Sie sind hier: FRIAS Interdisciplinary … Fellows Ulrike Wallrabe

Ulrike Wallrabe

Institut für Mikrosystemtechnik
Technische Fakultät
Freiburg, Deutschland


Ulrike Wallrabe studied physics at the University of Karlsruhe, Germany. In 1992 she received her PhD degree for mechanical engineering for her thesis on microturbines and micromotors. From 1989 to 2003 she was with the Institute for Microstructure Technology (IMT) at Forschungszentrum Karlsruhe where she focused on microactuators and Optical MEMS made by the LIGA technique. Since 2003 she holds a professorship for microactuators at the Department of Microsystems Engineering, IMTEK, at the University of Freiburg, Germany. Her focus lies in magnetic microstructures and adaptive optics. She investigates the actuation principles and develops optimum designs with regard to function and proper manufacturing. Ulrike Wallrabe has published more than 90 papers in the field of microsystems technology.

Ausgewählte Publikationen

B. Mack, K. Kratt, M. Stürmer, U. Wallrabe, Electromagnetic micro generator array consisting of 3D micro coils opposing a magnetic PDMS membrane, TRANSDUCERS 2009, Denver, Co., USA, June 2009

F. Schneider, J. Draheim, R. Kamberger, P. Waibel, U. Wallrabe, Optical characterization of adaptive fluidic silicone-membrane lenses, Optics Express, 17, no. 14 (2009), pp. 11813-11823

T.-M. Chen, Z. Liu, J.G. Korvink, S. Krausse, U. Wallrabe, Topology optimization for a micro rotational mirror design and safe manufacturing, MEMS 2009, Sorrento, It., IEEE Cat. No. CFP09MEM-PRT, Jan. 2009, pp 1019-1022

F. Schneider, T. Fellner, J. Wilde, U. Wallrabe, Mechanical properties of silicones for MEMS, J. Micromech. Microeng., 18 2008, 065008 (9pp), DOI. 10.1088/0960-1317/18/6/065008

S. Schonhardt, J.G. Korvink, U. Hollenbach, J. Mohr, U. Wallrabe, Combdrive Configuration for an Electromagnetic Reluctance Actuator, J. Microelectromech. Syst., 17, no. 5 2008, pp. 1164-1171, DOI. 10.1109/JMEMS.2008.927068

K. Kratt, M. Seidel, M. Emmenegger, U. Wallrabe and J.G. Korvink, Solenoidal Micro coils manufactured with a wire bonder, MEMS 2008, Tucson, Az., USA, IEEE Cat. No. CFP08MEM-PRT, Jan. 2008, pp 996-999

U. Wallrabe, J.G. Korvink, J. Mohr, LIGA, Comprehensive Microsystems, Vol. 1, Materials, Fabrication and Packaging, Electronics and System Design, Y.B. Gianchan¬dani, O. Tabata, H. Zappe, eds., Elsevier 2008, pp. 292-340

V. Saile, U. Wallrabe, O. Tabata, J.G. Korvink (Volume Editors), LIGA and its appli¬cations, Advanced Micro & Nanosystems, O. Brand, G. Fedder, C. Hierold, J.G. Korvink, O. Tabata (Eds.), Wiley-VCH 2008, ISBN 978-3-527-31698-4

J. S. Han, C. Müller, U. Wallrabe, J, Korvink, Design, simulation, and fabrication of a quadstable monolithic mechanism with X- and Y-directional bistable curved beams, Journal of Mechanical Design, 129, no. 11, 2007, pp. 1198-1203, DOI. 10.1115/1.2771577

U. Wallrabe, C. Solf, J. Mohr, and J.G. Korvink,Miniaturized Fourier Transform Spectrometer for the near infrared wavelength regime incorporating an electromagnetic linear actuator, Sensors and Actuators A, 123-124C, (2005), pp. 459-467


Patient motion during magnetic resonance imaging (MRI) examinations generates artefacts which often render the resulting images clinically unusable. This significant problem hampers diagnosis and patient throughput. Our project aims at the development of a fully MR-compatible optical motion tracking system in order to monitor uncontrolled spontaneous patient movements in the MR scanner. The parameters measured will be used for a real-time correction of the MR data in order to reconstruct undisturbed images. To ensure the visibility of the tracked body part, the tracking system has to be placed inside of the magnet bore. Since the free space inside the magnet bore is extremely limited, the entire tracking system has to be very compact, thus, warranting a high degree of integration and the need of using micro components.

Beside the pure functional aspects of ADOPT, we will also focus on the acceptance of the technology. This relies on an easy and safe handling for the clinic personal, and, even more important, on sufficient comfort for the patient.