消散波
跟踪(心理语言学)
俘获
光纤
材料科学
光学镊子
光学传感
聚合物
光学
光电子学
纳米技术
物理
复合材料
哲学
生物
语言学
生态学
作者
T. Azargoshasb,H.A. Navid,R. Parvizi,Hadi Heidari
出处
期刊:ACS omega
[American Chemical Society]
日期:2020-08-25
卷期号:5 (35): 22046-22056
被引量:26
标识
DOI:10.1021/acsomega.0c01908
摘要
Graphene sensitization of glucose-imprinted polymer (G-IP)-coated optical fiber has been introduced as a new biosensor for evanescent wave trapping on the polymer optical fiber to detect low-level glucose. The developed sensor operates based on the evanescent wave modulation principle. Full characterization via atomic force microscopy (AFM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, high-resolution transmission electron microscopy (HRTEM), and N2 adsorption/desorption of as-prepared G-IP-coated optical fibers was experimentally tested. Accordingly, related operational parameters such as roughness and diameter were optimized. Incorporating graphene into the G-IP not only steadily promotes the electron transport between the fiber surface and as-proposed G-IP but also significantly enhances the sensitivity by acting as a carrier for immobilizing G-IP with specific imprinted cavities. The sensor demonstrates a fast response time (5 s) and high sensitivity, selectivity, and stability, which cause a wide linear range (10-100 nM) and a low limit of detection (LOD = 2.54 nM). Experimental results indicate that the developed sensor facilitates online monitoring and remote sensing of glucose in biological liquids and food samples.
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