激光还原氧化石墨烯在不同激光功率下的温度传感

2020 IEEE Sensors Pub Date : 2020-10-25 DOI:10.1109/SENSORS47125.2020.9278645

F. J. Romero, Inmaculada Ortiz-Gómez, A. Salinas, D. Morales, N. Rodríguez, A. Rivadeneyra

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引用次数: 1

摘要

将激光还原氧化石墨烯(LrGO)作为温度传感器，研究了其热敏度随激光还原功率的变化规律。为此，在柔性衬底上制作了1平方厘米的lgo正方形。我们发现，对于较低的测试功率(50 mW)，标称电阻(约500 Ω)和温度灵敏度(约-0.41 Ω/°C)都比功率增加10 mW时获得的值高约1.5倍。该传感器还呈现出非常线性的响应(高于0.99)和相对湿度的低变化(5 Ω在RH范围从20%到90%)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Temperature sensing by Laser Reduced Graphene Oxide at different Laser Power Levels

Laser reduced graphene oxide (LrGO) has been considered as temperature sensor and its thermal sensitivity has been studied as a function of the reduction laser power level. To do so, LrGO squares of 1 cm2 on a flexible substrate have been fabricated. We found that for the lower tested power (50 mW), both the nominal resistance (about 500 Ω) and temperature sensitivity (around -0.41 Ω/°C) are about 1.5 times higher than the values obtained with an increase in power of 10 mW. The sensor also presented a very linear response (higher than 0.99) and low variation with relative humidity (5 Ω in the RH range from 20% to 90%).

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2020 IEEE Sensors

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