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Xu Q, Tao Y, Wang Z, Zeng H, Yang J, Li Y, Zhao S, Tang P, Zhang J, Yan M, Wang Q, Zhou K, Zhang D, Xie H, Zhang Y, Bowen C. Highly Flexible, High-Performance, and Stretchable Piezoelectric Sensor Based on a Hierarchical Droplet-Shaped Ceramics with Enhanced Damage Tolerance. Adv Mater 2024; 36:e2311624. [PMID: 38281059 DOI: 10.1002/adma.202311624] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/07/2024] [Indexed: 01/29/2024]
Abstract
Stretchable self-powered sensors are of significant interest in next-generation wearable electronics. However, current strategies for creating stretchable piezoelectric sensors based on piezoelectric polymers or 0-3 piezoelectric composites face several challenges such as low piezoelectric activity, low sensitivity, and poor durability. In this paper, a biomimetic soft-rigid hybrid strategy is used to construct a new form of highly flexible, high-performance, and stretchable piezoelectric sensor. Inspired by the hinged bivalve Cristaria plicata, hierarchical droplet-shaped ceramics are manufactured and used as rigid components, where computational models indicate that the unique arched curved surface and rounded corners of this bionic structure can alleviate stress concentrations. To ensure electrical connectivity of the piezoelectric phase during stretching, a patterned liquid metal acts as a soft circuit and a silicone polymer with optimized wettability and stretchability serves as a soft component that forms a strong mechanical interlock with the hierarchical ceramics. The novel sensor design exhibits excellent sensitivity and durability, where the open circuit voltage remains stable after 5000 stretching cycles at 60% strain and 5000 twisting cycles at 180°. To demonstrate its potential in heathcare applications, this new stretchable sensor is successfully used for wireless gesture recognition and assessing the progression of knee osteoarthritis.
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Affiliation(s)
- Qianqian Xu
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, China
| | - Yong Tao
- School of Civil Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Zhenxing Wang
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Angmedicine, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Hanmin Zeng
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, China
| | - Junxiao Yang
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Yuan Li
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Angmedicine, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Senfeng Zhao
- Hunan Provincial Key Laboratory of Micro & Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha, Hunan, 410083, China
| | - Peiyuan Tang
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Jianxun Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, China
| | - Mingyang Yan
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, China
| | - Qingping Wang
- Department of Mechanical Engineering, University of Bath, Bath, BA2 7AY, UK
| | - Kechao Zhou
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, China
| | - Dou Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, China
| | - Hui Xie
- Department of Orthopedics, Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
- Hunan Key Laboratory of Angmedicine, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, 410008, China
| | - Yan Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, Hunan, 410083, China
| | - Chris Bowen
- Department of Mechanical Engineering, University of Bath, Bath, BA2 7AY, UK
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