A5071764477- Electronic and Structural Properties of Oxides
- Magnetic and transport properties of perovskites and related materials
- Semiconductor materials and devices
- Advanced Condensed Matter Physics
- Theoretical and Computational Physics
- Ferroelectric and Negative Capacitance Devices
- Topological Materials and Phenomena
- Iron-based superconductors research
- 2D Materials and Applications
- Physics of Superconductivity and Magnetism
- Healthcare Policy and Management
- Crystallization and Solubility Studies
- Scoliosis diagnosis and treatment
- Simulation Techniques and Applications
- Electron and X-Ray Spectroscopy Techniques
- Machine Learning in Materials Science
- Gas Sensing Nanomaterials and Sensors
- Child and Adolescent Health
- Pelvic and Acetabular Injuries
- Spinal Fractures and Fixation Techniques
- Primary Care and Health Outcomes
- Markov Chains and Monte Carlo Methods
Auburn University
2020-2025
Pacific Northwest National Laboratory
2022
Argonne National Laboratory
2022
University of Washington
2022
National Space Science and Technology Center
2021
Cornell University
2021
Utah Department of Health
1989
University of Utah
1984-1989
Thin film deposition is a fundamental technology for the discovery, optimization, and manufacturing of functional materials. Deposition by molecular beam epitaxy (MBE) typically employs reflection high-energy electron diffraction (RHEED) as real-time in situ probe growing film. However, state-of-the-art RHEED analysis during requires human observation. Here, we present an approach using machine learning (ML) methods to monitor, analyze, interpret images on-the-fly thin deposition. In...
Abstract Emergent behavior at oxide interfaces has driven research in complex films for the past 20 years. Interfaces have been engineered applications spintronics, topological quantum computing, and high-speed electronics with properties not observed bulk materials. Advances synthesis made growth of these possible, while X-ray photoelectron spectroscopy (XPS) studies often explained interfacial phenomena. This review discusses leading recent research, focusing on key results XPS that...
Perovskite oxides such as LaFeO$_3$ are a well-studied family of materials that possess wide range useful and novel properties. Successfully synthesizing perovskite oxide samples usually requires significant number growth attempts detailed film characterization on each sample to find the optimal window material. The most common real-time \textit{in situ} diagnostic technique available during molecular beam epitaxy (MBE) synthesis is reflection high-energy electron diffraction (RHEED)....
Machine learning (ML) with in situ diagnostics offers a transformative approach to accelerate, understand, and control thin film synthesis by uncovering relationships between conditions material properties. In this study, we demonstrate the application of deep predict stoichiometry Sr$_x$Ti$_{1-x}$O3 films using reflection high-energy electron diffraction images acquired during pulsed laser deposition. A gated convolutional neural network trained for regression Sr atomic fraction achieved...
Perovskite oxides such as LaFeO3 are a well-studied family of materials that possess wide range useful and novel properties. Successfully synthesizing perovskite oxide samples usually requires significant number growth attempts detailed film characterization on each sample to find the optimal window material. The most common real-time in situ diagnostic technique available during molecular beam epitaxy (MBE) synthesis is reflection high-energy electron diffraction (RHEED). Conventional use...
Machine learning (ML) with in-situ diagnostics offers a transformative approach to accelerate, understand, and control thin film synthesis by uncovering relationships between conditions material properties. In this study, we demonstrate the application of deep predict stoichiometry Sr2xTi2(1-x)O3 films using reflection high-energy electron diffraction images acquired during pulsed laser deposition. A gated convolutional neural network trained for regression Sr atomic fraction achieved...
4d transition metal oxides have emerged as promising materials for numerous applications including high mobility electronics. SrNbO3 is one such candidate material, serving a good donor material in interfacial oxide systems and exhibiting electron ultrathin films. However, its synthesis challenging due to the metastable nature of d1 Nb4+ cation limitations delivery refractory Nb. To date, films been grown primarily by pulsed laser deposition (PLD), but development means grow stabilize via...
We demonstrate how ordered arrangements of oxygen vacancies can be engineered during the growth superconducting La2CuO4 films by oxide molecular-beam epitaxy. These are seen using in situ reflection high-energy electron diffraction. Based on qualitative real-time observations, we propose a surface reconstruction mechanism emphasizing active role dopants and at film surface. Due to specific atomic arrangement induced dopant positions, characteristic “stripes” generated, they determine...
The utilization of preventive health care services prenatally and for children up to 3 years old was determined by mailed questionnaire. parents surveyed were randomly chosen from birth records provided the Utah Bureau Vital Records. "Adequate use services" defined as six prenatal visits a full-term pregnancy seven well-child during first life. Responses, received 219 (36.5%) parents, indicated only 1 percent did not utilize adequate care. Women made an average 11.3 their pregnancies; 83 saw...
Ternary chalcogenides such as the parkerites and shandites are a broad class of materials exhibiting rich diversity transport magnetic behavior well an array topological phases including Weyl Dirac nodes. However, they remain largely unexplored high-quality epitaxial thin films. Here, we report self-regulated growth films strong spin-orbit coupled superconductor Pd3Bi2Se2 on SrTiO3 by molecular beam epitaxy. Films found to grow in fashion, where, excess Se, temperature relative flux ratio Pd...
Perovskite oxides hetero-structures are host to a large number of interesting phenomena such as ferroelectricity and 2D-superconductivity. Ferroelectric perovskite have been significant interest due their possible use in MOSFETs FRAM. SrHfO$_3$ (SHO) is oxide with pseudo-cubic lattice parameter 4.1 $\mathring{A}$ that previous DFT calculations suggest can be stabilized ferroelectric P4mm phase, similar STO, when sufficient compressive strain. Additionally, it insulating, possesses band gap,...
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