Ultrafast Response Polyelectrolyte Humidity Sensor for Respiration Monitoring

被引：225

作者：

Dai, Jianxun ^{[1
]}

Zhao, Hongran ^{[1
]}

Lin, Xiuzhu ^{[1
]}

Liu, Sen ^{[1
]}

Liu, Yunshi ^{[1
]}

Liu, Xiupeng ^{[1
]}

Fei, Teng ^{[1
,2
]}

Zhang, Tong ^{[1
]}

机构：

[1] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, Changchun 130012, Jilin, Peoples R China

[2] State Key Lab Transducer Technol, Shanghai 200050, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2019年 / 11卷 / 06期

基金：

中国国家自然科学基金;

关键词：

polyelectrolyte humidity sensors; in situ preparation; click reaction; ultrafast response; breath monitoring; THIN-FILMS; GRAPHENE; PRECISE; DEVICES;

D O I：

10.1021/acsami.8b18904

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Respiration monitoring is important for evaluating human health. Humidity sensing is a promising way to establish a relationship between human respiration and electrical signal. This work describes polymer humidity sensors with ultrafast response for respiration monitoring. The humidity-sensitive polyelectrolyte is in situ cross-linked on the substrate printed with interdigitated electrodes by a thiol ene click reaction. The polyelectrolyte humidity sensor shows rapid water adsorption/desorption ability, excellent stability, and repeatability. The sensor with ultrafast response and recovery (0.29/0.47 s) when changing humidity between 33 and 95% shows good application prospects in breath monitoring and touchless sensing. Different respiration patterns can be distinguished, and the breath rate/depth of detection subjects can also be determined by the sensor. In addition, the obtained sensor can sense the skin evaporation in a noncontact way.

引用

页码：6483 / 6490

页数：8

共 34 条

[1] ELECTRICAL CONDUCTIVITY OF SILICA GEL IN PRESENCE OF ADSORBED WATER [J].