Gold Nanoparticle Embedded Titanium Dioxide Thin Film for Surface Plasmon Resonance Gas Sensing at Room Temperature

2013 ◽  
Vol 11 (11) ◽  
pp. 2038-2042 ◽  
Author(s):  
Gaige Zheng ◽  
Linhua Xu ◽  
Yu Zhan ◽  
Yigen Wu ◽  
Chengyi Zhang
Keyword(s):  
Thin Film ◽  
Titanium Dioxide ◽  
Surface Plasmon Resonance ◽  
Gold Nanoparticle ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Room Temperature ◽  
Gas Sensing

ROOM-TEMPERATURE NITRIC OXIDE GAS SENSING OF PEDOT THIN FILM USING SURFACE PLASMON RESONANCE

2009 ◽  
Vol 21 (06) ◽  
pp. 395-398 ◽  
Author(s):  
Tsing-Hau Wu ◽  
Hui-Hsin Lu ◽  
Wei-Yi Feng ◽  
Chii-Wann Lin ◽  
Chia-Yu Lin ◽  
...  
Keyword(s):  
Thin Film ◽  
Nitric Oxide ◽  
Surface Plasmon Resonance ◽  
Detection Limit ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Electrochemical Synthesis ◽  
Room Temperature ◽  
Gas Sensing ◽  
Optimal Thickness

A room-temperature nitric oxide ( NO ) gas sensor is prepared by using electrochemical synthesis of conducting polymer, poly-(3,4-ethylene dioxythiophene) (PEDOT) and characterized by surface plasmon resonance (SPR) method. Guided by SPR angle simulation, the optimal thickness of deposited PEDOT thin film is 25 nm and the resultant lowest detection limit of NO is 8 ppm. It exhibits 1.3 times higher responses to 25 ppm of NO gas than NO 2.

scholarly journals CH3NH3PbBr3 Thin Film Served as Guided-Wave Layer for Enhancing the Angular Sensitivity of Plasmon Biosensor

Biosensors ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 415
Author(s):  
Leiming Wu ◽  
Yuanjiang Xiang ◽  
Yuwen Qin
Keyword(s):  
Thin Film ◽  
Surface Plasmon Resonance ◽  
Gas Sensor ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Gas Sensing ◽  
Hybrid Structure ◽  
Guided Wave ◽  
Angular Sensitivity ◽  
Liquid Sensing

CH3NH3PbBr3 perovskite thin film is used as a guided-wave layer and coated on the surface of an Au film to form the Au-perovskite hybrid structure. Using the hybrid structure, a perovskite-based guided-wave surface plasmon resonance (GWSPR) biosensor is proposed with high angular sensitivity. First, it is found that the electric field at the sensing interface is improved by the CH3NH3PbBr3 perovskite thin film, thereby enhancing the sensitivity. The result demonstrates that the angular sensitivity of the Au-perovskite-based GWSPR biosensor is as high as 278.5°/RIU, which is 110.2% higher than that of a conventional Au-based surface plasmon resonance (SPR) biosensor. Second, the selection of the coupling prism in the configuration of the GWSPR biosensor is also analyzed, and it indicates that a low refractive index (RI) prism can generate greater sensitivity. Therefore, the low-RI BK7 prism is served as the coupling prism for the proposed GWSPR biosensor. Finally, the proposed GWSPR sensing structure can not only be used for liquid sensing, but also for gas sensing, and it has also been demonstrated that the GWSPR gas sensor is 2.8 times more sensitive than the Au-based SPR gas sensor.

scholarly journals Cellulose and Vanadium Plasmonic Sensor to Measure Ni2+ Ions

2021 ◽  
Vol 11 (7) ◽  
pp. 2963
Author(s):  
Nur Alia Sheh Omar ◽  
Yap Wing Fen ◽  
Irmawati Ramli ◽  
Umi Zulaikha Mohd Azmi ◽  
Hazwani Suhaila Hashim ◽  
...  
Keyword(s):  
Thin Film ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Signal To Noise Ratio ◽  
Affinity Constant ◽  
Detection Accuracy ◽  
Plasmonic Sensor ◽  
Spr Sensor ◽  
Resonance Sensor

A novel vanadium–cellulose composite thin film-based on angular interrogation surface plasmon resonance (SPR) sensor for ppb-level detection of Ni(II) ion was developed. Experimental results show that the sensor has a linear response to the Ni(II) ion concentrations in the range of 2–50 ppb with a determination coefficient (R2) of 0.9910. This SPR sensor can attain a maximum sensitivity (0.068° ppb−1), binding affinity constant (1.819 × 106 M−1), detection accuracy (0.3034 degree−1), and signal-to-noise-ratio (0.0276) for Ni(II) ion detection. The optical properties of thin-film targeting Ni(II) ions in different concentrations were obtained by fitting the SPR reflectance curves using the WinSpall program. All in all, the proposed Au/MPA/V–CNCs–CTA thin-film-based surface plasmon resonance sensor exhibits better sensing performance than the previous film-based sensor and demonstrates a wide and promising technology candidate for environmental monitoring applications in the future.

scholarly journals Correction: Investigation of plasmonic signal enhancement based on long range surface plasmon resonance with gold nanoparticle tags

2016 ◽  
Vol 4 (44) ◽  
pp. 10562-10562
Author(s):  
Chih-Tsung Yang ◽  
Lin Wu ◽  
Ping Bai ◽  
Benjamin Thierry
Keyword(s):  
Surface Plasmon Resonance ◽  
Gold Nanoparticle ◽  
Long Range ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Signal Enhancement

Correction for ‘Investigation of plasmonic signal enhancement based on long range surface plasmon resonance with gold nanoparticle tags’ by Chih-Tsung Yang et al., J. Mater. Chem. C, 2016, 4, 9897–9904.

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