基于带有聚合物覆盖的多模干扰装置的光纤pH值传感器
Applied optics
|September 14, 2023
概括
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.
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.
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