30 citations · 104 across the 27 of their papers we have counts for
28 papers
Real-space overlap is not enough: ambiguity in nanobeam iterative ptychography
Stephanie M. Ribet, Mohsen Danaie, Willem P. M. de Kleijne +5
High-resolution iterative ptychography typically relies on a well-aligned, high-convergence-angle electron probe. Here we explore whether it can instead be performed at small conve…
Nanocrystal Geometry Governs Phase Transformation Pathways in Palladium Hydride
Daewon Lee, Sam Oaks-Leaf, Hyeonjong Ma +14
Pathways and structural dynamics of phase transformations impact performance of materials in energy and information storage technologies. Palladium hydride () nanoc…
Unsupervised segmentation and clustering workflow for efficient processing of 4D-STEM and 5D-STEM data
Serin Lee, Stephanie M. Ribet, Arthur R. C. McCray +3
Four-dimensional scanning transmission electron microscopy (4D-STEM) enables mapping of diffraction information with nanometer-scale spatial resolution, offering detailed insight i…
TEM Agent: enhancing transmission electron microscopy (TEM) with modern AI tools
Morgan K. Wall, Alexander J. Pattison, Edward S. Barnard +2
Recent improvements in large language models (LLMs) have had a dramatic effect on capabilities and productivity across many disciplines involving critical thinking and writing. The…
Deep generative priors for robust and efficient electron ptychography
Arthur R. C. McCray, Stephanie M. Ribet, Georgios Varnavides +1
Electron ptychography enables dose-efficient atomic-resolution imaging, but conventional reconstruction algorithms suffer from noise sensitivity, slow convergence, and extensive ma…
New avenues for characterizing individual mineralized collagen fibrils with transmission electron microscopy
Tatiana Kochetkova, Stephanie M. Ribet, Lilian M. Vogl +5
Bone serves as a remarkable example of nature's architectured material with its unique blend of strength and toughness, all at a lightweight design. Given the hierarchical nature o…
Programmable Beam Control for Electron Energy-Loss Spectroscopy and Ptychography
Mariana Palos, Liam Spillane, Geri Topore +5
Programmable electron-beam scanning offers new opportunities to improve dose efficiency and suppress scan-induced artifacts in scanning transmission electron microscopy. Here, we s…
High-current p-type transistors from precursor-engineered synthetic monolayer WSe
Anh Tuan Hoang, Kathryn Neilson, Kaikui Xu +11
Monolayer tungsten diselenide (WSe) is a leading candidate for nanoscale complementary logic. However, high defect densities introduced during thin-film growth and device fabri…
Beyond Contrast Transfer: Spectral SNR as a Dose-Aware Metric for STEM Phase Retrieval
Georgios Varnavides, Julie Marie Bekkevold, Stephanie M Ribet +3
The contrast transfer function (CTF) is widely used to evaluate phase retrieval methods in scanning transmission electron microscopy (STEM), including center-of-mass imaging, paral…
Relaxing Direct Ptychography Sampling Requirements via Parallax Imaging Insights
Georgios Varnavides, Julie Marie Bekkevold, Stephanie M Ribet +3
Direct ptychography enables the retrieval of information encoded in the phase of an electron wave passing through a thin sample by deconvolving the interference effects of a conver…
Quantitative structure determination from experimental four-dimensional scanning transmission electron microscopy via the scattering matrix
Emmanuel W. C. Terzoudis-Lumsden, Alireza Sadri, Matthew Weyland +6
Considerable inroads have recently been made on algorithms to determine the sample potential from four-dimensional scanning transmission electron microscopy data from thick samples…
Multi-angle precession electron diffraction (MAPED): a versatile approach to 4D-STEM precession
Stephanie M. Ribet, Rohan Dhall, Colin Ophus +1
Precession of a converged beam during acquisition of a 4D-STEM dataset improves strain, orientation, and phase mapping accuracy by averaging over continuous angles of illumination.…
Fabrication and characterization of boron-terminated tetravacancies in monolayer hBN using STEM, EELS and electron ptychography
Dana O. Byrne, Stephanie M. Ribet, Demie Kepaptsoglou +3
Tetravacancies in monolayer hexagonal boron nitride (hBN) with consistent edge termination (boron or nitrogen) form triangular nanopores with electrostatic potentials that can be l…
PhaseT3M: 3D Imaging at 1.6 Å Resolution via Electron Cryo-Tomography with Nonlinear Phase Retrieval
Juhyeok Lee, Samuel W. Song, Min Gee Cho +5
Electron cryo-tomography (cryo-ET) enables 3D imaging of complex, radiation-sensitive structures with molecular detail. However, image contrast from the interference of scattered e…
Mapping strain and structural heterogeneities around bubbles in amorphous ionically conductive BiO
Ellis Rae Kennedy, Stephanie M. Ribet, Ian S. Winter +5
While amorphous materials are often approximated to have a statistically homogeneous atomic structure, they frequently exhibit localized structural heterogeneity that challenges si…
Neutral but Impactful: Gallium Cluster-Induced Nanopores from Beam-Blanked Gallium Ion Sources
Dana O. Byrne, Stephanie M. Ribet, Karen C. Bustillo +2
Neutral atoms emitted from liquid metal ion sources are an often-overlooked source of contamination and damage in focused ion beam microscopy. Beyond ions and single atoms, these s…
BEACON -- Automated Aberration Correction for Scanning Transmission Electron Microscopy using Bayesian Optimization
Alexander J. Pattison, Stephanie M. Ribet, Marcus M. Noack +6
Aberration correction is an important aspect of modern high-resolution scanning transmission electron microscopy. Most methods of aligning aberration correctors require specialized…
Streaming Large-Scale Electron Microscopy Data to a Supercomputing Facility
Samuel S. Welborn, Chris Harris, Stephanie M. Ribet +4
Data management is a critical component of modern experimental workflows. As data generation rates increase, transferring data from acquisition servers to processing servers via co…
Tailored topotactic chemistry unlocks heterostructures of magnetic intercalation compounds
Samra Husremović, Oscar Gonzalez, Berit H. Goodge +15
The construction of thin film heterostructures has been a widely successful archetype for fabricating materials with emergent physical properties. This strategy is of particular im…
Random Forest Prediction of Crystal Structure from Electron Diffraction Patterns Incorporating Multiple Scattering
Samuel P. Gleason, Alexander Rakowski, Stephanie M. Ribet +5
Diffraction is the most common method to solve for unknown or partially known crystal structures. However, it remains a challenge to determine the crystal structure of a new materi…
Formation and Microwave Losses of Hydrides in Superconducting Niobium Thin Films Resulting from Fluoride Chemical Processing
Carlos G. Torres-Castanedo, Dominic P. Goronzy, Thang Pham +18
Superconducting Nb thin films have recently attracted significant attention due to their utility for quantum information technologies. In the processing of Nb thin films, fluoride-…
Uncovering the Three-Dimensional Structure of Upconverting Core-Shell Nanoparticles with Multislice Electron Ptychography
Stephanie M. Ribet, Georgios Varnavides, Cassio C. S. Pedroso +4
In photon upconverting core-shell nanoparticles, structure strongly dictates performance. Conventional imaging in scanning transmission electron microscopy has sufficient resolutio…
Iterative Phase Retrieval Algorithms for Scanning Transmission Electron Microscopy
Georgios Varnavides, Stephanie M. Ribet, Steven E. Zeltmann +7
Scanning transmission electron microscopy (STEM) has been extensively used for imaging complex materials down to atomic resolution. The most commonly employed STEM modality, annula…
Design of Electrostatic Aberration Correctors for Scanning Transmission Electron Microscopy
Stephanie M. Ribet, Steven E. Zeltmann, Karen C. Bustillo +6
In a scanning transmission electron microscope (STEM), producing a high-resolution image generally requires an electron beam focused to the smallest point possible. However, the ma…