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BP: Fachverband Biologische Physik
BP 26: Posters II
BP 26.18: Poster
Thursday, February 28, 2008, 17:00–19:30, Poster A
Mechanically actuated silicon microgrippers for micromanipulation of biological matter — •Marius M. Blideran1, Jochen Sterr2, Stephan Kleindiek2, Matthias G. Langer3,4, Francois Grauvogel3, Monika Fleischer1, and Dieter P. Kern1 — 1University of Tübingen, Institute of Applied Physics, Auf der Morgenstelle 10, 72076 Tübingen, Germany — 2Kleindiek Nanotechnik GmbH, Aspenhaustrasse 25, 72770 Reutlingen, Germany — 3Department of Applied Physiology, University of Ulm, 89081 Ulm, Germany — 4Carl Zeiss NTS GmbH, 73447 Oberkochen, Germany
Controlled gripping during the manipulation of objects is widely desired in the fields of microbiology and microassembly. Therefore it is important, especially when targeting biological structures to measure or calculate the forces exerted by the end segment of the manipulator. This way one would know exactly when the object under investigation is grabbed and what pressures are applied to it. Moreover, for handling objects only micrometers in size, microgrippers or tweezers with fine end-segments are required. On the other hand the manipulator has to be attached to a motor or actuator, which implies that the gripper has to be millimeters in size at its other end. The mechanical assembly of the gripper and the actuator proves to be a crucial step in realizing the system. This work presents solutions to the two challenges mentioned above: a method for determining the gripping forces combining experimental with simulation results, and a procedure for the secure construction of our micromanipulator. Finally results from tests of the system on micrometer-sized objects will be shown.