Author

C. Kübel

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Open access Aug 2026

Overcoming Imaging Limitations: 4D‐STEM Pair Distribution Function for Resolving Structure of Supported Pt55 and Pt200 Clusters

Metallic clusters in the 2–200 atom range exhibit exceptional functional properties arising from their large fraction of under‐coordinated surface sites and quantum size effects. However, structural characterization of these clusters is challenging due to the absence of well‐defined periodicity and long‐range crystal s...

A. R. Lakshmi Nilayam, Ramin Shadkam, Sang-Jun Kang et al. · Small Methods · 0 citations

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. · Small · 0 citations