摘要
基于磁流体的光学特性,提出一种自参考塔姆等离子体激元混合模磁场传感器。该传感结构由两个金属-分布式布拉格反射器结构和嵌于二者之间的用于感应外磁场的磁流体层构成。研究表明,该传感结构可激发两个塔姆等离子体激元。在一定的结构参数下,其中一个基本不随外磁场的改变而发生变化,而另一个对外磁场非常敏感。数值结果表明,该传感结构的探测灵敏度要优于已报道的采用单层磁流体作为传感层的光子晶体磁场传感器。研究结果为磁流体磁场传感器的设计制备提供了参考。
A self-referenced hybrid Tamm-plasmon-polariton(TPP)mode magnetic field sensor based on the optical properties of magnetic fluid is proposed.The sensing architecture is comprised of dual metal-Distributed-Bragg-Reflector(DBR)based structure which sandwiches a common magnetic fluid layer acting as a magnetic field sensing medium.The results show that the sensing structure can excite two TPP modes.Under certain structural parameters,one of the TPP modes basically does not change with the external magnetic field,while the other is very sensitive to the external magnetic field.The numerical results also show that the detection sensitivity of the proposed sensing structure is better than that of the reported magnetic field sensor realized by photonic crystal defect structure.The research results provide a reference for the design and fabrication of magnetic fluid magnetic field sensors.
出处
《科技创新与应用》
2021年第1期56-58,共3页
Technology Innovation and Application
基金
国家级大学生创新创业训练计划项目(编号:201910433001,201910433012)
淄博市校城融合发展计划项目(编号:2018ZBXC052)。
关键词
等离子学
磁流体
磁场传感
传输矩阵法
plasmonics
magnetic fluid
magnetic field sensors
transfer matrix method