Transition in the pattern of cracks resulting from memory effects in paste

Details Transition in the pattern of cracks resulting from memory effects in paste Transition in the pattern of cracks resulting from memory effects in paste

2006-06-16

arxiv.org/abs/cond-mat/0606446v3

Phys. Rev. E 74, 045102(R) (2006)

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 6 figures

Scientific paper

10.1103/PhysRevE.74.045102

Experiments involving vibrating pastes before drying were performed for the purposes of controlling the crack patterns that appear in the drying process. These experiments revealed a transition in the direction of lamellar cracks from perpendicular to parallel when compared with the direction of the initial external vibration as the solid volume fraction of the paste is decreased. This result suggests a transition in the "memory" in paste, which is visually represented as morphological changes in the crack pattern. Given that the memory in paste represents the flow pattern induced by the initial external vibration, it should then be possible to control and design various crack patterns, such as cellular, lamellar, radial, ring, spiral, and others.

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