Remote Manipulation of Droplets on a Flexible Magnetically Responsive Film.

Citation data:

Scientific reports, ISSN: 2045-2322, Vol: 5, Issue: 1, Page: 17843

Publication Year:
2015
Usage 1
Abstract Views 1
Citations 7
Citation Indexes 7
Repository URL:
http://scholarworks.unist.ac.kr/handle/201301/17999
PMID:
26648418
DOI:
10.1038/srep17843
PMCID:
PMC4673453
Author(s):
Kim, Jeong Hun, Kang, Seong Min, Lee, Byung Jun, Ko, Hangil, Bae, Won-Gyu, Suh, Kahp Yang, Kwak, Moon Kyu, Jeong, Hoon Eui
Publisher(s):
Springer Nature, NATURE PUBLISHING GROUP
Tags:
Multidisciplinary, WETTING PROPERTIES, SURFACES, WETTABILITY
article description
The manipulation of droplets is used in a wide range of applications, from lab-on-a-chip devices to bioinspired functional surfaces. Although a variety of droplet manipulation techniques have been proposed, active, fast and reversible manipulation of pure discrete droplets remains elusive due to the technical limitations of previous techniques. Here, we describe a novel technique that enables active, fast, precise and reversible control over the position and motion of a pure discrete droplet with only a permanent magnet by utilizing a magnetically responsive flexible film possessing actuating hierarchical pillars on the surface. This magnetically responsive surface shows reliable actuating capabilities with immediate field responses and maximum tilting angles of ~90°. Furthermore, the magnetic responsive film exhibits superhydrophobicity regardless of tilting angles of the actuating pillars. Using this magnetically responsive film, we demonstrate active and reversible manipulation of droplets with a remote magnetic force.

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