Integrated Microactuator Systems Emphasizing Ni-Mn-Ga Films with a Tailored Microstructure INTACT - Design and System Integration of Microactuators with Discrete and Thin-Film MSM Elements

• Applicant: Professor Dr.-Ing. Hans-Heinrich Gatzen
• Subject Area: Mechanical Properties of Metallic Materials and their Microstructural Origins
• Term: from 2006 to 2011
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 28340651

This sub-project is part of a package proposal that has the objective to develop microactuators utilizing the magnetically induced change of length in magnetic shape memory(MSM) alloys. These materials achieve a length change of up to 10%, opening up anopportunity for creating compact micro actuators in thin-film technology, particularly if MSMthin-films are applied. Tasks pursued are the design as well as the modeling of hybrid andintegrated MSM micro actuators and research and development work on technologies forfabricating excitation components, like microcoils and permanent magnets for magnetic fluxgeneration and soft magnetic microstructures for guiding the flux. Furthermore, the hybridthin-film micro actuator, i.e. the one utilizing discrete MSM elements, will be fabricated andsubjected to an evaluation. This activity is aimed at already gaining experience with MSMmicro actuators while MSM thin-films are not yet available.

• DFG Programme: Priority Programmes
• Subproject of: SPP 1239: Modification of Microstructure and Shape of Solid Materials by External Magnetic Fields
• Participating Person: Privatdozentin Dr.-Ing. Christine Ruffert