Shape memory and recovery mechanism in hard magnetic soft materials†

IF 2.9 3区 化学 Q3 CHEMISTRY, PHYSICAL
Soft Matter Pub Date : 2024-11-05 DOI:10.1039/D4SM01165A
Rong Jia, Kai Tan and Qian Deng
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引用次数: 0

Abstract

Hard-magnetic soft materials (HMSMs), which combine soft polymer matrices with hard-magnetic particles, have emerged as versatile materials capable of achieving complex deformations under magnetic fields. This work aims to provide a comprehensive understanding of the non-thermal shape memory and recovery mechanisms in HMSMs. By developing a theoretical model, we interpret the transfer of shape information between different field quantities, such as the remanent magnetization vectors and the magnetic forces. The two-dimensional thin beam model developed here implies that the two-way interaction between magnetization patterns and mechanical deformations is the key for the shape memory effect in HMSMs. Experiments also validate the theoretical model and the proposed mechanism for shape memory. Furthermore, the idea is extended to an example of information encryption and retrieval using HMSM thin films. This study offers valuable insights into the control of shape memory effects in HMSMs and presents opportunities for advancements in soft robotics, secure data storage, and responsive materials.

Abstract Image

硬磁软材料的形状记忆和恢复机制
硬磁软材料(HMSMs)结合了软聚合物基体和硬磁性颗粒,是一种能够在磁场作用下实现复杂变形的多功能材料。这项研究旨在全面了解 HMSMs 的非热形状记忆和恢复机制。通过建立理论模型,我们解释了不同磁场量(如剩磁化矢量和磁力)之间的形状信息传递。这里建立的二维薄梁模型意味着,磁化模式和机械变形之间的双向相互作用是高磁导磁体形状记忆效应的关键。实验也验证了理论模型和所提出的形状记忆机制。此外,还将这一观点扩展到使用 HMSM 薄膜进行信息加密和检索的实例中。这项研究为控制 HMSM 中的形状记忆效应提供了宝贵的见解,并为软机器人、安全数据存储和响应材料领域的发展提供了机遇。
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来源期刊
Soft Matter
Soft Matter 工程技术-材料科学:综合
CiteScore
6.00
自引率
5.90%
发文量
891
审稿时长
1.9 months
期刊介绍: Soft Matter is an international journal published by the Royal Society of Chemistry using Engineering-Materials Science: A Synthesis as its research focus. It publishes original research articles, review articles, and synthesis articles related to this field, reporting the latest discoveries in the relevant theoretical, practical, and applied disciplines in a timely manner, and aims to promote the rapid exchange of scientific information in this subject area. The journal is an open access journal. The journal is an open access journal and has not been placed on the alert list in the last three years.
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