JOURNAL ARTICLE

Numerical design of surface magneto-plasmon sensors of Au/Co double-layer square arrayed nanopores on the continuous gold thin film.

  • Published In: Journal of Applied Physics, 2023, v. 134, n. 2. P. 1 1 of 3

  • Database: Academic Search Ultimate 2 of 3

  • Authored By: Zhang, Chang; Cui, Xiaojian; Zhang, Weiwei; Zhu, Ruixue; Song, Yujun 3 of 3

Abstract

The article focuses on the theoretical design and simulation of a high-performance surface magneto-plasmon (SMP) sensor based on the magneto-optical Kerr effect (MOKE) using films containing square arrays of Au–Co double-layer nanopores on a gold substrate, referred to as the SMP-MOKE sensor. Through finite-element method simulations with COMSOL Multiphysics, the sensor demonstrates enhanced local electric fields and magneto-optical activity under an external magnetic field, achieving a sensitivity of 711 nm per Refractive Index Unit (RIU) and a figure of merit (FOM) exceeding 10^5 RIU^−1, surpassing previous grating-type sensors. The study highlights the combined effects of surface plasmon resonance, Fabry–Pérot interference, and ferromagnetic cobalt's magneto-optical properties, with structural parameters such as nanopore period, diameter, and layer thickness critically influencing sensor performance. These findings provide theoretical guidance for developing ultrasensitive, miniaturized optical sensors suitable for applications like air-quality monitoring and chemical detection.

Additional Information

  • Source:Journal of Applied Physics. 2023/07, Vol. 134, Issue 2, p1
  • Document Type:Article
  • Subject Area:Geology
  • Publication Date:2023
  • ISSN:0021-8979
  • DOI:10.1063/5.0155127
  • Accession Number:164938043
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