Tailored wrinkles for tunable sensing performance by stereolithography  

作　　者：Ruiyi Jiang Jie Pu Yuxuan Wang Jipeng Chen Gangwen Fu Xue Chen Jiayu Yang Jianghua Shen Xing Sun Jun Ding Xi Xu 

机构地区：[1]Key Laboratory of Flexible Electronics of Zhejiang Province,Ningbo Institute of Northwestern Polytechnical University,Ningbo,China [2]Frontiers Science Center for Flexible Electronics,Institute of Flexible Electronics,Northwestern Polytechnical University,Xi'an,China [3]Research&Development,Institute of Northwestern Polytechnical University in Shenzhen,Nanshan District,Shenzhen,China [4]Affiliated Hospital of Nanjing University of Chinese Medicine,Nanjing,China [5]School of Aeronautics,Northwestern Polytechnical University,Xi'an,China [6]Combustion,Internal Flow and Thermal-Structure Laboratory,School of Astronautics,Northwestern Polytechnical University,Xi'an,China [7]Department of Materials Science and Engineering,Faculty of Engineering,National University of Singapore,Singapore

出　　处：《Interdisciplinary Materials》2024年第3期414-424,共11页交叉学科材料（英文）

基　　金：Fundamental Research Funds for the Central Universities;Basic and Applied Basic Research Foundation of Guangdong Province,Grant/Award Number:2022A1515111227;Natural Science Foundation of Shaanxi Province,Grant/Award Number:2023‐JC‐QN‐0598;China Postdoctoral Science Foundation,Grant/Award Number:2023T160529。

摘　　要：Conducting polymer hydrogel can address the challenges of stricken biocompatibility and durability.Nevertheless,conventional conducting polymer hydrogels are often brittle and weak due to the intrinsic quality of the material,which exhibits viscoelasticity.This property may cause a delay in sensor response time due to hysteresis.To overcome these limitations,we have designed a wrinkle morphology three-dimensional(3D)substrate using digital light processing technology and then followed by in situ polymerization to form interpenetrating polymer network hydrogels.This novel design results in a wrinkle morphology conducting polymer hydrogel elastomer with high precision and geometric freedom,as the size of the wrinkles can be controlled by adjusting the treating time.The wrinkle morphology on the conducting polymer hydrogel effectively reduces its viscoelasticity,leading to samples with quick response time,low hysteresis,stable cyclic performance,and remarkable resistance change.Simultaneously,the 3D gradient structure augmented the sensor's sensitivity under minimal stress while exhibiting consistent sensing performance.These properties indicate the potential of the conducting polymer hydrogel as a flexible sensor.

关 键 词：3D printing conducting polymer hydrogel flexible sensor micro-wrinkle structure 

分 类 号：O63[理学—高分子化学]