Magnetic tweezers for intracellular applications

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Magnetic tweezers for intracellular applications

Please use this identifier to cite or link to this item: http://hdl.handle.net/10355/8051

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Title: Magnetic tweezers for intracellular applications
Author: Hosu, Basarab Gabriel, 1968-; Jakab, Karoly Robert, 1974-; Banki, Peter; Toth, Ferenc I.; Forgács, Gabor, 1949-
Keywords: micromanipulators
subcellular structure and processes
Date: 2003-06-06
Publisher: American Institute of Physics
Citation: Rev. Sci. Instrum. 74, 4158 (2003)
Abstract: We have designed and constructed a versatile magnetic tweezer primarily for intracellular investigations. The micromanipulator uses only two coils to simultaneously magnetize to saturation micron-size superparamagnetic particles and generate high magnitude constant field gradients over cellular dimensions. The apparatus resembles a miniaturized Faraday balance, an industrial device used to measure magnetic susceptibility. The device operates in both continuous and pulse modes. Due to its compact size, the tweezers can conveniently be mounted on the stage of an inverted microscope and used for intracellular manipulations. A built-in temperature control unit maintains the sample at physiological temperatures. The operation of the tweezers was tested by moving 1.28 μm diameter magnetic beads inside macrophages with forces near 500 pN.
URI: http://hdl.handle.net/10355/8051
ISSN: 0034-6748

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