Fig. 1
From: Thermal crumpling of perforated two-dimensional sheets

Two different arrays of perforations. For clarity, the images show only a small section of the full membrane. We begin by considering a full triangulated sheet and then remove all the nodes in a radius R around its center. This central hole is then repeated periodically throughout the membrane. In the figure, the removed nodes are represented by blue dots (a: R = 1, b: R = 2). In the rest of the paper, we will consider patterns of perforations with R = 1, 2 and varying spacing between holes (see Supplementary Fig. 1 for a full description of all perforation patterns)