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RESEARCH PRODUCT
Dipolar Rings of Microscopic Ellipsoids: Magnetic Manipulation and Cell Entrapment
Andrejs CebersFernando Martinez-pedreroPietro Tiernosubject
Camps magnèticsFOS: Physical sciencesGeneral Physics and Astronomy02 engineering and technologyCondensed Matter - Soft Condensed Matter01 natural sciencesImaging phantom0103 physical sciencesNanotechnologyColloids010306 general physicsAnisotropyCol·loidesPhysicsCondensed matter physicsNanotecnologia021001 nanoscience & nanotechnologyEllipsoidDynamicsDipoleFerromagnetismMagnetic fieldsDinàmicaSoft Condensed Matter (cond-mat.soft)Biological cellCell entrapment0210 nano-technologyMagnetic manipulationdescription
We study the formation and dynamics of dipolar rings composed by microscopic ferromagnetic ellipsoids, which self-assemble in water by switching the direction of the applied field. We show how to manipulate these fragile structures and control their shape via application of external static and oscillating magnetic fields. We introduce a theoretical framework which describes the ring deformation under an applied field, allowing to understand the underlying physical mechanism. Our microscopic rings are finally used to capture, entrap and later release a biological cell via magnetic command, i.e. performing a simple operation which can be implemented in other microfluidic devices which make use of ferromagnetic particles.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 | Physical Review Applied |