J. M. Rickman
YOU?
Author Swipe
View article: Role of evolving template on the transformation kinetics and microstructure of a product‐phase entropy‐stabilized oxide
Role of evolving template on the transformation kinetics and microstructure of a product‐phase entropy‐stabilized oxide Open
We investigate the role of CoTiO 3 ‐TiO 2 template geometry on the microstructural evolution and growth kinetics associated with the formation of a product phase, CoTi 2 O 5 , in this reaction–diffusion system. For this purpose, the CoTi 2…
View article: A comparative analysis of YOLOv8 and U-Net image segmentation approaches for transmission electron micrographs of polycrystalline thin films
A comparative analysis of YOLOv8 and U-Net image segmentation approaches for transmission electron micrographs of polycrystalline thin films Open
Metallic thin films offer a platform to experimentally study the dynamics of microstructural evolution, but the required transmission electron microscopy (TEM)-based imaging generates complex images that are challenging to segment and quan…
View article: Using Nearest-Neighbor Distributions to Quantify Machine Learning of Materials’ Microstructures
Using Nearest-Neighbor Distributions to Quantify Machine Learning of Materials’ Microstructures Open
Machine learning strategies for the semantic segmentation of materials’ micrographs, such as U-Net, have been employed in recent years to enable the automated identification of grain-boundary networks in polycrystals. For example, most rec…
View article: Learning to predict rare events: the case of abnormal grain growth
Learning to predict rare events: the case of abnormal grain growth Open
Abnormal grain growth (AGG) in polycrystalline microstructures, characterized by the rapid and disproportionate enlargement of a few “abnormal” grains relative to their surroundings, can lead to dramatic, often deleterious changes in the m…
View article: Evolving information complexity of coarsening materials microstructures
Evolving information complexity of coarsening materials microstructures Open
The temporal evolution of microstructural features in metals and ceramics has been the subject of intense investigation over many years because deviations from normal grain growth behavior are ubiquitous and strongly dictate observed mecha…
View article: Automated Grain Boundary Detection for Bright-Field Transmission Electron Microscopy Images via U-Net
Automated Grain Boundary Detection for Bright-Field Transmission Electron Microscopy Images via U-Net Open
Quantification of microstructures is crucial for understanding processing–structure and structure–property relationships in polycrystalline materials. Delineating grain boundaries in bright-field transmission electron micrographs, however,…
View article: Pseudo‐single crystal growth of the entropy‐stabilized compound CoTi <sub>2</sub> O <sub>5</sub> : Microstructural evolution and kinetics
Pseudo‐single crystal growth of the entropy‐stabilized compound CoTi <sub>2</sub> O <sub>5</sub> : Microstructural evolution and kinetics Open
The solid‐state transformation behavior of cobalt dititanate (CoTi 2 O 5 ) has been studied at different temperatures. The starting structure consisted of a duplex (1:1 molar) mixture of CoTiO 3 and TiO 2 grains. A seed layer of CoTi 2 O 5…
View article: Point process microstructural model of metallic thin films with implications for coarsening
Point process microstructural model of metallic thin films with implications for coarsening Open
We develop a thin-film microstructural model that represents structural markers (i.e., triple junctions in the two-dimensional projections of the structure of films with columnar grains) in terms of a stochastic, marked point process and t…
View article: Data‐driven glass/ceramic science research: Insights from the glass and ceramic and data science/informatics communities
Data‐driven glass/ceramic science research: Insights from the glass and ceramic and data science/informatics communities Open
Data‐driven science and technology have helped achieve meaningful technological advancements in areas such as materials/drug discovery and health care, but efforts to apply high‐end data science algorithms to the areas of glass and ceramic…
View article: Data analytics and parallel-coordinate materials property charts
Data analytics and parallel-coordinate materials property charts Open
It is often advantageous to display material properties relationships in the form of charts that highlight important correlations and thereby enhance our understanding of materials behavior and facilitate materials selection. Unfortunately…
View article: Thermal transport across symmetric tilt grain boundaries in <i>β</i>-SiC: Effect of dopants and temperature
Thermal transport across symmetric tilt grain boundaries in <i>β</i>-SiC: Effect of dopants and temperature Open
The Kapitza resistance at a segregated, low-angle symmetric tilt grain boundary in β-SiC is investigated using non-equilibrium molecular dynamics simulation. In particular, we assess the role of compositional and thermal disorder on the bo…
View article: Impact of lattice rotation on dislocation motion
Impact of lattice rotation on dislocation motion Open
We introduce a phenomenological theory of dislocation motion appropriate for\ntwo dimensional lattices. A coarse grained description is proposed that\ninvolves as primitive variables local lattice rotation and Burgers vector\ndensities alo…