3D Nanocrystallography and the Imperfect Molecular Lattice

N Vlahakis, J Holton, NK Sauter, P Ercius… - Annual review of …, 2024 - annualreviews.org
Crystallographic analysis relies on the scattering of quanta from arrays of atoms that
populate a repeating lattice. While large crystals built of lattices that appear ideal are sought …

Hydrogen-assisted decohesion associated with nanosized grain boundary κ-carbides in a high-Mn lightweight steel

MN Elkot, B Sun, X Zhou, D Ponge, D Raabe - Acta Materialia, 2022 - Elsevier
While age-hardened austenitic high-Mn and high-Al lightweight steels exhibit excellent
strength-ductility combinations, their properties are strongly degraded when mechanically …

Automated crystal orientation map** in py4DSTEM using sparse correlation matching

C Ophus, SE Zeltmann, A Bruefach… - Microscopy and …, 2022 - cambridge.org
Crystalline materials used in technological applications are often complex assemblies
composed of multiple phases and differently oriented grains. Robust identification of the …

Atomic motifs govern the decoration of grain boundaries by interstitial solutes

X Zhou, A Ahmadian, B Gault, C Ophus… - Nature …, 2023 - nature.com
Grain boundaries, the two-dimensional defects between differently oriented crystals, tend to
preferentially attract solutes for segregation. Solute segregation has a significant effect on …

[HTML][HTML] Free, flexible and fast: Orientation map** using the multi-core and GPU-accelerated template matching capabilities in the Python-based open source 4D …

N Cautaerts, P Crout, HW Ånes, E Prestat, J Jeong… - Ultramicroscopy, 2022 - Elsevier
This work presents the new template matching capabilities implemented in Pyxem, an open
source Python library for analyzing four-dimensional scanning transmission electron …

Local Epitaxial Templating Effects in Ferroelectric and Antiferroelectric ZrO2

K Chae, SF Lombardo, N Tasneem… - … Applied Materials & …, 2022 - ACS Publications
Nanoscale polycrystalline thin-film heterostructures are central to microelectronics, for
example, metals used as interconnects and high-K oxides used in dynamic random-access …

Improved ACOM pattern matching in 4D-STEM through adaptive sub-pixel peak detection and image reconstruction

N Folastre, J Cao, G Oney, S Park, A Jamali… - Scientific Reports, 2024 - nature.com
The technique known as 4D-STEM has recently emerged as a powerful tool for the local
characterization of crystalline structures in materials, such as cathode materials for Li-ion …

[HTML][HTML] Scanning precession electron diffraction data analysis approaches for phase map** of precipitates in aluminium alloys

E Thronsen, T Bergh, TI Thorsen, EF Christiansen… - Ultramicroscopy, 2024 - Elsevier
Map** the spatial distribution of crystal phases with nm-scale spatial resolution is an
important characterisation task in studies of multi-phase materials. One popular approach is …

Effect of pore formation on redox-driven phase transformation

X Zhou, Y Bai, AA El-Zoka, SH Kim, Y Ma… - Physical Review Letters, 2023 - APS
When solid-state redox-driven phase transformations are associated with mass loss,
vacancies are produced that develop into pores. These pores can influence the kinetics of …

[HTML][HTML] Microstructural and mechanical anisotropy in pressure-assisted sintered copper nanoparticles

L Du, K Liu, D Hu, O Bäcke, X Hu, X Ji, J Fan… - Acta Materialia, 2025 - Elsevier
The mechanical strength of sintered nanoparticles (NPs) limits their application in advanced
electronics packaging. In this study, we explore the anisotropy in the microstructure and …