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Polymers 2018, 10(6), 587; https://doi.org/10.3390/polym10060587

High-Performance Pressure Sensor for Monitoring Mechanical Vibration and Air Pressure

1
School of Nano-Technology and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
2
Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, China
*
Author to whom correspondence should be addressed.
Received: 4 April 2018 / Revised: 11 May 2018 / Accepted: 25 May 2018 / Published: 27 May 2018
(This article belongs to the Special Issue Soft Materials and Systems)
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Abstract

To realize the practical applications of flexible pressure sensors, the high performance (sensitivity and response time) as well as more functionalities are highly desired. In this work, we fabricated a piezoresistive pressure sensor based on the micro-structured composites films of multi-walled carbon nanotubes (MWCNTs) and poly (dimethylsiloxane) (PDMS). In addition, we establish efficient strategies to improve key performance of our pressure sensor. Its sensitivity is improved up to 474.13 kPa−1 by minimizing pressure independent resistance of sensor, and response time is shorten as small as 2 μs by enhancing the elastic modulus of polymer elastomer. Benefiting from the high performance, the functionalities of sensors are successfully extended to the accurate detection of high frequency mechanical vibration (~300 Hz) and large range of air pressure (6–101 kPa), both of which are not achieved before. View Full-Text
Keywords: pressure sensor; ultra-fast response; mechanical vibration and air pressure pressure sensor; ultra-fast response; mechanical vibration and air pressure
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Meng, Y.; Li, H.; Wu, K.; Zhang, S.; Li, L. High-Performance Pressure Sensor for Monitoring Mechanical Vibration and Air Pressure. Polymers 2018, 10, 587.

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