Hydrogen bonding interactions of H2O and SiOH on a boroaluminosilicate glass corroded in aqueous solution (open access)

Hydrogen bonding interactions of H2O and SiOH on a boroaluminosilicate glass corroded in aqueous solution

This article simulates hydrous species (H2O and Si-OH) on nano-porous alteration layers (gels) formed on a boroaluminosilicate glass called International Simple Glass corroded in aqueous solutions at pH 7 and pH 9, and initially saturated with soluble silicon-containing species were analyzed using linear and non-linear vibrational spectroscopy in combination with molecular dynamics simulations. The simulation and experimental results obtained in this study indicate that the water mobility in the gel formed at pH 9 could be slower than that in the gel formed at pH 7, and as a result, the leaching rate at pH 9 is slower than that at pH 7.
Date: January 7, 2020
Creator: Ngo, Dien; Liu, Hongshen; Chen, Zhe; Huseyin, Kaya; Zimudzi, Tawanda J.; Gin, Stéphane et al.
Object Type: Article
System: The UNT Digital Library
Tomographic mapping of the nanoscale water-filled pore structure in corroded borosilicate glass (open access)

Tomographic mapping of the nanoscale water-filled pore structure in corroded borosilicate glass

This article applies cryo-based atom probe tomography to directly reveal the water-solid interface and hydrated corrosion layers making up the nanoscale porous structure of a corroded borosilicate glass in its native aqueous environment. The analysis includes morphology and compositional mapping of the inner gel/glass interface, isolation of a tomographic sub-volume of the tortuous water-filled gel, and comparison of the gel structure with simulations.
Date: March 18, 2020
Creator: Perea, Daniel E.; Schreiber, Daniel K.; Ryan, Joseph V.; Wirth, Mark G.; Deng, Lu; Lu, Xiaonan et al.
Object Type: Article
System: The UNT Digital Library
Computational Assessment of Thermokinetics and Associated Microstructural Evolution in Laser Powder Bed Fusion Manufacturing of Ti6Al4V Alloy (open access)

Computational Assessment of Thermokinetics and Associated Microstructural Evolution in Laser Powder Bed Fusion Manufacturing of Ti6Al4V Alloy

This article develops a three-dimensional thermokinetic model based on the finite element method to correlate with the microstructure evolved in additively manufactured Ti6Al4V alloy.
Date: May 5, 2020
Creator: Pantawane, Mangesh V.; Ho, Yee-Hsien; Joshi, Sameehan & Dahotre, Narendra B.
Object Type: Article
System: The UNT Digital Library
Correlating work hardening with co-activation of stacking fault strengthening and transformation in a high entropy alloy using in-situ neutron diffraction (open access)

Correlating work hardening with co-activation of stacking fault strengthening and transformation in a high entropy alloy using in-situ neutron diffraction

Article using in-situ neutron diffraction to correlate SF strengthening to work hardening behavior in a low SFE Fe40Mn20Cr15Co20Si5 (at%) high entropy alloy, SFE ~ 6.31 mJ m−2. Cooperative activation of multiple mechanisms was indicated by increases in SF strengthening and γ-f.c.c. → ε-h.c.p. transformation leading to a simultaneous increase in strength and ductility. The present study demonstrates the application of in-situ, neutron or X-ray, diffraction techniques to correlating SF strengthening to work hardening.
Date: December 17, 2020
Creator: Frank, M.; Nene, Saurabh S.; Chen, Y.; Gwalani, B.; Kautz, E. J.; Devaraj, A. et al.
Object Type: Article
System: The UNT Digital Library
Embedded Corrosion Sensing with ZnO-PVDF Sensor Textiles (open access)

Embedded Corrosion Sensing with ZnO-PVDF Sensor Textiles

Article investigating a non-conductive sensor textile as a viable solution for corrosion in underground and submerged steel pipes. The results offer a new option for sub-surface corrosion sensing using low cost, easily fabricated sensor textiles.
Date: May 28, 2020
Creator: Chowdhury, Tonoy; D'Souza, Nandika Anne, 1967-; Ho, Yee-Hsien; Dahotre, Narendra B. & Mahbub, Ifana
Object Type: Article
System: The UNT Digital Library
Development of Combinatorial Processing Techniques for Accelerated Discovery of Complex Concentrated Alloy (or Multi-Principal Element Alloys) for Structural Applications (open access)

Development of Combinatorial Processing Techniques for Accelerated Discovery of Complex Concentrated Alloy (or Multi-Principal Element Alloys) for Structural Applications

Data management plan for the research grant, "Development of Combinatorial Processing Techniques for Accelerated Discovery of Complex Concentrated Alloy (or Multi-Principal Element Alloys) for Structural Applications"
Date: 2022-05-15/2023-05-14
Creator: Banerjee, Rajarshi
Object Type: Text
System: The UNT Digital Library
Ex situ and in situ Investigation of the Thermomechanical Behavior of Shape Morphing Materials from Room Temperature to Ultra-High Temperatures (open access)

Ex situ and in situ Investigation of the Thermomechanical Behavior of Shape Morphing Materials from Room Temperature to Ultra-High Temperatures

Data management plan for the grant, "Ex situ and in situ Investigation of the Thermomechanical Behavior of Shape Morphing Materials from Room Temperature to Ultra-High Temperatures."
Date: 2023-09-15/2024-09-14
Creator: Young, Marcus L.
Object Type: Text
System: The UNT Digital Library
Editorial: Superlubricity across the scales (open access)

Editorial: Superlubricity across the scales

Article talks about how while the idea of frictionless surfaces and the associated implications of vanishing energy losses during mechanical motion have been part of science fiction culture, scientists in the real world work toward realizing this ambitious goal that was once thought to be unattainable. The overarching goal of the research topic titled “Superlubricity Across the Scales” is to provide a snapshot of the latest developments in this rapidly accelerating field of research.
Date: October 26, 2022
Creator: Baykara, Mehmet Z.; Berman, Diana & Rosenkranz, Andreas
Object Type: Article
System: The UNT Digital Library
CAN23-161, Hierarchically structured ISRU derived composites (open access)

CAN23-161, Hierarchically structured ISRU derived composites

Data management plan for the grant, "CAN23-161, Hierarchically structured ISRU derived composites."
Date: 2023-09-01/2024-08-31
Creator: Mishra, Rajiv
Object Type: Text
System: The UNT Digital Library
Stability and degradation in triple cation and methyl ammonium lead iodide perovskite solar cells mediated viaAu andAg electrodes (open access)

Stability and degradation in triple cation and methyl ammonium lead iodide perovskite solar cells mediated viaAu andAg electrodes

Article states that perovskite solar cells (PSCs), particularly based on the methyl ammonium lead iodide (MAPbI3) formulation, have been of intense interest for the past decade within the photovoltaics (PV) community, but their long-term stability under operational conditions and environmental storage are still prime challenges to be overcome towards their commercialization. The authors have conducted a comprehensive analysis on the impact of the electrode collector layer, specifically Ag and Au, on the degradation mechanism associated with the MAPbI3 and a triple cation absorber. The authors hypothesize the mechanism of degradation, arising from the Ag interaction with the absorber through the formation of AgI in the PSCs, leads to corrosion of the perovskite absorber, as opposed to the benign AuI when Au electrodes are used in the solar cell stack.
Date: September 3, 2022
Creator: Kakaraparthi, Kranthiraja; Parashar, Mritunjaya; Mehta, Ravindra K.; Aryal, Sujan; Temsal, Mahdi & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library
Mechanochemical Reconstruction Principles for Two-Dimensional Material Adaptation to Applied Stresses (open access)

Mechanochemical Reconstruction Principles for Two-Dimensional Material Adaptation to Applied Stresses

Data management plan for the grant, "Mechanochemical Reconstruction Principles for Two-Dimensional Material Adaptation to Applied Stresses." This grant focuses on understanding how 2D materials change their structure and function under loading and shear stresses. For this, we will investigate the fundamental origins of solid-state interactions, unraveling the processes occurring at contacting surfaces during sliding, why some materials show better stability than others, and how one can use these novel 2D materials for mitigating friction and wear and enabling superlubricity.
Date: 2023-10-01/2026-09-30
Creator: Berman, Diana
Object Type: Text
System: The UNT Digital Library
CAREER: Manufacturing of Mechanically Stable Nanoporous Ceramic Structures Via Selective Infiltration of Polymer Templates (open access)

CAREER: Manufacturing of Mechanically Stable Nanoporous Ceramic Structures Via Selective Infiltration of Polymer Templates

Data management plan for the grant, "CAREER: Manufacturing of Mechanically Stable Nanoporous Ceramic Structures Via Selective Infiltration of Polymer Templates." This Faculty Early Career Development (CAREER) grant from the National Science Foundation supports fundamental research to elucidate a new strategy of manufacturing nanoporous ceramic structures with controllable structure and composition and programmable mechanical stability. The specific goal of this research is to discover processing-structure-property relationships in ceramic coatings and heterostructures by providing fundamental insights on the mechanism of liquid phase swelling-based infiltration of spin-coated polymer templates with inorganic precursors and defining the rules that control the resulting structure and, thus, access to various materials surfaces and interfaces.
Date: 2021-03-01/2026-02-28
Creator: Berman, Diana
Object Type: Text
System: The UNT Digital Library
Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systems (open access)

Friction stir welding of SS 316 LN and Nitronic 50 jacket sections for application in superconducting fusion magnet systems

Article explores the possibility of using friction stir welding (FSW) to join jacket web sections of two nitrogen-containing stainless steels for housing internally cooled superconducting cables which are utilized to generate magnetic fields in tokamak type fusion reactor systems. It has been shown that the FSW fabricated SS 316 LN jackets possessed the required strength and magnetic properties critical to this application.
Date: July 16, 2022
Creator: Gaddam, Supreeth; Haridas, Ravi Sankar; Sanabria, Charlie; Tammana, Deepthi; Berman, Diana & Mishra, R. S.
Object Type: Article
System: The UNT Digital Library
Research Training Pathway for Underrepresented Minority Students in Advancing Materials and Manufacturing for Fusion Power (open access)

Research Training Pathway for Underrepresented Minority Students in Advancing Materials and Manufacturing for Fusion Power

Data management plan for the grant, "Research Training Pathway for Underrepresented Minority Students in Advancing Materials and Manufacturing for Fusion Power."
Date: 2023-09-01/2026-08-31
Creator: Vasudevan, Vijay K.
Object Type: Text
System: The UNT Digital Library
Protective Thermal Electro-Chromic Coatings (ProTECC) for Lunar Exploration (open access)

Protective Thermal Electro-Chromic Coatings (ProTECC) for Lunar Exploration

Data management plan for the grant, "Protective Thermal Electro-Chromic Coatings (ProTECC) for Lunar Exploration."
Date: 2023-08-21/2026-08-20
Creator: Zhang, Richard Z.
Object Type: Text
System: The UNT Digital Library
CAREER: Understanding the Role of Nanoprecipitates in Advanced Metastable Titanium Alloys (open access)

CAREER: Understanding the Role of Nanoprecipitates in Advanced Metastable Titanium Alloys

Data management plan for the grant, "CAREER: Understanding the Role of Nanoprecipitates in Advanced Metastable Titanium Alloys."
Date: 2023-10-01/2027-07-31
Creator: Zheng, Yufeng
Object Type: Text
System: The UNT Digital Library
Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing (open access)

Tuning the temperature range of superelastic Ni-Ti alloys for elastocaloric cooling via thermal processing

Article describes how caloric cooling enlisting solid-state refrigerants is potentially a promising eco-friendly alternative to conventional cooling based on vapor compression. Here, the authors have explored tuning the operation temperature range of Ni50.8Ti49.2 for elastocaloric cooling. In particular, they have studied the effect of thermal treatments (a.k.a. aging) on the transformation temperature, superelasticity, and elastocaloric effects of Ni50.8Ti49.2 shape memory alloy tubes.
Date: April 28, 2023
Creator: Yamazaki, Takahiro; Montagnoli, Andre L.; Young, Marcus L. & Takeuchi, Ichiro
Object Type: Article
System: The UNT Digital Library
Room and Elevated Temperature Sliding Friction and Wear Behavior of Al0.3CoFeCrNi and Al0.3CuFeCrNi2 High Entropy Alloys (open access)

Room and Elevated Temperature Sliding Friction and Wear Behavior of Al0.3CoFeCrNi and Al0.3CuFeCrNi2 High Entropy Alloys

Article discusses how, in this study, processing–structure–property relations were systematically investigated at room and elevated temperatures for two FCC Al0.3CoFeCrNi and Al0.3CuFeCrNi2 high-entropy alloys (HEAs), also known as complex concentrated alloys (CCAs), prepared by conventional arc-melting. It was determined that both alloys exhibit FCC single-phase solid solution structure. Micro-indentation and sliding wear tests were performed to study the hardness and tribological behavior and mechanisms at room and elevated temperatures.
Date: April 2, 2023
Creator: Kadhim, Dheyaa F.; Korcherla, Manindra V. & Scharf, Thomas W.
Object Type: Article
System: The UNT Digital Library
Collaborative Research: DMREF: AI-enabled Automated design of ultrastrong and ultraelastic metallic alloys (open access)

Collaborative Research: DMREF: AI-enabled Automated design of ultrastrong and ultraelastic metallic alloys

Data management plan for the grant, "Collaborative Research: DMREF: AI-enabled Automated design of ultrastrong and ultraelastic metallic alloys"
Date: 2024-01-15/2027-09-30
Creator: Zheng, Yufeng
Object Type: Text
System: The UNT Digital Library
Light Confinement in Twisted Single-Layer 2D+ Moiré Photonic Crystals and Bilayer Moiré Photonic Crystals (open access)

Light Confinement in Twisted Single-Layer 2D+ Moiré Photonic Crystals and Bilayer Moiré Photonic Crystals

Article reporting optical properties of twisted single-layer 2D+ moiré photonic crystals where there is a weak modulation in z direction, and bilayer moiré-overlapping-moiré photonic crystals. This study leads to a potential application of 2D+ moiré photonic crystal in future on-chip optoelectronic integration.
Date: December 25, 2023
Creator: Kamau, Steve; Hurley, Noah; Kaul, Anupama; Cui, Jingbiao & Lin, Yuankun
Object Type: Article
System: The UNT Digital Library
Tribocatalytically-active nickel/cobalt phosphorous films for universal protection in a hydrocarbon-rich environment (open access)

Tribocatalytically-active nickel/cobalt phosphorous films for universal protection in a hydrocarbon-rich environment

Article describes how high-contact stresses generated at the sliding interfaces during their relative movement provide a unique combination of local heating and shear- and load-induced compression conditions. The authors of the article employ the electrodeposition process to design a coating composed of a hard cobalt-phosphorous matrix with the inclusion of tribocatalytically-active nickel clusters.
Date: July 5, 2023
Creator: Shirani, Asghar; Al Sulaimi, Rawan; Macknojia, Ali Zayaan; Eskandari, Mohammad & Berman, Diana
Object Type: Article
System: The UNT Digital Library
MXene/graphene oxide nanocomposites for friction and wear reduction of rough steel surfaces (open access)

MXene/graphene oxide nanocomposites for friction and wear reduction of rough steel surfaces

Article describes how development of solid lubricant materials that render reliable performance in ambient conditions, are amenable to industrial size and design complexities, and work on engineered surfaces is reported. This report presents the holistic exploration and correlation of structure-property-processing pertaining to the advancement of solid lubrication science.
Date: July 8, 2023
Creator: Macknojia, Ali Zayaan; Ayyagari, Aditya; Shevchenko, Elena V. & Berman, Diana
Object Type: Article
System: The UNT Digital Library
Author Correction: MXene/graphene oxide nanocomposites for friction and wear reduction of rough steel surfaces (open access)

Author Correction: MXene/graphene oxide nanocomposites for friction and wear reduction of rough steel surfaces

Correction to the article points out an error in Figure 1e. The figure is corrected in this article.
Date: October 11, 2023
Creator: Macknojia, Ali Zayaan; Ayyagari, Aditya; Shevchenko, Elena V. & Berman, Diana
Object Type: Article
System: The UNT Digital Library
Ideal plasticity and shape memory of nanolamellar high-entropy alloys (open access)

Ideal plasticity and shape memory of nanolamellar high-entropy alloys

Article describes how understanding the relationship among elemental compositions, nanolamellar microstructures, and mechanical properties enables the rational design of high-entropy alloys (HEAs). In this article the authors construct nanolamellar Alx-CoCuFeNi HEAs with alternating high- and low-Al concentration layers and explore their mechanical properties using a combination of molecular dynamic simulation and density functional theory calculation.
Date: October 13, 2023
Creator: Chen, Shuai; Liu, Ping; Pei, Qingxiang; Yu, Zhi Gen; Aitken, Zachary H.; Li, Wanghui et al.
Object Type: Article
System: The UNT Digital Library