A Novel Printed Fabric Based Porous Capacitive Pressure Sensor For Flexible Electronic Applications

被引：41

作者：

Masihi, S. ^{[1
]}

Panahi, M. ^{[1
]}

Maddipatla, D. ^{[1
]}

Bose, A. K. ^{[1
]}

Zhang, X. ^{[1
]}

Hanson, A. J. ^{[1
]}

Palaniappan, V. ^{[1
]}

Narakathu, B. B. ^{[1
]}

Bazuin, B. J. ^{[1
]}

Atashbar, M. Z. ^{[1
]}

机构：

[1] Western Michigan Univ, Dept Elect & Comp Engn, Kalamazoo, MI 49008 USA

来源：

2019 IEEE SENSORS | 2019年

关键词：

Capacitive pressure sensor; fabric electrodes; nitric acid; porous PDMS; sodium bicarbonate; COMPOSITE; TOUCH;

D O I：

10.1109/sensors43011.2019.8956672

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel porous polydimethylsiloxane (PDMS) capacitive pressure sensor was fabricated on a fabric platform using additive screen printing process. The porous PDMS was prepared using a mixture of PDMS, sodium hydrogen bicarbonate (NaHCO3) and nitric acid (HNO3) and implemented as a dielectric layer. The fabric based top and bottom electrodes were developed by screen printing silver (Ag) ink on thermoplastic polyurethane (TPU) and permanently attaching it on to a fabric using heat lamination process. The capacitive response of the pressure sensor was recorded for varying pressures ranging from 0 to 900 kPa. A relative capacitance change of similar to 10%, similar to 180% and similar to 300% was obtained for the applied pressure ranges of 0 to 20 kPa, 50 to 200 kPa and 300 to 900 kPa, respectively. The detailed fabrication process of the pressure sensor as well as its capacitive response is analyzed and reported in this paper.

引用

页数：4

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