A waterproof and breathable Cotton/rGO/CNT composite for constructing a layer-by-layer structured multifunctional flexible sensor  

作　　者：Feifei Yin Yunjian Guo Hao Li Wenjing Yue Chunwei Zhang Duo Chen Wei Geng Yang Li Song Gao Guozhen Shen 

机构地区：[1]School of Information Science and Engineering,University of Jinan,Jinan 250022,China [2]School of Integrated Circuits and Electronics,Beijing Institute of Technology,Beijing 100081,China [3]International School for Optoelectronic Engineering,Qilu University of Technology(Shandong Academy of Science),Jinan 250353,China [4]Shandong Provincial Maternal and Child Health Care Hospital,Jinan 250022,China

出　　处：《Nano Research》2022年第10期9341-9351,共11页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.62174068,61805101,62005095,61888102,and 62104080);Shandong Provincial Natural Science Foundation of China(Nos.ZR2019BF013 and ZR2020QF105);Rizhao City Key Research and Development Program under Grant(No.2021ZDYF010102).

摘　　要：Developing a cotton fabric sensing layer with good waterproofness and breathability via a low-cost and eco-friendly method is increasingly important for the construction of comfortable and wearable electronic devices.Herein,a waterproof and breathable cotton fabric composite decorated by reduced graphene oxide(rGO)and carbon nanotube(CNT),Cotton/rGO/CNT,is reported by a facile solution infiltration method,and we adopt such Cotton/rGO/CNT composite to develop a layer-by-layer structured multifunctional flexible sensor,enabling the high-sensitivity detection of pressure and temperature stimulus.Particularly,the multifunctional flexible sensor exhibits a high response toward tiny pressure,demonstrating salient superiority in the continuous and reliable monitoring of human physiological information.Concerning temperature sensing,a good linear response for the temperatures ranging from 28 to 40℃ is achieved by the multifunctional flexible sensor and gives rise to be successfully applied to the non-contact real-time monitoring of human respiration signal.Finally,an array consisting of multifunctional flexible sensors further demonstrates its feasibility in perceiving and mapping the pressure and temperature information of contact objects.This work provides a feasible strategy for designing cotton-based sensing layers that can effectively resist liquid water penetration and allow water vapor transmission,and offers reasonable insight for constructing comfort and multifunctional wearable electronics.

关 键 词：WATERPROOF breathable multifunctional flexible sensor pressure sensing temperature sensing 

分 类 号：TB33[一般工业技术—材料科学与工程] TP212[自动化与计算机技术—检测技术与自动化装置]