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Pratt School of Engineering
Duke University

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Publications [#263385] of Stefan Zauscher

Papers Published

  1. Yang, Y; Erb, RM; Wiley, BJ; Zauscher, S; Yellen, BB, Imaginary magnetic tweezers for massively parallel surface adhesion spectroscopy., Nano Letters, vol. 11 no. 4 (April, 2011), pp. 1681-1684, ISSN 1530-6984 [21417363], [doi]
    (last updated on 2017/09/20)

    A massively parallel magnetic tweezer system has been constructed that utilizes the self-repulsion of colloidal beads from a planar interface via a magnetic dipole image force. Self-repulsion enables the application of a uniform magnetic force to thousands of beads simultaneously, which permits the measurement of unbinding histograms at the lowest loading rates ever tested. The adhesion of 9.8 μm polystyrene beads to a fluorocarbon, PEG, and UV-irradiated PEG surfaces were measured between 10(-3)-10(0) pN/s force loading rates, revealing the presence of both kinetic and quasi-equilibrium unbinding regimes.

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