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Science - Marvelous Crystals

Zhang Qing, MIT Ph.D. candidate, co-founder of MIT microproject society
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Science - Marvelous Crystals

Time & Location

Mar 16, 2020, 8:30 PM
往期活动 Previous Event

About the Event

Interfacial instability leads to pattern formation. One typical interfacial instability is viscous fingering instability, which is induced by the displacement of a more viscous fluid by a less viscous fluid. Such instability leads to finger-like structures at the unstable interface. These fingers split repeatedly and then grow to be a typical type of pattern - dense branching growth. Instead, when we tune the property of the environment where the patterns form, the fingers can keep stable without tip splitting and form another type of pattern - dendritic growth. These two types of pattern formation are ubiquitous in nature. Branches of trees, lightning, or vessels in human lungs are dense branching growth, while snowflakes are a typical example of dendritic growth. The pattern selection and transition among different types of patterns in nature are open questions. 

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