Magnetic micropillars as a tool to govern substrate deformations
Le Digabel J, Biais N, Fresnais J, Berret JF, Hersen P, Ladoux B (2011)
Publication Type: Journal article
Publication year: 2011
Journal
Book Volume: 11
Pages Range: 2630-2636
Journal Issue: 15
DOI: 10.1039/c1lc20263d
Abstract
Magnetic actuated microdevices can be used to achieve several complex functions in microfluidics and microfabricated devices. For example, magnetic mixers and magnetic actuators have been proposed to help handling fluids at a small scale. Here, we present a strategy to create magnetically actuated micropillar arrays. We combined microfabrication techniques and the dispersion of magnetic aggregates embedded inside polymeric matrices to design micrometre scale magnetic features. By creating a magnetic field gradient in the vicinity of the substrate, well-defined forces were applied on these magnetic aggregates which in turn induced a deflection of the micropillars. By dispersing either spherical aggregates or magnetic nanowires into the gels, we can induce synchronized motions of a group of pillars or the movement of isolated pillars under a magnetic field gradient. When combined with microfabrication processes, this versatile tool leads to local as well as global substrate actuations within a range of dimensions that are relevant for microfluidics and biological applications. © 2011 The Royal Society of Chemistry.
Authors with CRIS profile
Involved external institutions
University of Paris 7 - Denis Diderot / Université Paris VII Denis Diderot
France (FR)
Columbia University
United States (USA) (US)
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
France (FR)
France (FR)
Columbia University
United States (USA) (US)
National Center for Scientific Research / Centre national de la recherche scientifique (CNRS)
France (FR)
How to cite
APA:
Le Digabel, J., Biais, N., Fresnais, J., Berret, J.F., Hersen, P., & Ladoux, B. (2011). Magnetic micropillars as a tool to govern substrate deformations. Lab on A Chip, 11(15), 2630-2636. https://doi.org/10.1039/c1lc20263d
MLA:
Le Digabel, Jimmy, et al. "Magnetic micropillars as a tool to govern substrate deformations." Lab on A Chip 11.15 (2011): 2630-2636.
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