Hierarchical Assemblies of Superparamagnetic Colloids in Time-Varying Magnetic Fields

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dc.citation.journalTitleSoft Matteren_US
dc.contributor.authorSpatafora-Salazar, Alden_US
dc.contributor.authorLobmeyer, Danaen_US
dc.contributor.authorda Cunha, Lucas Hildebrand Piresen_US
dc.contributor.authorJoshi, Kedaren_US
dc.contributor.authorBiswal, Sibani Lisaen_US
dc.date.accessioned2021-01-06T18:51:26Zen_US
dc.date.available2021-01-06T18:51:26Zen_US
dc.date.issued2021en_US
dc.description.abstractMagnetically-guided colloidal assembly has proven to be a versatile method for building hierarchical particle assemblies. This review describes the dipolar interactions that govern superparamagnetic colloids in time-varying magnetic fields, and how such interactions have guided colloidal assembly into materials with increasing complexity that display novel dynamics. The assembly process is driven by magnetic dipole-dipole interactions, whose strength can be tuned to be attractive or repulsive. Generally, these interactions are directional in static external magnetic fields. More recently, time-varying magnetic fields have been utilized to generate dipolar interactions that vary in both time and space, allowing particle interactions to be tuned from anisotropic to isotropic. These interactions guide the dynamics of hierarchical assemblies of 1-D chains, 2-D networks, and 2-D clusters in both static and time-varying fields. Specifically, unlinked and chemically-linked colloidal chains exhibit complex dynamics, such as fragmentation, buckling, coiling, and wagging phenomena. 2-D networks exhibit controlled porosity and interesting coarsening dynamics. Finally, 2-D clusters have shown to be an ideal model system for exploring phenomena related to statistical thermodynamics. This review provides recent advances in this fast-growing field with a focus on its scientific potential.en_US
dc.identifier.citationSpatafora-Salazar, Ald, Lobmeyer, Dana, da Cunha, Lucas Hildebrand Pires, et al.. "Hierarchical Assemblies of Superparamagnetic Colloids in Time-Varying Magnetic Fields." <i>Soft Matter,</i> (2021) Royal Society of Chemistry: https://doi.org/10.1039/D0SM01878C.en_US
dc.identifier.doihttps://doi.org/10.1039/D0SM01878Cen_US
dc.identifier.urihttps://hdl.handle.net/1911/109766en_US
dc.language.isoengen_US
dc.publisherRoyal Society of Chemistryen_US
dc.rightsThis is an author's peer-reviewed final manuscript, as accepted by the publisher. The published article is copyrighted by the Royal Society of Chemistry.en_US
dc.titleHierarchical Assemblies of Superparamagnetic Colloids in Time-Varying Magnetic Fieldsen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpost-printen_US
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