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배성철

Bae, Sung Chul
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Rotating crystals of magnetic Janus colloids

Author(s)
Yan, JingBae, Sung ChulGranick, Steve
Issued Date
2015-01
DOI
10.1039/c4sm01962h
URI
https://scholarworks.unist.ac.kr/handle/201301/9621
Fulltext
http://pubs.rsc.org/en/Content/ArticleLanding/2015/SM/C4SM01962H#!divAbstract
Citation
SOFT MATTER, v.3, no.1, pp.147 - 153
Abstract
Monodisperse magnetic colloids are found to self-assemble into unusual crystals in the presence of rotating magnetic fields. First, we confirm a predicted phase transition (S. Jager and S. H. L. Klapp, Soft Matter, 2011, 7, 6606-6616), directly coupled to the dynamic transition of single particle motion, from a disordered state to a hexagonal crystal. Next, going beyond what had been predicted, we report how hydrodynamic coupling produces shear melting, dislocations, and periodically mobile domain boundaries. These uniform magnetic colloids, whose structures are modulated in situ using the protocols described here, demonstrate a strategy of stimulus-response in the colloid domain with potential applicatio
Publisher
ROYAL SOC CHEMISTRY
ISSN
1744-683X
Keyword
ANISOTROPYSEPARATIONFIELDS

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