Flexible sensors with zero Poisson’s ratio  

作　　者：Xin Huang Tianzhao Bu Qingyang Zheng Shaoyu Liu Yangyang Li Han Fang Yuqi Qiu Bin Xie Zhouping Yin Hao Wu 

机构地区：[1]Department of Mechanical Engineering,Flexible Electronics Research Center,State Key Laboratory of Intelligent Manufacturing Equipment and Technology,School of Mechanical Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China [2]Department of Electronic Science and Technology,School of Integrated Circuits,Huazhong University of Science and Technology,Wuhan 430074,China

出　　处：《National Science Review》2024年第5期146-162,共17页国家科学评论（英文版）

基　　金：supported by the National Key R&D Program of China(2022YFB4700201);the National Natural Science Foundation of China(52350121,U2013213,52188102 and 92048302).

摘　　要：Flexible sensors have been developed for the perception of various stimuli.However,complex deformation,usually resulting from forces or strains from multi-axes,can be challenging to measure due to the lack of independent perception of multiaxial stimuli.Herein,flexible sensors based on the metamaterial membrane with zero Poisson’s ratio(ZPR)are proposed to achieve independent detection of biaxial stimuli.By deliberately designing the geometric dimensions and arrangement parameters of elements,the Poisson’s ratio of an elastomer membrane can be modulated from negative to positive,and the ZPR membrane can maintain a constant transverse dimension under longitudinal stimuli.Due to the accurate monitoring of grasping force by ZPR sensors that are insensitive to curvatures of contact surfaces,rigid robotic manipulators can be guided to safely grasp deformable objects.Meanwhile,the ZPR sensor can also precisely distinguish different states of manipulators.When ZPR sensors are attached to a thermal-actuation soft robot,they can accurately detect the moving distance and direction.This work presents a new strategy for independent biaxial stimuli perception through the design of mechanical metamaterials,and may inspire the future development of advanced flexible sensors for healthcare,human–machine interfaces and robotic tactile sensing.

关 键 词：zero Poisson’s ratio METAMATERIALS independent perception of multiaxial stimuli flexible sensor 

分 类 号：TN873[电子电信—信息与通信工程]