Machine learning in scanning transmission electron microscopy

SV Kalinin, C Ophus, PM Voyles, R Erni… - Nature Reviews …, 2022 - nature.com
Scanning transmission electron microscopy (STEM) has emerged as a uniquely powerful
tool for structural and functional imaging of materials on the atomic level. Driven by …

4D-STEM of beam-sensitive materials

KC Bustillo, SE Zeltmann, M Chen… - Accounts of chemical …, 2021 - ACS Publications
Conspectus Scanning electron nanobeam diffraction, or 4D-STEM (four-dimensional
scanning transmission electron microscopy), is a flexible and powerful approach to elucidate …

Cryoforged nanotwinned titanium with ultrahigh strength and ductility

S Zhao, R Zhang, Q Yu, J Ell, RO Ritchie, AM Minor - Science, 2021 - science.org
Nanostructured metals are usually strong because the ultrahigh density of internal
boundaries restricts the mean free path of dislocations. Usually, they are also more brittle …

py4DSTEM: A software package for four-dimensional scanning transmission electron microscopy data analysis

BH Savitzky, SE Zeltmann, LA Hughes… - Microscopy and …, 2021 - cambridge.org
Scanning transmission electron microscopy (STEM) allows for imaging, diffraction, and
spectroscopy of materials on length scales ranging from microns to atoms. By using a high …

One dimensional wormhole corrosion in metals

Y Yang, W Zhou, S Yin, SY Wang, Q Yu… - Nature …, 2023 - nature.com
Corrosion is a ubiquitous failure mode of materials. Often, the progression of localized
corrosion is accompanied by the evolution of porosity in materials previously reported to be …

Extreme mixing in nanoscale transition metal alloys

Y Yao, Z Huang, LA Hughes, J Gao, T Li, D Morris… - Matter, 2021 - cell.com
The ability to alloy different elements is critical for property tuning and materials discovery.
However, general alloying at the nanoscale remains extremely challenging due to strong …

High-fidelity ptychographic imaging of highly periodic structures enabled by vortex high harmonic beams

B Wang, NJ Brooks, PC Johnsen, NW Jenkins… - arXiv preprint arXiv …, 2023 - arxiv.org
Ptychographic Coherent Diffractive Imaging enables diffraction-limited imaging of nanoscale
structures at extreme ultraviolet and x-ray wavelengths, where high-quality image-forming …

Automated crystal orientation mapping 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 …

Contrast transfer and noise considerations in focused-probe electron ptychography

CM O'Leary, GT Martinez, E Liberti, MJ Humphry… - Ultramicroscopy, 2021 - Elsevier
Electron ptychography is a 4-D STEM phase-contrast imaging technique with applications to
light-element and beam-sensitive materials. Although the electron dose (electrons incident …

Rejuvenation as the origin of planar defects in the CrCoNi medium entropy alloy

Y Yang, S Yin, Q Yu, Y Zhu, J Ding, R Zhang… - Nature …, 2024 - nature.com
High or medium-entropy alloys (HEAs/MEAs) are multi-principal element alloys with equal
atomic elemental composition, some of which have shown record-breaking mechanical …