Magnetic liquid marbles, their manipulation and application in optical probing

Zhao, Yan, Xu, Zhiguang, Parhizkar, Marzieh, Fang, Jian, Wang, Xungai and Lin, Tong 2012, Magnetic liquid marbles, their manipulation and application in optical probing, Microfluidics and nanofluidics, vol. 13, no. 4, pp. 555-564.

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Title Magnetic liquid marbles, their manipulation and application in optical probing
Author(s) Zhao, Yan
Xu, Zhiguang
Parhizkar, Marzieh
Fang, Jian
Wang, Xungai
Lin, Tong
Journal name Microfluidics and nanofluidics
Volume number 13
Issue number 4
Start page 555
End page 564
Total pages 10
Publisher Springer
Place of publication Berlin, Germany
Publication date 2012-10
ISSN 1613-4982
1613-4990
Keyword(s) droplet
liquid marble
magnetic nanoparticle
microfluidics
microreactor
Summary Magnetic liquid marbles, an encapsulation of liquid droplet with hydrophobic magnetic particles, show remarkable responsiveness to external magnetic force and great potential to be used as a discrete droplet microfluidic system. In this study, we presented the manipulation of a magnetic liquid marble under an external magnetic field and calculated the maximum frictional force, the magnetic force required for actuating the liquid marbles and the effective surface tension of the magnetic liquid marble, as well as the threshold volume for the transition from quasi-spherical to puddle-like shape. By taking advantage of the unique feature of being opened and closed reversibly, we have proven the encapsulated droplets can be detected optically with a reflection-mode probe. Combining the open-close and optical detection also enables to probe chemical reactions taking place within liquid marbles. These remarkable features offer a simple yet powerful alternative to conventional discrete microfluidic systems and may have wide applications in biomedical and drug discovery. © 2012 The Author(s).
Language eng
Field of Research 091205 Functional Materials
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2012, Springer
Persistent URL http://hdl.handle.net/10536/DRO/DU:30051173

Document type: Journal Article
Collection: Institute for Frontier Materials
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