Fig. 7
From: Thermal crumpling of perforated two-dimensional sheets

Crumpling of a thin frame. The top row shows the initial (T = 0) configuration for frames of L = 100a and W = 24a, 12a, 6a, 3a (left to right). The bottom row shows thermalized configurations (for \(\tilde \kappa = 1.25\,kT\) and \(\epsilon \) = 1800 kT/a 2) for each of these geometries, showing a clear crumpling as the frame width W is reduced. Points A and B of the leftmost frame are used to define an order parameter for crumpling in the text