Volume 118, Number 5, June 2017
|Number of page(s)||6|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||11 August 2017|
Surface creasing of soft elastic continua as a Kosterlitz-Thouless transition
Soft Matter Program and Department of Physics, Syracuse University - Syracuse, NY 13244, USA
Received: 9 May 2017
Accepted: 20 July 2017
Harnessing a model from composite materials science, we show how microscopic crease and anticrease features may arise as quasi-particle excitations on the surface of a soft elastic material, where disorder and drive-induced strain fluctuations play the role of thermal fluctuations. These features appear above a critical strain fluctuation at which zero-length crease-anticrease pairs unbind, analogous to vortex unbinding in the Kosterlitz-Thouless transition. Finite-length creases can be described in the same framework. Our predictions for crease surface profiles and onset strain agree with previous experiments, and further tests are proposed.
PACS: 68.35.Rh – Phase transitions and critical phenomena / 46.05.+b – General theory of continuum mechanics of solids / 87.15.Zg – Phase transitions
© EPLA, 2017
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