Paper as Active Layer in Inkjet-Printed Capacitive Humidity Sensors

被引：86

作者：

Gaspar, Cristina ^{[1
]}

Olkkonen, Juuso ^{[1
]}

Passoja, Soile ^{[1
]}

Smolander, Maria ^{[1
]}

机构：

[1] VTT Tech Res Ctr Finland, Printed Funct Solut, Espoo 02044, Finland

来源：

SENSORS | 2017年 / 17卷 / 07期

关键词：

inkjet printing; paper; humidity sensor; nanoparticles; silver; SILVER TRACKS; ELECTRONICS; TECHNOLOGY;

D O I：

10.3390/s17071464

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An inkjet-printed relative humidity sensor based on capacitive changes which responds to different humidity levels in the environment is presented in this work. The inkjet-printed silver interdigitated electrodes configuration on the paper substrate allowed for the fabrication of a functional proof-of-concept of the relative humidity sensor, by using the paper itself as a sensing material. The sensor sensitivity in terms of relative humidity changes was calculated to be around 2 pF/RH %. The response time against different temperature steps from 3 to 85 degrees C was fairly constant (about 4-5 min), and it was considered fast for the aimed application, a smart label.

引用

页数：10

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