材料科学
碳纳米管
电子线路
稳健性(进化)
共形矩阵
压阻效应
光电子学
温度测量
晶体管
纳米技术
电子工程
计算机科学
复合材料
电气工程
工程类
物理
电压
化学
基因
量子力学
生物化学
作者
Chenxin Zhu,Alex Chortos,Yue Wang,Raphael Pfattner,Ting Lei,Allison C. Hinckley,Igor Pochorovski,Xuzhou Yan,John W. F. To,Jin Young Oh,Jeffrey B.‐H. Tok,Zhenan Bao,Boris Murmann
标识
DOI:10.1038/s41928-018-0041-0
摘要
For the next generation of wearable health monitors, it is essential to develop stretchable and conformable sensors with robust electrical performance. These sensors should, in particular, provide a stable electrical output without being affected by external variables such as induced strain. Here, we report circuit design strategies that can improve the accuracy and robustness of a temperature sensor based on stretchable carbon nanotube transistors. Using static and dynamic differential readout approaches, our circuits suppress strain-dependent errors and achieve a measured inaccuracy of only ±1 oC within a uniaxial strain range of 0–60%. We address device variability by using a one-time, single-point calibration approach. In contrast with previous approaches, which infer temperature change through a normalized measurement at two temperatures, our prototype devices provide an absolute output without temperature cycling. This is essential for practical deployment because heating and cooling the sensor is prohibitively slow and costly during real-time operation and production testing. Using carbon nanotube transistors, stretchable temperature sensor circuits can be designed that suppress strain-dependent errors and achieve a measured inaccuracy of only ±1 °C within a uniaxial strain range of 0–60%
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