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Micromachines
Volume 11
Issue 9
10.3390/mi11090857
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Article

Bending Properties of Carbon Nanotube/Polymer Composites with Various Aspect Ratios and Filler Contents

by
Oh-Nyoung Hur
,
Hyun-Woo Kim
and
Sung-Hoon Park
*
Department of Mechanical Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-Gu, Seoul 06978, Korea
*
Author to whom correspondence should be addressed.
Micromachines 2020, 11(9), 857; https://doi.org/10.3390/mi11090857
Submission received: 31 August 2020 / Revised: 14 September 2020 / Accepted: 15 September 2020 / Published: 17 September 2020
(This article belongs to the Special Issue Organic Electronic Devices, Volume II)
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Abstract

The key characteristics of bending sensors are piezoresistive effect, hysteresis, and durability. In this study, to investigate the influence of the aspect ratio and contents of multi-walled nanotubes (MWNTs) on the properties of bending sensors, MWNT/polydimethylsiloxane (PDMS) composites were fabricated with various aspect ratios and filler contents. The MWNTs were uniformly dispersed in the composites using the three-roll milling method. By increasing the bending angle gradually, the sensitivity of each composite was analyzed. Furthermore, discontinuous cyclic bending tests were conducted to investigate the piezoresistive effect and hysteresis. In addition, stable repeatability of the composites was confirmed through continuous cyclic bending tests. As a result, optimal aspect ratios and filler contents have been presented for application in bending sensors of MWNT composites.
Keywords: bending sensor; piezoresistive effect; hysteresis; multi-walled carbon nanotube; aspect ratio bending sensor; piezoresistive effect; hysteresis; multi-walled carbon nanotube; aspect ratio

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MDPI and ACS Style

Hur, O.-N.; Kim, H.-W.; Park, S.-H. Bending Properties of Carbon Nanotube/Polymer Composites with Various Aspect Ratios and Filler Contents. Micromachines 2020, 11, 857. https://doi.org/10.3390/mi11090857

AMA Style

Hur O-N, Kim H-W, Park S-H. Bending Properties of Carbon Nanotube/Polymer Composites with Various Aspect Ratios and Filler Contents. Micromachines. 2020; 11(9):857. https://doi.org/10.3390/mi11090857

Chicago/Turabian Style

Hur, Oh-Nyoung, Hyun-Woo Kim, and Sung-Hoon Park. 2020. "Bending Properties of Carbon Nanotube/Polymer Composites with Various Aspect Ratios and Filler Contents" Micromachines 11, no. 9: 857. https://doi.org/10.3390/mi11090857

APA Style

Hur, O.-N., Kim, H.-W., & Park, S.-H. (2020). Bending Properties of Carbon Nanotube/Polymer Composites with Various Aspect Ratios and Filler Contents. Micromachines, 11(9), 857. https://doi.org/10.3390/mi11090857

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