Open access
Sep 2026
Precise Nanoscale Mapping of Electric Fields Across Random Grain Boundaries in Polycrystalline Oxides Using Precession-Assisted 4D-STEM.
Space charge layers (SCLs) at grain boundaries play a crucial role in modulating electric fields and thereby influence functional properties of materials. However, experimental analysis of these localized electric fields and the corresponding charge distribution remains challenging. Conventional center-of-mass (CoM) an...
Sang-Jun Kang, Hyeyoung Cho, Maximilian Töllner et al.
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