Carbon nanotube four-terminal devices for pressure sensing applications

Dinh, Toan and Nguyen, Tuan-Khoa and Phan, Hoang-Phuong and Ghavamian, Ali and Tran, Canh-Dung and Dau, Thanh-Van and Nguyen, Nam-Trung and Dao, Dzung Viet (2018) Carbon nanotube four-terminal devices for pressure sensing applications. In: KES International Conferences on Sustainable Design and Manufacturing (SDM-18) and Sustainability in Energy and Buildings (SEB-18), 24-26 June 2018, Gold Coast, Australia.

Abstract

Carbon nanotubes (CNTs) are of high interest for sensing applications, owing to their superior mechanical strength, high Young’s modulus and low density. In this work, we report on a facile approach for the fabrication of carbon nanotube devices using a four terminal configuration. Oriented carbon nanotube films were pulled out from a CNT forest wafer and then twisted into a yarn. Both the CNT film and yarn were arranged on elastomer membranes/diaphragms which were ar-ranged on a laser cut acrylic frame to form pressure sensors. The sensors were calibrated using a precisely controlled pressure system, showing a large change of the output voltage of approximately 50 mV at a constant supply current of 100µA and under a low applied pressure of 15 mbar. The results indicate the high potential of using CNT films and yarns for pressure sensing applications.


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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Accepted version embargoed until 1 July 2019 (12 months), in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Mechanical and Electrical Engineering
Date Deposited: 11 Dec 2018 05:46
Last Modified: 11 Mar 2019 02:51
Uncontrolled Keywords: carbon nanotube, pressure sensor, flexible/stretchable devices
Fields of Research : 09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
URI: http://eprints.usq.edu.au/id/eprint/34748

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