A study of conductive thermoplastic elastomeric polyurethane and graphene nanocomposite thin films for application to flexible electrical sensors

被引：1

作者：

Debao Z. ^{[1
]}

Bai J. ^{[2
]}

Yang N. ^{[3
]}

Li X. ^{[4
]}

Miao C. ^{[4
]}

Zhao L. ^{[5
]}

机构：

[1] Department of Mechanical and Industrial Engineering, University of Minnesota Duluth, Duluth, MN

[2] Department of Electrical Engineering, University of Minnesota Duluth, Duluth, MN

[3] School of Materials Science and Engineering, Tiangong University, Tianjin

[4] School of Electronic and Information Engineering, Tiangong University, Tianjin

[5] College of Robotics, Beijing Union University, Beijing

来源：

Materials Research Innovations | 2021年 / 25卷 / 03期

关键词：

e-skin; graphene; hysteresis; noise; pressure sensitive; TPU; weight percentage;

D O I：

10.1080/14328917.2020.1766291

中图分类号：

学科分类号：

摘要：

Pressure-sensitive thin film is one of the major components in flexible electrical sensors (e-skin sensors). The thin film are normally conductive and durable. However, its applications are often limited, due to its big noise and hysteresis. In this research, we developed a new nanocomposite made with thermoplastic-polyurethane (TPU) and graphene to measure contact pressure. To ensure a minimum noise level in the measurement, we prepared it through an iterative heating, sonication, and phase inversion process. Then we studied the relationship between the measured resistance and applied force through the comprehensive consideration of the graphene weight percentage, the size of the sensing elements, and the loading/unloading speed. We also characterised its hysteresis and repeatability. Finally, the nanocomposite with the best comprehensive results was selected and stencil-printed in the holes on a polydimethylsiloxane film to be used as the sensing element of e-skin sensors. © 2020 Informa UK Limited, trading as Taylor & Francis Group.

引用

页码：162 / 168

页数：6

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