Extended Data Fig. 7: Twinning-induced superelasticity in GeS along the zigzag direction.
From: Reversible shuffle twinning yields anisotropic tensile superelasticity in ceramic GeSe
In-situ TEM images of the GeS sample during strain loading (a-c) and unloading (d-f) via the PTP method. The yellow arrows highlight the stripy domains formed under strain. One can clearly observe the generation and disappearance of the stripy domain in the GeS ceramic crystal during strain loading and unloading. Such stripy domains are also found to form along the <110> direction. This result indicates that the shuffle twinning mechanism can serve as a general mechanism to induce superelasticity in those ceramic crystals with similar crystal structures.
