Publications [#234802] of Benjamin J. Wiley

Journal Articles

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 [21417363], [doi]
   (last updated on 2026/01/15)

   Abstract:
   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.