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J. Phys. Soc. Jpn. 74 (2005) pp. 1362-1365  |Next Article|  |Table of Contents|
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Imprinting Memory into Paste and Its Visualization as Crack Patterns in Drying Process

Akio Nakahara and Yousuke Matsuo

Laboratory of Physics, College of Science and Technology, Nihon University, Funabashi, Chiba 274-8501

(Received January 18, 2005; Accepted February 15, 2005)

In the drying process of a paste, we can imprint a memory into the paste that determines how it will be broken in the future. That is, if we vibrate the paste before it is dried, it remembers the direction of the initial external vibration, and the morphology of the resultant crack patterns is determined solely by the memory of this direction. The morphological phase diagram of crack patterns and the rheological measurement of the paste show that this memory effect is induced by the plasticity of the paste. ©2005 The Physical Society of Japan

KEYWORDS: memory, crack pattern, yield stress, plasticity, paste
URL: http://jpsj.ipap.jp/link?JPSJ/74/1362/
DOI: 10.1143/JPSJ.74.1362


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