Quantitative scanning transmission electron microscopy for materials science: Imaging, diffraction, spectroscopy, and tomography

C Ophus - Annual Review of Materials Research, 2023 - annualreviews.org
Scanning transmission electron microscopy (STEM) is one of the most powerful
characterization tools in materials science research. Due to instrumentation developments …

The role of high-resolution transmission electron microscopy and aberration corrected scanning transmission electron microscopy in unraveling the structure-property …

L Bijelić, F Ruiz-Zepeda, N Hodnik - Inorganic chemistry frontiers, 2024 - pubs.rsc.org
Platinum-based fuel cell electrocatalysts are structured on a nano level in order to extend
their active surface area and maximize the utilization of precious and scarce platinum. Their …

Grain boundary engineering for efficient and durable electrocatalysis

X Geng, M Vega-Paredes, Z Wang, C Ophus… - Nature …, 2024 - nature.com
Grain boundaries in noble metal catalysts have been identified as critical sites for enhancing
catalytic activity in electrochemical reactions such as the oxygen reduction reaction …

Diameter-dependent phase selectivity in 1D-confined tungsten phosphides

G **, CD Multunas, JL Hart, MT Kiani… - Nature …, 2024 - nature.com
Topological materials confined in 1D can transform computing technologies, such as 1D
topological semimetals for nanoscale interconnects and 1D topological superconductors for …

Unsupervised machine learning and cepstral analysis with 4D-STEM for characterizing complex microstructures of metallic alloys

T Yoo, E Hershkovitz, Y Yang, F da Cruz Gallo… - npj Computational …, 2024 - nature.com
Four-dimensional scanning transmission electron microscopy, coupled with a wide array of
data analytics, has unveiled new insights into complex materials. Here, we introduce a …

Direct Measurement of the Thermal Expansion Coefficient of Epitaxial WSe2 by Four-Dimensional Scanning Transmission Electron Microscopy

TM Kucinski, R Dhall, BH Savitzky, C Ophus… - ACS …, 2024 - ACS Publications
Current reports of thermal expansion coefficients (TEC) of two-dimensional (2D) materials
show large discrepancies that span orders of magnitude. Determining the TEC of any 2D …

Disentangling multiple scattering with deep learning: application to strain map** from electron diffraction patterns

J Munshi, A Rakowski, BH Savitzky… - npj Computational …, 2022 - nature.com
A fast, robust pipeline for strain map** of crystalline materials is important for many
technological applications. Scanning electron nanodiffraction allows us to calculate strain …

From STEM to 4D STEM: Ultrafast diffraction map** with a hybrid-pixel detector

DG Stroppa, M Meffert, C Hoermann… - Microscopy …, 2023 - academic.oup.com
Abstract 4D scanning transmission electron microscope (STEM) techniques have been
increasingly featured among the electron microscopy characterization approaches, as they …

Cryogenic 4D-STEM analysis of an amorphous-crystalline polymer blend: Combined nanocrystalline and amorphous phase map**

J Donohue, SE Zeltmann, KC Bustillo, B Savitzky… - Iscience, 2022 - cell.com
Understanding and visualizing the heterogeneous structure of immiscible semicrystalline
polymer systems is critical for optimizing their morphology and microstructure. We …

Multimodal characterization of crystal structure and formation in rubrene thin films reveals erasure of orientational discontinuities

JA Tan, JT Dull, SE Zeltmann… - Advanced Functional …, 2023 - Wiley Online Library
Multimodal multiscale characterization provide opportunities to study organic
semiconducting thin films with multiple length scales, across multiple platforms, to elucidate …