Development of local surface plasmon resonance sensor using gold nanoparticles

2019 ◽  
Author(s):  
Marianna Beiderman ◽  
Menachem Motiei ◽  
Rachela Popovtzer ◽  
Dror Fixler
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Surface Plasmon Resonance Sensor ◽  
Local Surface ◽  
Local Surface Plasmon Resonance ◽  
Resonance Sensor

scholarly journals Nanocrystalline TiO2 Sensitive Layer for Plasmonic Hydrogen Sensing

Nanomaterials ◽  
2020 ◽  
Vol 10 (8) ◽  
pp. 1490
Author(s):  
Enrico Gazzola ◽  
Michela Cittadini ◽  
Marco Angiola ◽  
Laura Brigo ◽  
Massimo Guglielmi ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Localized Surface Plasmon ◽  
Surface Plasmon Resonance Sensor ◽  
Sensitive Layer ◽  
Plasmonic Sensor ◽  
Nanocrystalline Tio2 ◽  
Resonance Sensor

Solution processed TiO2 anatase film was used as sensitive layer for H2 detection for two plasmonic sensor configurations: A grating-coupled surface plasmon resonance sensor and a localized surface plasmon resonance sensor with gold nanoparticles. The main purpose of this paper is to elucidate the different H2 response observed for the two types of sensors which can be explained considering the hydrogen dissociation taking place on TiO2 at high temperature and the photocatalytic activity of the gold nanoparticles.

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.

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