Fig. 6: PFM images and plasticity of PEA-TFMS.
From: Mechanically deformable organic ferroelectric crystal with plasticity optimized by fluorination

a–d Morphology (a), height (b), amplitude (c) and phase (d) images of straight PEA-TFMS crystal visualized by PFM. e–h Morphology (e), height (f), amplitude (g) and phase (h) images of bent PEA-TFMS crystal visualized by PFM. The region in solid black boxes in (a and e represents the crystal morphology observed during PFM testing. The region in dashed red boxes indicates bending deformation occurs. i–k PEA-TFMS exhibit plasticity and can be fitted into the finger joint. The PEA-TFMS crystals are in the red dashed boxes. l Schematic diagram of the mechanism for the plastic bending process of PEA-TFMS.