| Title | Imaginary magnetic tweezers for massively parallel surface adhesion spectroscopy. |
| Publication Type | Journal Article |
| Year of Publication | 2011 |
| Authors | Y Yang, RM Erb, BJ Wiley, S Zauscher, and BB Yellen |
| Journal | Nano Letters |
| Volume | 11 |
| Issue | 4 |
| Start Page | 1681 |
| Pagination | 1681 - 1684 |
| Date Published | 04/2011 |
| 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. |
| DOI | 10.1021/nl200189w |
| Short Title | Nano Letters |