Shape multistability in flexible tubular crystals through interactions of mobile dislocations [Physics]

We study avenues to shape multistability and shape morphing in flexible crystalline membranes of cylindrical topology, enabled by glide mobility of dislocations. Using computational modeling, we obtain states of mechanical equilibrium presenting a wide variety of tubular crystal deformation geometries, due to an interplay of effective defect interactions with out-of-tangent-plane...

Source: Proceedings of the National Academy of Sciences - February 2, 2022 Category: Science Authors: Andrei Zakharov, Daniel A. Beller Tags: Physics Physical Sciences Source Type: research