Figure 12.

Simulation results and shape index comparison for an ordered collection of cells. In (a–c) the cell edges show wavy shapes and the cell shape indices are less than $p_{\alpha }~4.56$ , still not significant compared with (d) where the cell shape index is greater than $p_{\alpha }~4.56$ . (e) The black horizontal line represents shape index of the regular triangle. A transition point $p_{\alpha }~4.56$ is represented by the dashed grey vertical line.