Hexagonal MoTe₂ with Amorphous BN Passivation Layer for Improved Oxidation Resistance and Endurance of 2D Field Effect Transistors (open access)

Hexagonal MoTe₂ with Amorphous BN Passivation Layer for Improved Oxidation Resistance and Endurance of 2D Field Effect Transistors

This article demonstrates the effectiveness of an a-BN capping layer in preserving few-layer MoTe₂ material quality and controlling its conductivity type at elevated temperatures in an atmospheric environment.
Date: June 6, 2018
Creator: Sirota, Benjamin; Glavin, Nicholas; Krylyuk, Sergiy; Davydov, Albert V. & Voevodin, Andrey A.
System: The UNT Digital Library
Effect of Substrate Support on Dynamic Graphene/Metal Electrical Contacts (open access)

Effect of Substrate Support on Dynamic Graphene/Metal Electrical Contacts

This article investigates the stability of dynamic electrical contacts at a graphene/metal interface using atomic force microscopy (AFM), under static conditions with variable normal loads and under sliding conditions with variable speeds.
Date: March 22, 2018
Creator: Lee, Jihyung; Hu, Xiaoli; Voevodin, Andrey A.; Martini, Ashlie & Berman, Diana
System: The UNT Digital Library
Work hardening in metastable high entropy alloys: a modified five-parameter model (open access)

Work hardening in metastable high entropy alloys: a modified five-parameter model

Article models work hardening response in TRIP HEAs under tensile deformation, which reflects the hardening due to synergistic activity of multiple deformation mechanisms, using a five-parameter work hardening model.
Date: April 19, 2022
Creator: Haridas, Ravi Sankar; Agrawal, Priyanka; Yadav, Surekha; Agrawal, Priyanshi; Gumaste, Anurag & Mishra, Rajiv
System: The UNT Digital Library
Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy (open access)

Microstructural Design for Improving Ductility of An Initially Brittle Refractory High Entropy Alloy

This article presents a novel approach to microstructural engineering of refractory high-entropy alloys (RHEAs) to form an "inverted" BCC+B2 microstructure.
Date: June 11, 2018
Creator: Soni, V.; Senkov, O. N.; Gwalani, B.; Miracle, D. B. & Banerjee, Rajarshi
System: The UNT Digital Library
Dynamic Shear Deformation of a Precipitation Hardened Al0.7CoCrFeNi Eutectic High-Entropy Alloy Using Hat-Shaped Specimen Geometry (open access)

Dynamic Shear Deformation of a Precipitation Hardened Al0.7CoCrFeNi Eutectic High-Entropy Alloy Using Hat-Shaped Specimen Geometry

The article reports on the shear deformation of a eutectic structured HEA and effect of precipitation on shear deformation, particularly Al₀.₇CoCrFeNi high-entropy alloy (HEA). A split-Hopkinson pressure bar (SHPB) was used to compress the hat-shaped specimens to study the local dynamic shear response of the alloy. The change in the width of shear bands with respect to precipitation and deformation rates was studied. The precipitation of L1₂ phase did not delay the formation of adiabatic shear bands (ASB) or affect the ASB width significantly, however, the deformed region around ASB, consisting of high density of twins in fcc phase, was reduced from 80 µm to 20 µm in the stronger precipitation strengthened condition.
Date: April 10, 2020
Creator: Gwalani, Bharat; Wang, Tianhao; Jagetia, Abhinav; Gangireddy, Sindhura; Muskeri, Saideep; Mukherjee, Sundeep et al.
System: The UNT Digital Library