124 citations · 284 across the 16 of their papers we have counts for
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Atomic Level Strain Induced by Static and Dynamic Oxygen Vacancies on Reducible Oxide Surfaces
Piyush Haluai, Tara M. Boland, Ethan L. Lawrence +1
Surface strain often controls properties of the material including charge transport and chemical reactivity. Localized surface strain is measured with atomic resolution on (111) ce…
The role of surface spin polarization on ceria-supported Pt nanoparticles
Byungkyun Kang, Joshua L. Vincent, Peter A. Crozier +1
In this work, we employ first-principles simulations to investigate the spin polarization of CeO-(111) surface and its impact on interactions between a ceria support and Pt nan…
An Light Illumination System for an Aberration-Corrected Environmental Transmission Electron Microscope
Qianlang Liu, Barnaby D. A. Levin, Diane M. Haiber +2
In this work, an optic fiber based illumination system integrated into an aberration-corrected environmental transmission electron microscope (ETEM) is designed,…
Fluxional Behavior at the Atomic Level and its Impact on Activity: CO Oxidation over CeO-supported Pt Catalysts
Joshua L. Vincent, Peter A. Crozier
Reducible oxides are widely used catalyst supports that can increase oxidation reaction rates by transferring their lattice oxygen at the metal-support interface. The interfacial o…
Developing and Evaluating Deep Neural Network-based Denoising for Nanoparticle TEM Images with Ultra-low Signal-to-Noise
Joshua L. Vincent, Ramon Manzorro, Sreyas Mohan +6
A deep convolutional neural network has been developed to denoise atomic-resolution TEM image datasets of nanoparticles acquired using direct electron counting detectors, for appli…
Simultaneous excitation of phonons at the center and boundaries of Brillouin zones with high energy electron beams
Kartik Venkatraman, Peter A. Crozier
High energy electron beams can now be routinely focused to 1-2 Å and offer the ability to obtain vibrational information from materials using monochromated electron energy-loss spe…
Impact of Aliovalent Alkaline-Earth Metal Solutes on Ceria Grain Boundaries: A Density Functional Theory Study
Tara M. Boland, Peter Rez, Peter A. Crozier +1
Ceria has proven to be an excellent ion-transport and ion-exchange material when used in polycrystalline form and with a high-concentration of aliovalent doped cations. Despite its…
Chemical Kinetics for Operando Electron Microscopy of Catalysts: 3D Modeling of Gas and Temperature Distributions During Catalytic Reactions
Joshua L. Vincent, Jarod W. Vance, Jayse T. Langdon +2
environmental transmission electron microscopy (ETEM) is a powerful tool for observing structural modifications taking place in heterogeneous catalysts under rea…
Tracking the Picoscale Spatial Motion of Atomic Columns During Dynamic Structural Change
Barnaby D. A. Levin, Ethan L. Lawrence, Peter A. Crozier
In many materials systems, such as catalytic nanoparticles, the ability to characterize dynamic atomic structural changes is important for developing a more fundamental understandi…
Vibrational Spectroscopy at Atomic Resolution with Electron Impact Scattering
Kartik Venkatraman, Barnaby D. A. Levin, Katia March +2
Atomic vibrations control all thermally activated processes in materials including diffusion, heat transport, phase transformations, and surface chemistry. Recent developments in m…