Strained Ferroelectric Material Piezoresponse Force Microscopy Images. Click image for more info.

Phase (left) and amplitude (right) piezoresponse force microscopy images for the six sample variants. (a),(b) Vertical scan of single-layer PbZr0.2Ti0.8O3; (c),(d) vertical scan of single-layer PbZr0.8Ti0.2O3;
(e),(f) vertical scan of an up-bilayer; (g),(h) lateral scan of a down-bilayer; (i), (j) vertical scan of an up-graded heterostructure; (k),(l) lateral scan of a down-graded heteorstructure.

Image Credit: University of Illinois at Urbana-Champaign.

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