Fig. 4: Ferroelastic domain switching in an exfoliated β’-In2Se3 flake.
From: Two-dimensional ferroelasticity in van der Waals β’-In2Se3
a–g Polarized-light images showing domain switching under the vertical uniaxial tensile strain. The colored arrows indicate the nanostripe or antiferroelectric polarization directions. h Domain area fraction of the A variant as a function of applied uniaxial tensile strain. The linear response under the intermediate strain (0.5% ≤ ε ≤ 1.1%) can be well described by the blue line with a slope of 1.35 as derived from a freestanding switching model presented in Supplementary Note 2.
