Show simple item record Gao, L Gottron, NJ Virgin, LN Yellen, BB
dc.coverage.spatial England 2011-06-21T17:27:16Z 2010-08-21
dc.identifier.citation Lab Chip, 2010, 10 (16), pp. 2108 - 2114
dc.identifier.issn 1473-0197
dc.description.abstract We present theoretical, numerical, and experimental analyses on the non-linear dynamic behavior of superparamagnetic beads exposed to a periodic array of micro-magnets and an external rotating field. The agreement between theoretical and experimental results revealed that non-linear magnetic forcing dynamics are responsible for transitions between phase-locked orbits, sub-harmonic orbits, and closed orbits, representing different mobility regimes of colloidal beads. These results suggest that the non-linear behavior can be exploited to construct a novel colloidal separation device that can achieve effectively infinite separation resolution for different types of beads, by exploiting minor differences in their bead's properties. We also identify a unique set of initial conditions, which we denote the "devil's gate" which can be used to expeditiously identify the full range of mobility for a given bead type.
dc.format.extent 2108 - 2114
dc.language eng
dc.language.iso en_US en_US
dc.relation.ispartof Lab Chip
dc.relation.isversionof 10.1039/c003836a
dc.subject Algorithms
dc.subject Ferrosoferric Oxide
dc.subject Magnetics
dc.subject Microspheres
dc.subject Models, Theoretical
dc.subject Nonlinear Dynamics
dc.subject Particle Size
dc.title The synchronization of superparamagnetic beads driven by a micro-magnetic ratchet.
dc.title.alternative en_US
dc.type Journal Article
dc.description.version Version of Record en_US 2010-00-00 en_US
duke.description.endpage 2114 en_US
duke.description.issue 16 en_US
duke.description.startpage 2108 en_US
duke.description.volume 10 en_US
dc.relation.journal Lab on a Chip en_US
pubs.issue 16
pubs.organisational-group /Duke
pubs.organisational-group /Duke/Pratt School of Engineering
pubs.organisational-group /Duke/Pratt School of Engineering/Biomedical Engineering
pubs.organisational-group /Duke/Pratt School of Engineering/Civil and Environmental Engineering
pubs.organisational-group /Duke/Pratt School of Engineering/Mechanical Engineering and Materials Science
pubs.publication-status Published
pubs.volume 10

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