A.Waske, J.Eckert:Flowcontrol with porous magnetic hybrid materials
Description
The goal of the project “Flow control with porous magnetic hybrid materials” within the framework of the SPP 1681 is to develop a magnetic hybrid material whose flow properties can be controlled by an external magnetic field. A hybrid material consisting of shape anisotropic magnetic micro-particles and an elastic matrix with channels will be prepared and studied for its magnetic, mechanical, and fluid-mechanical properties. The change of the channel geometry in this material is triggered by tilting the external magnetic field and the associated change in angular position of the particles, which in turn deform the matrix elastically. By changing the shape of the channel cross-section (e.g. from circular to elliptical), a reduction of the hydraulic diameter and consequently an increasing pressure drop can be achieved.
External controllability of fluid mechanical properties in such a membrane could have a variety of applications, for example as a separator, or as a part of the separator in a Li-/Na-ion-battery whose permeability e.g. for the transport of ions, need to be limited in the case of excessive heat generation in the battery. In the first funding period of the SPP, we plan to demonstrate the feasibility of such a novel magnetic actor materials. For this purpose, a comprehensive characterization of the actor material is needed, which includes the microscopic, magnetic, and mechanical characterization of the components used and of the final hybrid material.
Schematic illustration of the working principle
Project Manager
Dr. Anja Waske, IFW Dresden
Prof. Dr. Jürgen Eckert, IFW Dresden
Staff
Maria Krautz, IFW Dresden
Grant period
2013 - 2015
Publications
[1] Zimmermann, K.; Zeidis, I.; Böhm, V.; Kaufhold, T.; Volkova, T.; Waske, A.; Krautz, M.; Schrödner, M.; Popp, J.; Kästner, M.; Spieler, C.: Mechanics of Actuators based on Magnetic Hybrid Materials with Application for Robotics, Fluid Control and Sensor Technology. Scientific Journal of IFToMM “Problems in Mechanics”, 57 (2014) 4, pp. 23-41, ISSN 1512-0740
Contact
IFW Dresden
Helmholtzstr. 20
01069 Dresden
Internet
http://www.ifw-dresden.de/en/institutes/institute-for-complex-materials/