Thermoelectric Polymer Aerogels for Pressure-Temperature Sensing Applications
Thermoelectric Polymer Aerogels for Pressure-Temperature Sensing Applications
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DOI：
10.1002/adfm.201703549
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发表时间：
2017-11-24
影响因子：
19
通讯作者：
Crispin, Xavier
中科院分区：
文献类型：
--
作者：
Han, Shaobo;Jiao, Fei;Crispin, Xavier
社会发展的特点是越来越多的信息从事物流向互联网。传感器已经成为万物互联的基石，因为它们跟踪社会中的各种参数，并将其发送到云端进行分析，预测或学习。由于要感测的参数很多，传感器变得越来越复杂，制造起来也越来越困难。为了降低制造的复杂性，人们可以创造出对多种刺激做出反应的先进功能材料。为此，导电聚合物气凝胶是很有前途的材料，因为它们将弹性与对压力和温度的敏感性联合收割机结合在一起。然而，挑战在于独立读取压力和温度输出信号，而不会产生串扰。在这里，一个战略，以充分解耦的温度和压力阅读的双参数传感器的基础上热电聚合物气凝胶的演示。研究发现，由聚（3，4-乙撑二氧噻吩）：聚（苯乙烯磺酸盐）（PEDOT：PSS）制成的气凝胶在高沸点极性溶剂如二甲基亚砜（DMSO）中可表现出介于绝缘体和半金属之间的半导体性质。重要的是，由于对于DMSO处理的PEDOT基气凝胶观察到的与温度无关的电荷传输，可以实现解耦的压力和温度感测，而在双参数传感器装置中没有串扰。
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.