Modification of a Thin Gold Film with Boronic Acid Membrane and Its Application to a Saccharide Sensor Based on Surface Plasmon Resonance

2003 ◽  
Vol 15 (1516) ◽  
pp. 1281-1290 ◽  
Author(s):  
Nobuaki Soh ◽  
Makoto Sonezaki ◽  
Toshihiko Imato
2016 ◽  
Vol 14 (4) ◽  
pp. 042401-42403 ◽  
Author(s):  
Zhitao Yang Zhitao Yang ◽  
Changjian Liu Changjian Liu ◽  
Yachen Gao Yachen Gao ◽  
Jiyu Wang Jiyu Wang ◽  
and Wenlong Yang and Wenlong Yang

2019 ◽  
Vol 9 (7) ◽  
pp. 1480 ◽  
Author(s):  
Zhenlin Chen ◽  
Kunlin Han ◽  
Ya-Nan Zhang

This paper proposes a reflective fiber mercury ion sensor based on the surface plasmon resonance (SPR) principle and chitosan (CS)/polyacrylic acid (PAA) multilayer sensitive film. By optimizing the coating parameters of the gold film, the refractive index (RI) sensitivity of the reflective SPR sensor is demonstrated to be 2110.33 nm/RIU. Then, a multi-layer CS/PAA film is fixed on the surface of the gold film as a mercury ion sensitive film to form a reflective SPR fiber mercury ion sensor. Experimental results demonstrate that the sensor can be used to detect different concentrations of mercury ions with a high sensitivity of 0.5586 nm/μM and good specificity and repeatability. Therefore, the reflective SPR fiber mercury ion sensor shows great promise for future applications of environmental monitoring and drinking water safety.


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