Extended Data Fig. 4: In situ observation of superelastic behavior in GeSe along the armchair direction.
From: Reversible shuffle twinning yields anisotropic tensile superelasticity in ceramic GeSe
HRTEM images of a GeSe sample (Sample G) under uniaxial strain along the zigzag direction during strain loading (a) and during unloading process (b) via the PTP method. The red dashed lines mark out the twin domain, which exhibits increases and decreases in width during strain loading and unloading, respectively. This observation of strain-dependent domain dynamics further confirms the superelastic behavior of GeSe. The side view also reveals that superelastic behavior occurs throughout all the layers of the GeSe sample.
