Lead‐Free Piezoelectric Composite Based on a Metamaterial for Electromechanical Energy Conversion

• DOI: 10.1002/admt.202200650
• Publication Date: 2022-07-28T20:30:29Z
• Authors: Zehuan Wang; Jin Cheng; Yan Xie; Yunhan Wang; Zhonghui Yu; Shuai Li; Liuting Li; Shuxiang Dong; Hong Wang
• Keywords: Barium titanate; Polydimethylsiloxane; Stretchable electronics; Transfer printing

Abstract Additive manufacturing of arbitrary shapes and unique architecture provides remarkable flexibility simplicity for the preparation highly complex conformal electronics. This drives up demand electronic materials with excellent process ability functionality from one‐step molding microminiature to large‐scale devices. Herein, a novel method is introduced fabricating high‐performance barium titanate (BaTiO 3 )‐polydimethylsiloxane composites based on three‐dimensional (3D)‐printing‐ordered structure metamaterial skeleton. When subjected external mechanical stress, facilitates effective stress transfer, resulting in significantly improved voltage output. In comparison traditional low‐dimensional ceramic polymer composites, metamaterial‐structured BaTiO exhibit electromechanical energy conversion properties, thereby enabling tactile imitation applications harvesting. study proposes strategy biological signal identification implantable self‐powered applications.