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Thermoelectric Polymer Aerogels for Pressure-Temperature Sensing Applications

机译:用于压力温度传感应用的热电聚合物气凝胶

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摘要

The evolution of the society is characterized by an increasing flow of information from things to the internet. Sensors have become the cornerstone of the internet-of-everything as they track various parameters in the society and send them to the cloud for analysis, forecast, or learning. With the many parameters to sense, sensors are becoming complex and difficult to manufacture. To reduce the complexity of manufacturing, one can instead create advanced functional materials that react to multiple stimuli. To this end, conducting polymer aerogels are promising materials as they combine elasticity and sensitivity to pressure and temperature. However, the challenge is to read independently pressure and temperature output signals without cross-talk. Here, a strategy to fully decouple temperature and pressure reading in a dual-parameter sensor based on thermoelectric polymer aerogels is demonstrated. It is found that aerogels made of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) can display properties of semiconductors lying at the transition between insulator and semimetal upon exposure to high boiling point polar solvents, such as dimethylsulfoxide (DMSO). Importantly, because of the temperature-independent charge transport observed for DMSO-treated PEDOT-based aerogel, a decoupled pressure and temperature sensing can be achieved without cross-talk in the dual-parameter sensor devices.
机译:社会的发展以从事物到互联网的信息流不断增加为特征。传感器追踪社会中的各种参数并将其发送到云中进行分析,预测或学习,因此已成为一切物联网的基石。由于要检测的参数很多,传感器变得复杂且难以制造。为了降低制造的复杂性,可以创建对多种刺激有反应的高级功能材料。为此,导电聚合物气凝胶是有前途的材料,因为它们结合了弹性以及对压力和温度的敏感性。但是,挑战在于如何独立读取压力和温度输出信号而不会产生串扰。在这里,展示了一种基于热电聚合物气凝胶的双参数传感器中的温度和压力读数完全解耦的策略。发现由聚(3,4-乙撑二氧噻吩):聚(苯乙烯磺酸盐)(PEDOT:PSS)制成的气凝胶在暴露于高沸点极性溶剂(例如:二甲基亚砜(DMSO)。重要的是,由于在DMSO处理的基于PEDOT的气凝胶中观察到与温度无关的电荷传输,因此可以在双参数传感器设备中实现无压力的温度和压力分离。

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  • 来源
    《Advanced Functional Materials》 |2017年第44期|1703549.1-1703549.7|共7页
  • 作者单位

    Linkoping Univ, Dept Sci & Technol, Lab Organ Elect, S-60174 Norrkoping, Sweden;

    Linkoping Univ, Dept Sci & Technol, Lab Organ Elect, S-60174 Norrkoping, Sweden;

    Linkoping Univ, Dept Sci & Technol, Lab Organ Elect, S-60174 Norrkoping, Sweden;

    Linkoping Univ, Dept Sci & Technol, Lab Organ Elect, S-60174 Norrkoping, Sweden;

    Linkoping Univ, Dept Sci & Technol, Lab Organ Elect, S-60174 Norrkoping, Sweden;

    Linkoping Univ, Dept Sci & Technol, Lab Organ Elect, S-60174 Norrkoping, Sweden;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    aerogels; nanofibrillated cellulose; PEDOT; sensors; thermoelectrics;

    机译:气凝胶;纳米纤维化纤维素;PEDOT;传感器;热电学;

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