Highly sensitive fiber optic biosensors with graphene-MoS heterostructure for hemoglobin detection
Optics Continuum, ISSN: 2770-0208, Vol: 1, Issue: 6, Page: 1392-1400
2022
- 2Citations
- 3Captures
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Article Description
Two-dimensional materials, which can be used to modify sensor surfaces to increase sensor sensitivity, have important research in the field of sensors. In this paper, we design a highly sensitive D-shaped photonic crystal fiber sensor with graphene-MoS heterostructure for hemoglobin detection. The research utilized the finite element method and involved addition of different layers of graphene and MoS to the optical fiber sensing area, and it was determined that the hybrid nano-heterostructures made of monolayer graphene and bilayer MoS provided the greatest improvement in sensor performance. The sensor shows excellent detection performance in 1.33∼1.38 refractive index units. Using incident light in the wavelength ranges of 650 nm and 850 nm, the proposed sensor has a maximum wavelength sensitivity of 4700 nm/RIU, a maximum amplitude sensitivity of 327.5 RIU, and a resolution of 2.17×10 RIU. The range of hemoglobin concentrations detected with this sensor was 0 g/L∼241 g/L, with an average sensitivity of 0.7 nm/(g/L). A fiber biosensor was enhanced with graphene-MoS hybrid nanostructures, which exhibit excellent photoelectric properties and detection performance, enabling highly sensitive, highly accurate, and real-time hemoglobin detection. The result shows the significant research value and application prospects in the field of biomedical detection.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85168849935&origin=inward; http://dx.doi.org/10.1364/optcon.459188; https://opg.optica.org/abstract.cfm?URI=optcon-1-6-1392; https://dx.doi.org/10.1364/optcon.459188; https://opg.optica.org/optcon/fulltext.cfm?uri=optcon-1-6-1392&id=476859
Optica Publishing Group
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