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.
ASJC Scopus subject areas
- Physics and Astronomy(all)