“…For instance, experiments in this regime revealed unzipping of carbon nanotubes (CNTs) into nanoribbons [2]. While the high-strain-rate behavior of CNTs, either isolated [3,4] or in composites [5,6,7,8], has been studied for years, investigations on graphene mainly date from 2014 [9,10,11,12,13,14,15]. Of particular interest is the study by Lee et al [9], in which silica spheres were shot at multilayered graphene sheets.…”