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arXiv · 1601.01030

Functional colloidal micro-sieves assembled and guided above a channel-free magnetic striped film

Fernando Martinez-Pedrero·Arthur V. Straube·Tom H. Johansen·Pietro Tierno
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Abstract

Colloidal inclusions in lab-on-a-chip devices can be used to perform analytic operations in a non-invasive fashion. We demonstrate here a novel approach to realize fast and reversible micro-sieving operations by manipulating and transporting colloidal chains via mobile domain walls in a magnetic structured substrate. We show that this technique allows to precisely move and sieve non-magnetic particles, to tweeze microscopic cargos or to mechanically compress highly dense colloidal monolayers.

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Fernando Martinez-Pedrero, Arthur V. Straube, Tom H. Johansen, Pietro Tierno. 2016-01-06. Functional colloidal micro-sieves assembled and guided above a channel-free magnetic striped film. https://doi.org/10.1039/c5lc00067j

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