Surface plasmon resonance photonic crystal fiber biosensor based on gold-graphene layers
Surface plasmon resonance photonic crystal fiber biosensor based on gold-graphene layers
复制标题
基于金石墨烯层的表面等离子体共振光子晶体光纤生物传感器
DOI：
10.1016/j.yofte.2019.03.028
复制
发表时间：
2019-07-01
影响因子：
2.7
通讯作者：
Zhang, Xuenan
中科院分区：
文献类型：
--
作者：
Lou, Junbo;Cheng, Tonglei;Zhang, Xuenan
提出了一种新型偏心光子晶体光纤生物传感器，该传感器在光纤的外边缘上具有金和石墨烯双折射层。详细分析了金膜厚度、石墨烯涂层厚度和包层气孔直径对传感器性能的影响。当仅使用镀金膜时，该PCF传感器的最大灵敏度为4657.14 nm/RIU，而在金膜上添加一层石墨烯后，该传感器的灵敏度为8600 nm/RIU，灵敏度提高了84.66%。与传统的光纤传感器相比，这种光子晶体光纤传感器具有结构简单、易于制造和实时检测等优点，将成为水质分析、化学检测和生物分子检测的潜在候选传感器。
A novel eccentric photonic crystal fiber biosensor with gold and graphene bimetallic layers on the outer edge of the optical fiber is proposed in this paper. The effects of gold film thickness, graphene coating thickness and cladding air hole diameter on the sensor performance are analyzed in detail. The maximum sensitivity of this PCF sensor is 4657.14 nm/RIU when only gold-plated film is used, and 8600 nm/RIU after a layer of graphene is added on the gold film, the sensitivity increased by 84.66%. Compared with the traditional optical fiber sensor, this PCF sensor has the advantages of simple structure, easy manufacture and real-time detection, which will make it a potential candidate for water quality analysis, chemical detection and biomolecular detection.