Abstract:
:Freezing colloidal suspensions widely exists in nature and industry. Interface instability has attracted much attention for the understandings of the pattern formation in freezing colloidal suspensions. However, the interface instability modes, the origin of the ice banding or ice lamellae, are still unclear. In-situ experimental observation of the onset of interface instability remains absent up to now. Here, by directly imaging the initial transient stage of planar interface instability in directional freezing colloidal suspensions, we proposed three interface instability modes, Mullins-Sekerka instability, global split instability and local split instability. The intrinsic mechanism of the instability modes comes from the competition of the solute boundary layer and the particle boundary layer, which only can be revealed from the initial transient stage of planar instability in directional freezing.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wang L,You J,Wang Z,Wang J,Lin Xdoi
10.1038/srep23358subject
Has Abstractpub_date
2016-03-21 00:00:00pages
23358issn
2045-2322pii
srep23358journal_volume
6pub_type
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