文献类型：期刊文献

英文题名：3D Printing of Flexible Strain Sensor Array Based on UV-Curable Multiwalled Carbon Nanotube/Elastomer Composite

作者：Xiao, Ting[1];Qian, Cheng[1];Yin, Ruixue[1];Wang, Kemin[2];Gao, Yang[1];Xuan, Fuzhen[1]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Shanghai Univ, Sch Mechatron Engn & Automat, Shanghai 200444, Peoples R China

年份：2021

卷号：6

期号：1

外文期刊名：ADVANCED MATERIALS TECHNOLOGIES

收录：;EI(收录号：20204809556545);WOS:【SCI-EXPANDED(收录号:WOS:000590570700001)】；

基金：This project was supported by the National Key Research and Development Program of China (Grant No. 2018YFB1105400), the National Natural Science Foundation of China (Grant Nos. 51705154, 51835003, and 61804054), Joint Fund of Ministry of Education of China for Equipment Preresearch (Grant No. 6141A02022136), the Shanghai Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning, and Shanghai Rising Star Program (A type) (Grant No. 18QA1401300).

语种：英文

外文关键词：3D printing; external stimuli detection; flexible stain sensors; multiwalled carbon nanotubes

摘要：Internet of things (IoT) is expected to significantly improve every aspect of society, especially in soft robotics, structural health monitoring, and human motion detection. Flexible strain sensors with high-performance characteristics as well as highly efficient and cost-effective maskless fabrication methods are the key components of IoT for these applications. Herein, a 3D printing technology using digital light processing is developed to fabricate high-performance flexible strain sensors based on UV-curable multiwalled carbon nanotubes/elastomer (MWCNT/EA) composite. The MWCNT/EA-based device with 2 wt% MWCNTs delivers a sensitivity of 8.939 with a linearity up to 45% strain. Additionally, the sensor has a detectable strain range from 0.01% to 60%, a high mechanical durability (10 000 cycles), and linear responses to humidity and temperature. Numerical simulation and impedance study indicate that the sensor works on the deformation-induced reduction of MWCNT conductive pathway. The developed device can be used to detect various external deformation, when combined with a near-field communication circuit. Moreover, a 4 x 4 strain sensor array is developed for sensing external stimuli distribution, further demonstrating the high performance of the 3D printed device.