Salunkhe Tejaswi Tanaji, Lee Dong Jun, Lee Ho Kyung, Choi Hyung Wook, Park Sang Joon, Kim Il Tae
Department of Chemical and Biological Engineering, Gachon University, Seongnam-si, Gyeonggi-do, 13120, Korea.
Department of Electrical Engineering, Gachon University, Seongnam-si, Gyeonggi-do,13120, Korea.
Sensors (Basel). 2020 Jan 31;20(3):794. doi: 10.3390/s20030794.
The exploration of novel polymers for temperature sensing with high sensitivity has attracted tremendous research interest. Hence, we report a polystyrene-coated optical fiber temperature sensor with high sensitivity. To enhance the temperature sensitivity, flat, thin, smooth, and air bubble-free polystyrene was coated on the edge surface of a single-mode optical fiber, where the coating thickness was varied based on the solution concentration. Three thicknesses of the polystyrene layer were obtained as 2.0, 4.1, and 8.0 μm. The temperature sensor with 2.0 μm thick polystyrene exhibited the highest temperature sensitivity of 439.89 pm °C in the temperature range of 25-100 °C. This could be attributed to the very uniform and thin coating of polystyrene, along with the reasonable coefficient of thermal expansion and thermo-optic coefficient of polystyrene. Overall, the experimental results proved the effectiveness of the proposed polystyrene-coated temperature sensor for accurate temperature measurement.
对具有高灵敏度的新型温度传感聚合物的探索引起了巨大的研究兴趣。因此，我们报道了一种具有高灵敏度的聚苯乙烯涂层光纤温度传感器。为了提高温度灵敏度，在单模光纤的边缘表面涂覆了平坦、薄、光滑且无气泡的聚苯乙烯，其中涂层厚度根据溶液浓度而变化。获得了三种厚度的聚苯乙烯层，分别为2.0、4.1和8.0μm。在25-100°C的温度范围内，聚苯乙烯厚度为2.0μm的温度传感器表现出最高的温度灵敏度，为439.89pm/°C。这可归因于聚苯乙烯非常均匀且薄的涂层，以及聚苯乙烯合理的热膨胀系数和热光系数。总体而言，实验结果证明了所提出的聚苯乙烯涂层温度传感器用于精确温度测量的有效性。
