Optimization and Application of Reflective LSPR Optical Fiber Biosensors Based on Silver NanoparticlesReport as inadecuate




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State Key Laboratory of Chemical Engineering, Tianjin Key Laboratory of Membrane Science and Desalination Technology, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

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Collaborative Innovation Center of Chemical Science and Engineering Tianjin, Tianjin 300072, China

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School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China





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Authors to whom correspondence should be addressed.



Academic Editor: W. Rudolf Seitz

Abstract In this study, we developed a reflective localized surface plasmon resonance LSPR optical fiber sensor, based on silver nanoparticles Ag NPs. To enhance the sensitivity of the LSPR optical sensor, two key parameters were optimized, the length of the sensing area and the coating time of the Ag NPs. A sensing length of 1.5 cm and a 1-h coating time proved to be suitable conditions to produce highly sensitive sensors for biosensing. The optimized sensor has a high refractive index sensitivity of 387 nm-RIU, which is much higher than that of other reported individual silver nanoparticles in solutions. Moreover, the sensor was further modified with antigen to act as a biosensor. Distinctive wavelength shifts were found after each surface modification step. In addition, the reflective LSPR optical fiber sensor has high reproducibility and stability. View Full-Text

Keywords: localized surface plasmon resonance; optical fiber; silver nanoparticles; biosensors localized surface plasmon resonance; optical fiber; silver nanoparticles; biosensors





Author: Jiangping Chen 1, Se Shi 1, Rongxin Su 1,2,* , Wei Qi 1,2,* , Renliang Huang 3, Mengfan Wang 1, Libing Wang 1 and Zhimin He 1

Source: http://mdpi.com/



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