Piezoresponse force microscope image of the polarization state (phase in color and amplitude in grayscale) of a PbTiO₃ thin film bombarded with He²⁺.

From the article:

Interplay between Point and Extended Defects and Their Effects on Jerky Domain-Wall Motion in Ferroelectric Thin Films
Ralph Bulanadi, Kumara Cordero-Edwards, Philippe Tückmantel, Sahar Saremi, Giacomo Morpurgo, Qi Zhang, Lane W. Martin, Valanoor Nagarajan, and Patrycja Paruch
Phys. Rev. Lett. 133, 106801 (2024)

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