Architectural design of flexible anisotropic piezoresistive composite for multiple-loading recognization. (1st February 2020)

• Record Type: Journal Article
• Authors: Huang, Pei; Yu, Xiao-Guang; Li, Yuan-Qing; Fu, Ya-Fei; Gan, Dong-Ming; Taha, Tarek; Fu, Ya-Qin; Hu, Ning; Fu, Shao-Yun
• Is Part Of: Composites. Number 182(2020)
• Publication Date: 2020-02-01
• Subjects: Composite materials -- Periodicals; Materials science -- Periodicals; Composite materials; Periodicals; Electronic journals; 620.118
• DOI: 10.1016/j.compositesb.2019.107631
• Languages: English
• ISSNs: 1359-8368

Abstract

Abstract: Fabrication of anisotropic piezoresistive materials is ultimately important for the realization of multi-loading recognization in robotics, auto-driving, artificial intelligence and health care, etc., whereas most of the existing production strategies are time-consuming and costly. Herein, we applied a simple structural design of carbonized cotton thread (CCT) to produce anisotropic piezoresistive CCT/silicone composites. Specifically, the rectangular wave shaped CCT/silicone composite (Re-CCT) and straight CCT/silicone composite (St-CCT), which exhibit distinct sensing performance to tension and compression, are fabricated. Their sensors' gauge factor (GF) for tension and compression obeys: GFTen-St > GFCom-St ≈ GFCom-Re > GFTen-Re ≈ 0. Consequently, the flexible multifunctional anisotropic piezoresistive composite integrated with Re-CCT and St-CCT is able to distinguish multiple loading modes, including compression, tension and their combination, via monitoring the micro-deformation applied by a finger and the status of a bottle handled by a robotic hand. The current strategy shows a great promise in manufacturing flexible anisotropic piezoresistive composite sensors for robotics, auto-driving, artificial intelligence and health care applications, etc. Graphical abstract: Image 1