生物传感器
材料科学
半最大全宽
钛酸钡
石墨烯
表面等离子共振
棱镜
表面等离子体子
光电子学
灵敏度(控制系统)
图层(电子)
等离子体子
纳米技术
光学
纳米颗粒
电子工程
物理
电介质
工程类
作者
Peng Sun,Mei Wang,Huan Liu,Lipeng Jiao,Wei Du,Feng Xia,Meijie Liu,Weijin Kong,Lifeng Dong,Maojin Yun
标识
DOI:10.1016/j.apsusc.2018.12.283
摘要
A surface plasmon resonance-based biosensor, consisting prism, silver, barium titanate (BaTiO3) and graphene layers, is presented by using angular interrogation. The structure is specially designed to further enhance the sensitivity and to decrease the full width at half maximum (FWHM) thereby improving the sensor performance. Theoretical analysis shows that the highest sensitivity can reach at 257°/RIU where the thickness of Ag layer is 45 nm with 10 nm BaTiO3 and one graphene layer. Compared with existing biosensors, the proposed biosensor exhibits higher sensitivity, lower FWHM and two times better preformation in the quality factor of the sensor, which would make our design have more applications in the field of biosensors.
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