Lattice model for self-folding at the microscale T. S. A. N. Simões, H. P. M. Melo and N. A. M. Araújo Eur. Phys. J. E, 44 4 (2021) 46 Published online: 30 March 2021 DOI: 10.1140/epje/s10189-021-00056-3