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.

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.

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

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...

Enhanced surface plasmon resonance with the modified catalytic growth of Au nanoparticles

2007 ◽  
Vol 22 (6) ◽  
pp. 1106-1110 ◽  
Author(s):  
Xiaohai Yang ◽  
Qing Wang ◽  
Kemin Wang ◽  
Weihong Tan ◽  
Huimin Li
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Au Nanoparticles ◽  
Catalytic Growth ◽  
Enhanced Surface

scholarly journals A surface plasmon resonance approach to monitor toxin interactions with an isolated voltage-gated sodium channel paddle motif

2015 ◽  
Vol 145 (2) ◽  
pp. 155-162 ◽  
Author(s):  
Marie-France Martin-Eauclaire ◽  
Géraldine Ferracci ◽  
Frank Bosmans ◽  
Pierre E. Bougis
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Polarized Light ◽  
Voltage Sensor ◽  
Label Free ◽  
Fast Inactivation ◽  
Scorpion Toxins ◽  
Voltage Gated ◽  
Do So

Animal toxins that inhibit voltage-gated sodium (Nav) channel fast inactivation can do so through an interaction with the S3b–S4 helix-turn-helix region, or paddle motif, located in the domain IV voltage sensor. Here, we used surface plasmon resonance (SPR), an optical approach that uses polarized light to measure the refractive index near a sensor surface to which a molecule of interest is attached, to analyze interactions between the isolated domain IV paddle and Nav channel–selective α-scorpion toxins. Our SPR analyses showed that the domain IV paddle can be removed from the Nav channel and immobilized on sensor chips, and suggest that the isolated motif remains susceptible to animal toxins that target the domain IV voltage sensor. As such, our results uncover the inherent pharmacological sensitivities of the isolated domain IV paddle motif, which may be exploited to develop a label-free SPR approach for discovering ligands that target this region.

Dielectric domain distribution on Au nanoparticles revealed by localized surface plasmon resonance

2018 ◽  
Vol 6 (44) ◽  
pp. 12038-12044 ◽  
Author(s):  
Yi Luo ◽  
Yadong Zhou ◽  
Shengli Zou ◽  
Jing Zhao
Keyword(s):  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon Resonance ◽  
Au Nanoparticles ◽  
Extinction Spectrum ◽  
Localized Surface Plasmon ◽  
Uniform Layer

The LSPR of Au nanospheres shows almost no shift in the extinction spectrum with attachment of a silica domain but considerable shift with a uniform layer of silica, indicating LSPR can be used to differentiate the segregated/uniform dielectric distribution.

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