Zhang Weiwei, Du Guoqiang, Chen Hongming, An Kang
School of Mathematics and Physics, Hebei GEO University, 136 East Huai'an Road, Yuhua District, Shijiazhuang 050031, China.
Hebei Key Laboratory of Optoelectronic Information and Geo-detection Technology, Hebei GEO University, 136 East Huai'an Road, Yuhua District, Shijiazhuang 050031, China.
Phys Chem Chem Phys. 2023 Apr 5;25(14):9796-9799. doi: 10.1039/d3cp00460k.
Enhancement of transverse magneto-optical Kerr effects (T-MOKEs) based on surface plasmon resonance has attracted wide attention because of their high sensing performance. Most studies, however, mainly focus on prism-based magnetoplasmonic structures or architectures that incorporate a noble metal lattice and ferromagnetic layer, hindering device fabrication, miniaturization, and integration into a microfluidic sensing configuration. Herein, we propose a single CoAg ferromagnetic-metal layer perforated with a square nanopore array system with a pronounced T-MOKE magnitude 51 times higher than that of a smooth film, and with potential to detect gaseous analytes. The proposed system is sufficient to detect gaseous media for early environmental monitoring and enables an accessible pathway for magneto-optical sensor design.
基于表面等离子体共振增强的横向磁光克尔效应（T-MOKE）因其高传感性能而备受关注。然而，大多数研究主要集中在基于棱镜的磁等离子体结构或包含贵金属晶格和铁磁层的结构上，这阻碍了器件的制造、小型化以及集成到微流体传感配置中。在此，我们提出了一种带有方形纳米孔阵列系统的单一CoAg铁磁金属层，其T-MOKE幅度比光滑薄膜高51倍，具有检测气态分析物的潜力。所提出的系统足以检测气态介质以进行早期环境监测，并为磁光传感器设计提供了一条可行的途径。
