Crack patterns in drying protein solution drops

Details Crack patterns in drying protein solution drops Crack patterns in drying protein solution drops

2004-02-09

arxiv.org/abs/cond-mat/0402258v1

European Physical Journal E 5 (2001) 599

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

A deposited drop of bovine serum albumin salt solution experiences both gelation and fracturation during evaporation. The cracks appearing at the edge of the gelling drop are regularly spaced, due to the competition between the evaporation-induced and relaxation-induced stress evolution. Subsequently, the mean crack spacing evolves in an unexpected way, being inversely proportional instead of proportional to the deposit thickness. This evolution has been ascribed to the change with time of the average shrinkage stress, the crack patterning being purely elastic instead of evaporation-controlled.

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