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Optical micro/nanofiber-based localized surface plasmon resonance biosensors: Fiber diameter dependence

swin0826 添加于 2018/11/19 22:03:53  186次阅读 | 0次推荐 | 0个评论

Integration of functional nanomaterials with optical micro/nanofibers (OMNFs) can bring about novel optical properties and provide a versatile platform for various sensing applications. OMNFs as the key element, however, have seldom been investigated. Here, we focus on the optimization of fiber diameter by taking micro/nanofiber-based localized surface plasmon resonance sensors as a model. We systematically study the dependence of fiber diameter on the sensing performance of such sensors. Both theoretical and experimental results show that, by reducing fiber diameter, the refractive index sensitivity can be significantly increased. Then, we demonstrate the biosensing capability of the optimized sensor for streptavidin detection and achieve a detection limit of 1 pg/mL. Furthermore, the proposed theoretical model is applicable to other nanomaterials and OMNF-based sensing schemes for performance optimization.

作 者:Kaiwei Li, Wenchao Zhou, Shuwen Zeng
期刊名称: Sensors
期卷页: 2018/10 第18卷 第10期 3295页
学科领域:化学科学 » 无机化学 » 无机纳米化学
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原文链接:https://www.mdpi.com/1424-8220/18/10/3295
DOI: 10.3390/s18103295
ISBN: 1424-8220
关键词: localized surface plasmon resonance, fiber optic biosensor, optical micro/nanofiber
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