Supporting simulation data for "Dertli, Denis; Speck, Thomas (2026). Response to dynamic shape changes in suspensions of hard rectangles. Soft Matter." (https://doi.org/10.1039/D6SM00037A). It includes data of the manuscript and supplemental information.

Motivated by recent DNA origami experiments, we study in our work the structure and dynamics of suspensions of hard squares in response to an elongation into a rectangle. Performing dynamic hard-particle Monte Carlo simulations at constant volume and employing two protocols, we numerically analyze the collective diffusion and ordering during the shape change and the subsequent relaxation towards the new equilibrium state. We study a two-dimensional system with approximately 1300 particles with fixed area at constant packing fraction and periodic boundary conditions. The HPMC simulations were performed utilizing Hoomd-blue (open source code at https://github.com/glotzerlab/hoomd-blue/releases/tag/v4.8.2 https://github.com/glotzerlab/hoomd-blue/releases/tag/v4.8.2). Further details and an interpretation of our findings are explained in our related publication (https://doi.org/10.1039/D6SM00037A). The content and data structure are explained in the corresponding "README.txt", where we also list the references for the simulations (for a complete list of all references of the entire study, please see the list of references in our related publication (https://doi.org/10.1039/D6SM00037A)).

Hoomd-blue, 4.8.2 (https://github.com/glotzerlab/hoomd-blue/releases/tag/v4.8.2)

freud, 3.1.0 (https://github.com/glotzerlab/freud/releases/tag/v3.1.0)