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首页> 外文期刊>Optics Letters >Hypersensitive H-2 sensor based on polymer planar Bragg gratings coated with Pt-loaded WO3-SiO2
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Hypersensitive H-2 sensor based on polymer planar Bragg gratings coated with Pt-loaded WO3-SiO2

机译:基于聚合物平面布拉格光栅的超敏H-2传感器涂有PT加载的WO3-SiO2

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This Letter demonstrates a novel, to the best of our knowledge, hydrogen sensor based on a polymer planar Bragg grating coated with Pt-loaded WO3-SiO2. The reflected. Bragg signal shows a distinct peak splitting correlated. to substrate anisotropies originating from the injection molding process. Especially at low H-2 concentrations, both sensing peaks exhibit an outstanding response to the heat generated by the exothermic reaction between hydrogen molecules and coating. Thereby, a hydrogen volume ratio of 50 ppm leads to a Bragg wavelength shift of -37 pm, which yields an outstandingly low detection limit of only 5 ppm H-2 in air. Thus, functionalized polymer planar Bragg gratings are eminently suitable for H-2 leak detection applications. (C) 2020 Optical Society of America
机译:这封信展示了一种新颖的,据我们所知,氢传感器基于涂有Pt负载的WO3-SiO 2的聚合物平面布拉格光栅。 反射。 布拉格信号显示了不同的峰值分割相关。 源自注塑方法的底物各向异性。 特别是在低H-2浓度下,感测峰都表现出对氢分子与涂布之间的放热反应产生的热量的突出响应。 由此,50ppm的氢体积比导致-37μm的布拉格波长偏移,其在空气中产生突出的低检测极限为5ppm H-2。 因此,官能化的聚合物平面布拉格光栅可致光学适用于H-2泄漏检测应用。 (c)2020美国光学学会

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