A smart finger patch with coupled magnetoelastic and resistive bending sensors  

作　　者：Ziyi Dai Mingrui Wang Yu Wang Zechuan Yu Yan Li Weidong Qin Kai Qian 

机构地区：[1]School of Integrated Circuits,Shandong University,Jinan 250100,China [2]Department of Mechanical Engineering,University of Auckland,Auckland 1010,New Zealand [3]Department of Urology,Qilu Hospital of Shandong University,Jinan 250100,China [4]Shenzhen Research Institute of Shandong University,Shenzhen 518000,China [5]Department of Critical Care Medicine,Qilu hospital of Shandong university,Jinan 250100,China

出　　处：《Journal of Semiconductors》2025年第1期194-203,共10页半导体学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant No.12204271);Shenzhen Science and Technology Program(Grant No.JCYJ20220530141014032);Guangdong Basic and Applied Basic Research Foundation program(Grant No.2022A1515011526),China.

摘　　要：In the era of Metaverse and virtual reality(VR)/augmented reality(AR),capturing finger motion and force interactions is crucial for immersive human-machine interfaces.This study introduces a flexible electronic skin for the index finger,addressing coupled perception of both state and process in dynamic tactile sensing.The device integrates resistive and giant magnetoelastic sensors,enabling detection of surface pressure and finger joint bending.This e-skin identifies three phases of finger action:bending state,dynamic normal force and tangential force(sweeping).The system comprises resistive carbon nanotubes(CNT)/polydimethylsiloxane(PDMS)films for bending sensing and magnetoelastic sensors(NdFeB particles,EcoFlex,and flexible coils)for pressure detection.The inward bending resistive sensor,based on self-assembled microstructures,exhibits directional specificity with a response time under 120 ms and bending sensitivity from 0°to 120°.The magnetoelastic sensors demonstrate specific responses to frequency and deformation magnitude,as well as sensitivity to surface roughness during sliding and material hardness.The system’s capability is demonstrated through tactile-based bread type and condition recognition,achieving 92%accuracy.This intelligent patch shows broad potential in enhancing interactions across various fields,from VR/AR interfaces and medical diagnostics to smart manufacturing and industrial automation.

关 键 词：human machine interface flexible sensor wearable sensor giant magnetoelastic effect inward bending sensor 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]