3D printing of flexible piezoelectric composite with integrated sensing and actuation applications  

作　　者：Jiang Li Yan Zhang Mingyang Yan Chao Zhong Lianzhong Zhao Di Zhai Hang Luo Xi Yuan Dou Zhang 

机构地区：[1]State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,China [2]College of Chemistry and Chemical Engineering,Central South University,Changsha 410083,China

出　　处：《Advanced Powder Materials》2024年第5期91-100,共10页先进粉体材料（英文）

基　　金：supported by the National Key R&D Program of China(2020YFA0711700);the National Natural Science Foundation of China(Grant No.U19A2087,52172134,52102150);the Science and Technology Innovation Program of Hunan Province(No.2022RC1029).

摘　　要：3D printing of flexible piezoelectric composites(3D-FPCs)is increasingly attracting the attention due to its unique advantage for customized smart applications.However,current research mainly focuses on the 0-3 piezoelectric composites,in which the piezoelectric ceramics are embedded in polymer matrix in the form of particles.The poor connectivity between particles much reduces the conduction of strain and charge in the composites,seriously limiting its application in actuation.In this work,a continuous lead zirconate titanate(PZT)double-layer ceramic scaffold was prepared by 3D printing and assembled with epoxy resin and interdigital electrodes together to manufacture a multifunctional device.The 3D-FPCs exhibit a free strain of 1830 ppm in actuating and are able to actuate a stainless-steel cantilever beam to produce a tip displacement of 5.71 mm.Additionally,the devices exhibit a sensitivity of 26.81V/g in sensing applications.Furthermore,3D-FPCs are demonstrated as actuators for mobile small robots and wearable sensors for sensing joint activities.

关 键 词：3D printing Direct ink writing Flexible piezoelectric composites ACTUATION SENSING 

分 类 号：TB3[一般工业技术—材料科学与工程]