Afzal Usama, Aslam Muhammad, Afzal Fatima, Maryam Kanza, Ahmad Naveed, Zafar Qayyum, Farooq Zahid
Visiting Lecturer, Faculty of Science, Gift College Hafizabad 52110 Pakistan
Department of Physics, University of Education Township Campus Lahore 54000 Pakistan
RSC Adv. 2022 Aug 2;12(33):21297-21308. doi: 10.1039/d2ra03474c. eCollection 2022 Jul 21.
Graphene is a 2D material with remarkable properties. The present study demonstrates the fabrication of a graphene-based sensor for measuring the temperature and humidity of a metal body. The graphene sensor was fabricated by depositing a thin film of graphene nanoparticles between silver electrodes (separated by ∼50 μm) on a glass substrate. The graphene thin film was characterized by XRD, Raman spectroscopy and UV-vis techniques. The capacitance and resistance for both the relative humidity (in the range of 0-100% RH) and temperature (in the range of 230-310 K) were measured using an LCR meter at 1 kHz in a controlled chamber. The graphene-based sensor expressed high sensitivity with fast response and recovery times for both humidity and temperature with long stability and low hysteresis curves. The sensor was also tested on a metal body, which expressed a good response time. Moreover, the measured data of capacitance and resistance was analyzed with classical and neutrosophic analysis as an application of modern material statistics. It was observed that neutrosophic analysis is more flexible for analyzing the capacitance and resistance of the fabricated sensor.
石墨烯是一种具有卓越性能的二维材料。本研究展示了一种用于测量金属体温度和湿度的基于石墨烯的传感器的制造。该石墨烯传感器是通过在玻璃基板上的银电极(间距约50μm)之间沉积一层石墨烯纳米颗粒薄膜制成的。用X射线衍射、拉曼光谱和紫外可见技术对石墨烯薄膜进行了表征。在一个受控腔室内,使用LCR测量仪在1kHz频率下测量了相对湿度(0 - 100%RH范围)和温度(230 - 310K范围)下的电容和电阻。基于石墨烯的传感器对湿度和温度均表现出高灵敏度、快速响应和恢复时间、长稳定性以及低滞后曲线。该传感器还在金属体上进行了测试,表现出良好的响应时间。此外,作为现代材料统计的应用,用经典分析和中智分析对测量的电容和电阻数据进行了分析。结果发现,中智分析在分析所制造传感器的电容和电阻方面更具灵活性。