基于优化纸/Cu/Al2O3和石墨烯/PVDF复合传感层的柔性温度传感器

IF 4.1 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2025-04-29 DOI:10.1016/j.sna.2025.116653

Pengfei Zhao, Jijun Ding, Haixia Chen, Haiwei Fu

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引用次数: 0

摘要

可穿戴设备由于其灵活性和便携性，在人体健康检测和人机交互领域具有很大的发展潜力。本文首先通过改变Al2O3溅射时间，优化纸/Cu/Al2O3对温度的电阻响应性能。结合一个月后的电阻变化和稳定性，选择Al2O3层数为1 min的paper/Cu/Al2O3薄膜。然后，基于优化后的纸/Cu/Al2O3和石墨烯/PVDF复合温敏层制备了温度传感器。该传感器具有负温度系数、高温度响应和稳定性等特点，在温度监测领域具有显著优势。传感器的最快响应/恢复时间分别为1.4 s和10.48 s，能够快速可靠地捕捉温度变化，具有实时温度监测的能力。该传感器的另一个突出特点是对温度波动的线性度高（R2 =0.947）。该特性表明该传感器能够实时电阻-温度相互作用。此外，还将探讨其实际应用。该传感器可以快速感知手指、热水和正在工作的手机的温度。同时，传感器的优异性能使其能够实现照亮LED的功能。为温度传感器在柔性可穿戴设备中的应用奠定了基础。

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Flexible temperature sensors based on optimized paper/Cu/Al2O3 and graphene/PVDF composite sensing layers

Wearable devices have great potential for development in the fields of human health detection and human-computer interaction due to its flexibility and portability. In this work, Firstly, the resistance response performance of paper/Cu/Al₂O₃ to temperature is optimized by changing the sputtering time of Al₂O₃. Combining the resistance change and stability after one month, paper/Cu/Al₂O₃ films with 1 min Al₂O₃ layer is selected. Then, temperature sensor based on optimized paper/Cu/Al₂O₃ and graphene/PVDF composite temperature-sensitive layers is fabricated. The sensor shows negative temperature coefficient, high temperature response and stability, which provides significant advantages in the field of temperature monitoring. The fastest response/recovery time of the sensor is 1.4 s and 10.48 s respectively, which is fast and reliable in capturing the temperature changes and thus has the capability of real-time temperature monitoring. Another outstanding feature of the sensor is its high linearity to temperature fluctuations (R² =0.947). This feature suggests that the sensor enables real-time resistance-temperature interaction. In addition, its practical applications will be explored. The sensor can quickly sense the temperature of fingers, hot water, and working mobile phones. At the same time, the excellent performance of the sensor enables it to achieve the function of illuminating the LED. It lays the foundation for the application of temperature sensors in flexible wearable device applications.

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...