磁性软材料的光热编程实现复杂且可重构的三维形变
Photothermalprogramming of magnetic soft materials for complex and reconfigurable 3D deformations
鲍义文 1李霁雨 2汪韬 1王柳 3徐航勋1
作者信息
- 1. Collaborative Innovation Center of Chemistry for Energy Materials(iChEM),Key Laboratory of Precision and Intelligent Chemistry,Department of Polymer Science and Engineering,University of Science and Technology of China,Hefei 230026,China
- 2. CAS Key Laboratory of Mechanical Behavior and Design of Materials,Department of Modern Mechanics,University of Science and Technology of China,Hefei 230026,China
- 3. CAS Key Laboratory of Mechanical Behavior and Design of Materials,Department of Modern Mechanics,University of Science and Technology of China,Hefei 230026,China;State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China
- 折叠
摘要
响应性软材料能够在外部刺激下进行复杂、可逆且快速的几何变形,在微创医学、可穿戴设备和软体机器人等领域具有巨大应用潜力.在本研究中,我们提出了一种通过光热编程设计可重构三维变形磁性软材料的新方法.通过将硬磁性颗粒嵌入由纤维状聚吡咯(PPy)和半结晶聚合物组成的聚合物材料中,我们开发出了一种磁性复合材料,该材料可以在外部磁场下进行远程控制,实现精确的可编程变形.该方法重要的创新点在于,利用PPy的光热效应,当材料受到红外光辐照时,复合材料的黏度发生暂时改变,从而允许磁性颗粒进行动态可控定向运动;冷却后,磁性各向异性固化,材料能够快速且可逆地进行几何变形.该方法能够对磁化分布进行精细控制,从而开发出多功能设备,具有诸如软体机器人复杂三维变形、多模态电气开关、可重写的快速响应码以及可变形夹具等多种潜在应用.本研究不仅加深了对软材料中磁矩编程的理解,也为自适应和响应性材料的设计开辟了新的途径,推动了先进技术应用的发展.
Abstract
Responsive soft materials capable of complex,reversible,and rapid geometric deformations under external stimuli hold significant potential for applications in mini-mally invasive medicine,wearable devices,and soft robotics.In this study,we present a novel approach for designing re-configurable three dimensional(3D)deformable magnetic soft materials through photothermal programming.By embedding hard magnetic particles within a polymer matrix composed of fibrous polypyrrole(PPy)and semi-crystalline polymer,we develop magnetic composites that can be remotely controlled to achieve precise,programmable deformations under an ex-ternal magnetic field.The key innovation lies in utilizing the photothermal effect of PPy,which temporarily alters the viscosity of the composite when irradiated with infrared light,allowing dynamic orientation of the magnetic particles.Upon cooling,the magnetic anisotropy is solidified,enabling rapid and reversible geometric changes.This method allows for in-tricate control over the magnetization distribution,leading to the development of multifunctional devices with various po-tential applications such as complex 3D deformations for soft robotics,multimodal electrical switches,rewritable quick re-sponse codes,and shape-adaptable grippers.Our study not only enhances the understanding of magnetic moment pro-gramming in soft materials but also opens new avenues for the design of adaptive and responsive materials for advanced technological applications.
关键词
photothermal reprogramming/magnetic soft mate-rials/3D deformation/soft robotics/responsive materialsKey words
photothermal reprogramming/magnetic soft mate-rials/3D deformation/soft robotics/responsive materials引用本文复制引用
出版年
2024
NETL
NSTL
万方数据