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Modified Band Alignment Method to Obtain Hybrid Functional Accuracy from Standard DFT: Application to Defects in Highly Mismatched III-V:Bi Alloys
Maciej P. Polak, Robert Kudrawiec, Ryan Jacobs +2
This paper provides an accurate theoretical defect energy database for pure and Bi-containing III-V (III-V:Bi) materials and investigates efficient methods for high-throughput defe…
Physics-based Model for Nonuniform Thermionic Electron Emission from Polycrystalline Cathodes
Dongzheng Chen, Ryan Jacobs, John Petillo +4
Experimental observations of thermionic electron emission demonstrate a smooth transition between TL and FSCL regions of the emitted-current-density-versus-temperature (J-T) (Miram…
Performance, Successes and Limitations of Deep Learning Semantic Segmentation of Multiple Defects in Transmission Electron Micrographs
Ryan Jacobs, Mingren Shen, Yuhan Liu +10
In this work, we perform semantic segmentation of multiple defect types in electron microscopy images of irradiated FeCrAl alloys using a deep learning Mask Regional Convolutional…
Molecular Dynamic Characteristic Temperatures for Predicting Metallic Glass Forming Ability
Lane E. Schultz, Benjamin Afflerbach, Izabela Szlufarska +1
We explore the use of characteristic temperatures derived from molecular dynamics to predict aspects of metallic Glass Forming Ability (GFA). Temperatures derived from cooling curv…
Discovery and Engineering of Low Work Function Perovskite Materials
Tianyu Ma, Ryan Jacobs, John Booske +1
Materials with low work functions are critical for an array of applications requiring the facile removal or efficient transport of electrons through a device. Perovskite oxides are…
Work Function Trends and New Low Work Function Boride and Nitride Materials for Electron Emission Applications
Tianyu Ma, Ryan Jacobs, John Booske +1
LaB6 has been used as a commercial electron emitter for decades. Despite the large number of studies on the work function of LaB6, there is no comprehensive understanding of work f…