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14 May 2018 Nanoparticles functionalized long-period fiber grating for sensing applications (Conference Presentation)
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Abstract
Manganese is an important heavy metal element that influences nervous system. Detection of manganese in various mediums has thus attracted lots of attentions. Here we report a study on silver nanoparticles functionalized long-period fiber grating (LPFG) for manganese sensing. Silver nanoparticles (AgNPs) with a size in the range of 70nm10nm were synthesized with polyvinyl pyrrolidone (PVP)-glycol. The interplay between arginine, an agent that can cause aggregation of AgNPs, and Mn2+ leads to refractive index change in the AgNPs colloidal solution, thus a shift in the resonance wavelength of LPFG that is surrounded by the colloidal solution. A sensitivity of 0.2nm shift/10-6M was achieved using such strategy. We believe the integration of nanoparticles with LPFG represents a promising sensing strategy for more advanced applications important for not only environmental but also health science.
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Di Wu, Fan Yang, and Fei Tian "Nanoparticles functionalized long-period fiber grating for sensing applications (Conference Presentation)", Proc. SPIE 10654, Fiber Optic Sensors and Applications XV, 106540K (14 May 2018); https://doi.org/10.1117/12.2305237
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