Micromechanics of Interactions Between Hard Magnetic Particles and Soft Matrix on Magneto-Mechanical Actuation

磁机械驱动中硬磁颗粒与软基体相互作用的微观力学

• 批准号: 1939543
• 负责人: Ruike Renee Zhao
• 金额: $ 39.88万
• 依托单位: Ohio State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-06-01 至 2021-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1939543&HistoricalAwards=false
• 关键词: Micromechanics; Interactions; Between; Hard; Magnetic

This award studies the micromechanics of the magneto-mechanical actuation of hard-magnetic soft active materials. These materials utilize the interactions between embedded hard-magnetic particles and applied magnetic fields to achieve actuation of the soft matrix materials. Hard-magnetic soft active materials are a new group of soft active materials that can be activated rapidly, reversibly, and remotely. These materials are composites with hard-magnetic particles embedded in soft matrices. The actuation is achieved through transferring the magnetic micro-torques in the magnetic particles to the soft matrix. They have demonstrated many advantages, such as untethered complex deformation, rapid response speed, and reversible actuation, showing promising potential for applications in soft robots and biomedical devices. However, due to the relatively new development of these materials, the understanding of how the microscopic behavior drives the macroscopic material actuation remains unknown. The work will provide the fundamental knowledge of the magneto-mechanical actuation mechanism of hard-magnetic soft active materials at the micromechanics level, the theory that can connect macroscopic effective properties with microscopic structures, and the understanding of how the stretch-induced softening effect can affect the macroscopic actuation. This project will provide new knowledge on how particle-particle and particle-matrix interactions can contribute individually and collectively to the actuation by using a micromechanics approach. The new knowledge will be used in a theoretical model to obtain the effective residual magnetic flux density. The work will also investigate how the Mullins effect affects actuation. The synergetic development on theoretical models, simulations and experimental testing will provide an effective platform to correlate the micromechanics and macroscale mechanical response of stimuli-responsive soft composites with micro-fillers. The project will use the exciting demonstrations of hard-magnetic soft active materials in soft robots as vehicles to promote STEM education with a focus on students from underrepresented groups as well as K-12 education.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项研究了硬磁性软活动材料的磁机械致动的微力学。这些材料利用嵌入的硬磁颗粒和施加的磁场之间的相互作用来实现软基质材料的致动。硬磁性软活动材料是一组新的软活动材料，可以快速，可逆，远程激活。这些材料是具有嵌入软矩阵中的硬磁颗粒的复合材料。通过将磁性颗粒中的磁性微孔转移到软基质中来实现该致动。 他们表现出许多优势，例如不受束缚的复杂变形，快速响应速度和可逆致动，显示出在软机器人和生物医学设备中应用的有希望的潜力。但是，由于这些材料的相对较新的发展，对微观行为如何驱动宏观材料驱动的理解仍然未知。这项工作将提供有关微机械级别的硬磁性软活动材料的磁力机械驱动机制的基本知识，该理论可以将宏观有效特性与微观结构联系起来，以及对拉伸诱导的软化效果如何影响宏观coscopic actuation的理解。该项目将提供有关颗粒粒子和粒子 - 矩阵相互作用如何通过使用微力学方法单独和集体促进的新知识。新知识将在理论模型中使用以获得有效的残留磁通密度。这项工作还将研究穆林斯效应如何影响致动。理论模型，模拟和实验测试的协同开发将提供一个有效的平台，以将刺激反应性软复合材料与微填充剂的微观力学和宏观机械响应相关联。 该项目将在软机器人中使用令人兴奋的硬性软活动材料作为促进STEM教育的激动人心的演示，重点是来自代表性不足的团体的学生以及K-12教育。这项奖项反映了NSF的法定任务，并被认为是值得通过基金会的知识分子和更广泛影响的评估来通过评估来获得支持的，审查了审查的审查标准。

项目成果

Evolutionary Algorithm‐Guided Voxel‐Encoding Printing of Functional Hard‐Magnetic Soft Active Materials

• DOI: 10.1002/aisy.202000060
• 发表时间: 2020-01
• 期刊: Advanced Intelligent Systems
• 影响因子: 7.4
• 作者: Shuai Wu;Craig M. Hamel;Qiji Ze;Fengyuan Yang;H. Qi;R. Zhao

Micromechanics Study on Actuation Efficiency of Hard-Magnetic Soft Active Materials

• DOI: 10.1115/1.4047291
• 发表时间: 2020-06
• 期刊: Journal of Applied Mechanics
• 作者: Rundong Zhang;Shuai Wu;Qiji Ze;R. Zhao

Untethered control of functional origami microrobots with distributed actuation

• DOI: 10.1073/pnas.2013292117
• 发表时间: 2020-09-29
• 期刊: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• 影响因子: 11.1
• 作者: Novelino, Larissa S.;Ze, Qiji;Zhao, Ruike
• 通讯作者: Zhao, Ruike

Magnetic Multimaterial Printing for Multimodal Shape Transformation with Tunable Properties and Shiftable Mechanical Behaviors

• DOI: 10.1021/acsami.0c13863
• 发表时间: 2021-03-24
• 期刊: ACS APPLIED MATERIALS & INTERFACES
• 影响因子: 9.5
• 作者: Ma, Chunping;Wu, Shuai;Zhao, Ruike
• 通讯作者: Zhao, Ruike