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基于带有聚合物覆盖的多模干扰装置的光纤pH值传感器.

P M Velasco-Bolom, J L Camas-Anzueto, D Lopez-Cortes

    Applied optics
    |September 14, 2023
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    概括
    此摘要是机器生成的。

    这项研究介绍了一种使用多模干扰的新型光纤pH传感器. 化学蚀刻提高了灵敏度,为准确的pH监测提供了快速和线性响应.

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    科学领域:

    • 光电学是指光电子产品.
    • 化学传感器 化学传感器
    • 材料科学 材料科学 材料科学

    背景情况:

    • 精确的pH监测在各种科学和工业应用中至关重要.
    • 现有的pH传感器在响应时间,灵敏度或可重复使用性方面可能面临限制.
    • 光纤传感器提供诸如遥感和对电磁干扰的免疫等优势.

    研究的目的:

    • 开发和描述一个高度敏感的光纤pH传感器.
    • 为了研究结构修改对传感器性能的影响.
    • 为了证明一个快速和线性响应的实际pH值测量.

    主要方法:

    • 一个多模干扰 (MMI) 光纤传感器的制造.
    • 涂覆无核纤维 (NCF) 用聚胺和聚烯酸,使用层层自组装 (LbL) 方法.
    • 化学蚀刻以减少NCF直径并提高灵敏度.

    主要成果:

    • 光纤pH传感器在化学蚀刻后显示灵敏度从-0.31nm/pH增加到-2nm/pH.
    • 在广泛的pH范围 (5至11.3) 中,获得了高线性反应 (R2=0.997).
    • 传感器表现出不到1秒的快速响应时间.

    结论:

    • 开发的光纤pH传感器显示了高性能pH监测的巨大潜力.
    • 化学蚀刻是提高基于NCF的MMI传感器灵敏度的有效方法.
    • 传感器的快速和线性响应使其适用于实时pH检测应用.