Graphene Enhances the Sensitivity of Fiber-Optic Surface Plasmon Resonance Biosensor
Graphene Enhances the Sensitivity of Fiber-Optic Surface Plasmon Resonance Biosensor
复制标题
石墨烯增强光纤表面等离子共振生物传感器的灵敏度
DOI：
10.1109/jsen.2015.2442276
复制
发表时间：
2015-10-01
影响因子：
4.3
通讯作者：
Weng, Jian
中科院分区：
文献类型：
--
作者：
Fu, Hongyan;Zhang, Shiwei;Weng, Jian
本文提出了一种光纤表面等离子体共振（SPR）生物传感器，在该传感器中，石墨烯片作为传感层涂覆在金膜周围。采用四层模型对所提出的光纤生物传感器进行了理论研究，结果表明，通过引入石墨烯敏感层，所提出的SPR光纤生物传感器的灵敏度比传统的金膜SPR光纤传感器有了很大的提高。研究了基于石墨烯传感层的SPR光纤生物传感器的共振波长和灵敏度与传感层层数的关系。
In this paper, a fiber-optic surface plasmon resonance (SPR) biosensor is presented, in which a sheet of graphene acting as a sensing layer is coated around the gold film. A theoretical study of the proposed fiber-optic biosensor has been carried out by applying four-layer modal, which shows that by incorporating a graphene sensing layer, the sensitivity of the proposed SPR fiber biosensor can be greatly enhanced than the conventional gold film SPR fiber sensors. The relationship between resonance wavelengths and sensitivity of the proposed graphene sensing layer-based SPR fiber biosensor with the number of sensing layer has also been studied.