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Issue 12, 2016
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Digital microfluidics with a magnetically actuated floating liquid marble

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Abstract

Controlled actuation of a floating liquid marble, a liquid droplet coated with hydrophobic particles floating on another liquid surface, is a potential digital microfluidics platform for the transport of aqueous solution with minimal volume loss. This paper reports our recent investigation on the magnetic actuation of floating liquid marbles filled with magnetic particles. The magnetic force and frictional force acting on the floating liquid marble determine the horizontal movement of the marble. We varied the magnetic flux density, flux density gradient, concentration of magnetic particles and speed of the marble to elucidate the relationship between the acting forces. We subsequently determined the suitable operating conditions for the actuation and derived the scaling laws for the actuation parameters.

Graphical abstract: Digital microfluidics with a magnetically actuated floating liquid marble

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Publication details

The article was received on 19 Mar 2016, accepted on 04 May 2016 and first published on 05 May 2016


Article type: Paper
DOI: 10.1039/C6LC00378H
Citation: Lab Chip, 2016,16, 2211-2218
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    Digital microfluidics with a magnetically actuated floating liquid marble

    M. K. Khaw, C. H. Ooi, F. Mohd-Yasin, R. Vadivelu, J. S. John and N. Nguyen, Lab Chip, 2016, 16, 2211
    DOI: 10.1039/C6LC00378H

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