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Bae, Sung Chul
Multiscale Optical Imaging Lab
Research Interests
  • Multiscale optical imaging, laser spectroscopy, laser microscopy, laser sensing, soft matter physics, surface and interfacial science, laser Matter Interaction

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Rotating crystals of magnetic Janus colloids

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Title
Rotating crystals of magnetic Janus colloids
Author
Yan, JingBae, Sung ChulGranick, Steve
Issue Date
2015-01
Publisher
ROYAL SOC CHEMISTRY
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
URI
https://scholarworks.unist.ac.kr/handle/201301/9621
URL
http://pubs.rsc.org/en/Content/ArticleLanding/2015/SM/C4SM01962H#!divAbstract
DOI
10.1039/c4sm01962h
ISSN
1744-683X
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CHM_Journal Papers
BME_Journal Papers
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