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<p>In this study, a one-dimensional photonic crystal sensor based on an alternating arrangement of silica and zinc selenide is theoretically proposed. The defect-mode resonance is excited by introducing the analyte as a defect layer within the photonic crystal structure. Simulations were performed using the transfer matrix method and MATLAB software, demonstrating the sensor’s capability for efficient and effective measurement of DMF solution concentration. The effects of defect layer thickness and position, number of photonic crystal periods, and angle of incidence on sensor performance were systematically investigated. Simulation results indicate that the maximum sensitivity of the sensor reaches 530&#xa0;nm/RIU, with a quality factor of up to 19,100.</p>

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Research on concentration sensing of dimethylformamide solution based on one-dimensional photonic crystal

  • 期刊论文

  • 发表日期：

    2025年7月22日

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  • Qingsong Jian,
  • Jianwei Wu

摘要

In this study, a one-dimensional photonic crystal sensor based on an alternating arrangement of silica and zinc selenide is theoretically proposed. The defect-mode resonance is excited by introducing the analyte as a defect layer within the photonic crystal structure. Simulations were performed using the transfer matrix method and MATLAB software, demonstrating the sensor’s capability for efficient and effective measurement of DMF solution concentration. The effects of defect layer thickness and position, number of photonic crystal periods, and angle of incidence on sensor performance were systematically investigated. Simulation results indicate that the maximum sensitivity of the sensor reaches 530 nm/RIU, with a quality factor of up to 19,100.