Journal
CHINESE PHYSICS B
Volume 29, Issue 11, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1674-1056/aba601
Keywords
surface plasmon resonance; optical fiber; biosensor; glucose
Categories
Funding
- Natural Science Foundation of Jiangsu Province, China [BK20171442]
- China Postdoctoral Science Foundation [2018T110480]
- Open Foundation of State Key Laboratory of Millimeter Waves, China [K202003]
- Open Foundation of State Key Laboratory of Luminescent Materials and Devices, China [2020-skllmd-03]
- Research Center of Optical Communications Engineering & Technology, Jiangsu Province, China [ZXF201904]
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In this paper, we propose a theoretical model of the surface plasmon resonance-based optical fiber biosensor for detecting glucose concentration. The Au/ZnO/WS2 multilayer film is coated around optical fiber. Compared with the conventional surface plasmon resonance sensor, WS2 material can increase the sensitivity of the biosensor. The absorption capacity of WS2 is used to load glucose oxidase by forming a sensitive area to recognize glucose. Refractive index of the solution is calculated and then the concentration of the glucose can be obtained by the correspondence between refractive index and glucose concentration. The highest sensitivity of the SPR biosensor with a structure of 40-nm Au/5-nm ZnO/14 layers of WS2 is 4310 nm/RIU. The proposed WS2-based SPR fiber biosensor has a unique effect on the detection of glucose concentration. It is expected to have potential applications in future medical blood glucose concentration detection.
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