Magnetomechanical Coupling of Single Domain Particles in Viscoelastic Matrices for Actuation and as Probes for Nanorheology

粘弹性基质中单域粒子的磁力耦合用于驱动和纳米流变学探针

• 批准号: 237976476
• 负责人: Professorin Dr. Annette M. Schmidt
• 金额: --
• 依托单位: Institut für Physikalische Chemie
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/237976476?language=en
• 关键词: Magnetomechanical; Coupling; Single; Domain; Particles

Shape-changing materials and other stimuli-sensitive materials open new perspective and a broad range of prospective applications - from novel actuators for robotics via biomedical devices that unfold in the body to clothing that adapts to its environment. The overall goal of the project is the development, realization and investigation of a lego system of functional, e. g. polymer or liquid-crystalline matrices of varying architecture and a nanoparticulate, magnetic probe- and actuator component, allowing the construction of magnetoactive hybrid materials with novel, field-controlled properties.In the first funding period, method development and the investigation of ferrohydrogels was in the focus of the project, while iin the second, our lego system was succesfully expanded to liquid-crystalline systems. For the final funding period, we strive to the realization of magnetoactive ternary hybrid materials, containing magnetic nanoparticles, polymers, and low molecular mesogens, and aiming at a interactive coupling between the magnetic, nematic and elastomeric component.Based on the yet developed and investigated hybrid architectures we will employ liquid crystalline component for the enhancement of the coupling between the magnetic component and elastic matrix in the different architectures and geometric configurations.Using different modes and degrees of coupling between the magnetic, the nematic and the elastomeric director, a spectrum pf magnetomechanical and magnetooptic effects are expected. Ferronematic polymers and elastomers posses potential for the application in magnetooptical storage devices and displays, and as magnetoactive actuators and sensors.

变形材料和其他刺激敏感材料开辟了新的视角和广泛的应用前景-从机器人的新型致动器到在体内展开的生物医学设备，再到适应环境的服装。该项目的总体目标是开发，实现和调查一个乐高系统的功能，e。G.在第一个资助期内，该项目的重点是方法开发和铁水凝胶的研究，而在第二个资助期内，我们的乐高系统成功地扩展到了液晶系统。在最后的资助期内，我们力争实现磁活性三元杂化材料，包含磁性纳米颗粒、聚合物和低分子介晶，并旨在实现磁性，基于尚未开发和研究的混合体系结构，我们将采用液晶组分来增强磁性组分和弹性基质之间的耦合，不同的结构和几何配置。使用不同的模式和程度的耦合之间的磁性，磁性和弹性指向矢，磁力学和磁光效应的频谱是预期的。铁磁聚合物和弹性体在磁光存储器件和显示器以及磁致激活致动器和传感器中具有潜在的应用。