Interface instability modes in freezing colloidal suspensions - revealed from onset of planar instability

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 is still 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. All the three instability modes come 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.

arXiv comment18pages, 7 figures

References in corpus (4)

• Freezing as a path to build complex composites
• Strong, Tough and Stiff Bioinspired Ceramics from Brittle Constituents
• In situ observation the interface undercooling of freezing colloidal suspensions with differential visualization method
• Interfacial undercooling in the solidification of colloidal suspensions-analyses with quantitative measurements

Cited by in corpus (4)

• Interfacial undercooling in the solidification of colloidal suspensions-analyses with quantitative measurements
• Single ice crystal growth with controlled orientation during directional freezing
• Heat flux balance description of unidirectional freezing and melting dynamics on a translational temperature gradient stage
• Thermodynamics of interface in the freezing of colloidal suspensions: from macroscale to the microscale