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首页> 美国卫生研究院文献>Sensors (Basel Switzerland) >Reversible NO2 Optical Fiber Chemical Sensor Based on LuPc2 Using Simultaneous Transmission of UV and Visible Light
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Reversible NO2 Optical Fiber Chemical Sensor Based on LuPc2 Using Simultaneous Transmission of UV and Visible Light

机译：基于LuPc2的可逆NO2光纤化学传感器同时传输紫外线和可见光

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摘要

In this paper, an NO2 optical fiber sensor is presented for pollution monitoring in road traffic applications. This sensor exploits the simultaneous transmission of visible light, as a measurement signal, and UV light, for the recovery of the NO2 sensitive materials. The sensor is based on a multimode fiber tip coated with a thin film of lutetium bisphthalocyanine (LuPc2). The simultaneous injection of UV light through the fiber is an improvement on the previously developed NO2 sensors and allows the simplification of the sensor head, rendering the external UV illumination of the film unnecessary. Coatings of different thicknesses were deposited on the optical fiber tips and the best performance was obtained for a 15 nm deposited thickness, with a sensitivity of 5.02 mV/ppm and a resolution of 0.2 ppb in the range 0–5 ppm. The response and recovery times are not dependent on thickness, meaning that NO2 does not diffuse completely in the films.
机译：本文介绍了一种NO2光纤传感器，用于道路交通应用中的污染监测。该传感器利用可见光和紫外光的同时传输来回收对NO2敏感的材料。该传感器基于多模光纤尖端，该尖端涂有双酞菁（LuPc2）薄膜。通过光纤同时注入紫外线是对先前开发的NO2传感器的一种改进，它可以简化传感器头，从而无需对膜进行外部UV照射。将不同厚度的涂层沉积在光纤尖端上，对于15 nm的沉积厚度，可获得最佳性能，其灵敏度为5.02 mV / ppm，分辨率为0.2 ppb，范围为0-5 ppm。响应时间和恢复时间不取决于厚度，这意味着NO2不会在膜中完全扩散。

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