NPs when the LSPR position is close to the detected wavelength. The linear approximation aspect quantifying the trajectory corresponds with the change of LSPR for the adsorption of chitosan, except for cases with low incidence and Brewster angles. The aspects and technologies of ellipsometry will benefit from the findings in this study, with potential applications in the fields of determination of molecular adsorption.

scholarly journals Laser Nanostructuring for Diffraction Grating Based Surface Plasmon-Resonance Sensors

Nanomaterials ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 591
Author(s):  
Iaroslav Gnilitskyi ◽  
Sergii V. Mamykin ◽  
Christina Lanara ◽  
Ihor Hevko ◽  
Mykhaylo Dusheyko ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Au Nanoparticles ◽  
Polarized Light ◽  
Surface Structures ◽  
Periodic Surface ◽  
Au Nps ◽  
Resonance Properties ◽  
Light Reflectance

The surface plasmon resonance properties of highly regular laser-induced periodic surface structures (HR-LIPSSs) on Si, functionalized with Au nanoparticles (NPs), were investigated. In particular, the spectral dependencies of polarized light reflectance at various angles of incidence were measured and discussed. It is found that the deposition of Au NPs on such periodically textured substrates leads to significant enhancement of the plasmon resonance properties, compared to that measured on planar ones. This effect can be used to improve the efficiency of localized-plasmon-resonance-based sensors.

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