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Effect of pressure quenching on the structures and properties of borosilicate glasses: Insights from molecular dynamics simulations (open access)

Effect of pressure quenching on the structures and properties of borosilicate glasses: Insights from molecular dynamics simulations

Article describes how processes including hot compression, cold compression and subsequent annealing on the structures and properties are investigated and compared. They found that applying pressure up to 10 GPa at the glass transition temperature led to permanent densifications and a dramatic increase of elastic moduli by 90%, while thermal annealing reversed the increase and applying pressure at ambient temperature did not increase the modulus.
Date: August 23, 2022
Creator: Ren, Mengguo & Du, Jincheng
Object Type: Article
System: The UNT Digital Library
Methylammonium Lead Tri-Iodide Perovskite Solar Cells with Varying Equimolar Concentrations of Perovskite Precursors (open access)

Methylammonium Lead Tri-Iodide Perovskite Solar Cells with Varying Equimolar Concentrations of Perovskite Precursors

Article conducting a systematic study to tune the equimolar precursor ratio of the organic halide (methylammonium iodide; MAI) and metal halide (lead iodide; PbI2) in a fixed solvent mixture of N,N-dimethylformamide (DMF):dimethylsulfoxide (DMSO).
Date: December 9, 2021
Creator: Parashar, Mritunjaya & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library
Preparation of Surface-Modified Nanocellulose from Sugarcane Bagasse by Concurrent Oxalic Acid-Catalyzed Reactions (open access)

Preparation of Surface-Modified Nanocellulose from Sugarcane Bagasse by Concurrent Oxalic Acid-Catalyzed Reactions

Article presenting research where concurrent oxalic acid-catalyzed reactions, including cellulose hydrolysis and esterification of the hydrolyzed cellulose, were performed to prepare the nanocellulose from sugarcane bagasse.
Date: September 1, 2020
Creator: Brostow, Witold, 1934-; Sriruangrungkamol, Arisara; Wongjaiyen, Thipsirin & Chonkaew, Wunpen
Object Type: Article
System: The UNT Digital Library
Light–matter interactions in two-dimensional layered tungsten diselenide for gauging evolution of phonon dynamics (open access)

Light–matter interactions in two-dimensional layered tungsten diselenide for gauging evolution of phonon dynamics

Article exploring phonon dynamics in mechanically exfoliated two-dimensional WSe₂ using temperature-dependent and laser-power-dependent Raman and photoluminescence (PL) spectroscopy. The work reported sheds fundamental insights into the evolution of phonon dynamics in WSe₂ and should help pave the way for designing high-performance electronic, optoelectronic and thermoelectric devices in the future.
Date: May 12, 2020
Creator: Bandyopadhyay, Avra S.; Biswas, Chandan & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library
In-vitro biomineralization and biocompatibility of friction stir additively manufactured AZ31B magnesium alloy-hydroxyapatite composites (open access)

In-vitro biomineralization and biocompatibility of friction stir additively manufactured AZ31B magnesium alloy-hydroxyapatite composites

Article presents research where friction stir additive manufacturing technique was employed to fabricate AZ31B magnesium-hydroxyapatite composite. The study aims to evaluate effect of hydroxyapatite (HA, Ca₁₀(PO₄)₆OH₂), a ceramic similar to natural bone, into AZ31B Mg alloy matrix on biomineralization and biocompatibility.
Date: June 30, 2020
Creator: Ho, Yee-Hsien; Man, Kun; Joshi, Sameehan; Pantawane, Mangesh V.; Wu, Tso-Chang; Yang, Yong et al.
Object Type: Article
System: The UNT Digital Library
Collaborative Research: Combined Tribological and Bactericidal Effect of Bioinjectable Nanodiamonds on Biological Joints (open access)

Collaborative Research: Combined Tribological and Bactericidal Effect of Bioinjectable Nanodiamonds on Biological Joints

Data management plan for the grant, "Collaborative Research: Combined Tribological and Bactericidal Effect of Bioinjectable Nanodiamonds on Biological Joints."
Date: 2023-06-01/2026-05-31
Creator: Berman, Diana
Object Type: Text
System: The UNT Digital Library
Consortium on Sensing, Energy-efficient Electronics and Photonics with 2D Materials and Integrated Systems for Training the Next-Generation (open access)

Consortium on Sensing, Energy-efficient Electronics and Photonics with 2D Materials and Integrated Systems for Training the Next-Generation

Data management plan for the grant "Consortium on Sensing, Energy-efficient Electronics and Photonics with 2D Materials and Integrated Systems for Training the Next-Generation"
Date: 2023-02-09/2028-02-08
Creator: Kaul, Anupama
Object Type: Text
System: The UNT Digital Library
Carrier photodynamics in 2D perovskites with solution-processed silver and graphene contacts for bendable optoelectronics (open access)

Carrier photodynamics in 2D perovskites with solution-processed silver and graphene contacts for bendable optoelectronics

Article reporting on the inkjet printed, direct contact study of solution-processed, 2D perovskite-based photodetectors (PDs) formed on flexible PI substrates. Silver (Ag) and graphene (Gr) inks have been engineered to serve as efficient electrical contacts for solution-processed two-dimensional (2D) organo-halide (CH3(CH2)3NH3)2(CH3NH3)n−1PbnI3n+1 (n = 4) layered perovskites, where all inkjet-printed heterostructure PDs were fabricated on polyimide (PI) substrates.
Date: March 25, 2021
Creator: Hossain, Ridwan F.; Min, Misook; Ma, Liang-Chieh; Sakri, Shambhavi R. & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library
Soft crystal martensites: An in situ resonant soft x-ray scattering study of a liquid crystal martensitic transformation (open access)

Soft crystal martensites: An in situ resonant soft x-ray scattering study of a liquid crystal martensitic transformation

Article presents an in-depth discussion of liquid crystal blue phases (BPs).
Date: March 27, 2020
Creator: Min Jin, Hyeong; Li, Xaio; Dolan, James A.; Kline, R. Joseph; Martínez-González, José A.; Ren, Jiaxing et al.
Object Type: Article
System: The UNT Digital Library
Multi-body interactions and carrier dynamics in WSe2 for high-performance quantum-enabled devices (open access)

Multi-body interactions and carrier dynamics in WSe2 for high-performance quantum-enabled devices

Data management plan for the grant "Multi-body interactions and carrier dynamics in WSe2 for high-performance quantum-enabled devices."
Date: 2021-09-15/2024-09-14
Creator: Kaul, Anupama
Object Type: Text
System: The UNT Digital Library
Enabling Multi-scale Modeling by Deciphering Fundamental Mechanisms Underlying Phase Stability, Deformation and Oxidation in Refractory Complex Concentrated Alloys (RCCAs) and Intermetallics (open access)

Enabling Multi-scale Modeling by Deciphering Fundamental Mechanisms Underlying Phase Stability, Deformation and Oxidation in Refractory Complex Concentrated Alloys (RCCAs) and Intermetallics

Data management plan for the research project "Enabling Multi-scale Modeling by Deciphering Fundamental Mechanisms Underlying Phase Stability, Deformation and Oxidation in Refractory Complex Concentrated Alloys (RCCAs) and Intermetallics."
Date: 2021-09-15/2025-09-25
Creator: Banerjee, Rajarshi
Object Type: Text
System: The UNT Digital Library
Co-introduction of precipitate hardening and TRIP in a TWIP high-entropy alloy using friction stir alloying (open access)

Co-introduction of precipitate hardening and TRIP in a TWIP high-entropy alloy using friction stir alloying

Article exploring friction stir alloying (FSA) to tune the microstructure and a composition of a TWIP high-entropy alloy by adding Ti, and thus activating site-specific deformation mechanisms that occur concomitantly in a single alloy. This approach presents a novel microstructural architecture to design alloys, an approach that combines and optimizes local compositions such that multiple deformation mechanisms can be activated to enhance engineering properties.
Date: January 15, 2021
Creator: Wang, Tianhao; Shukla, Shivakant; Gwalani, Bharat; Sinha, S.; Thapliyal, Saket; Frank, Michael et al.
Object Type: Article
System: The UNT Digital Library
Tribo-corrosion response of additively manufactured high-entropy alloy (open access)

Tribo-corrosion response of additively manufactured high-entropy alloy

Article highlighting the potential of utilizing additive manufacturing of HEAs for use in extreme environments that require a combination of tribo-corrosion resistance, mechanical durability, extended service life, and net shaping with low dimensional tolerance.
Date: June 11, 2021
Creator: Shittu, Jibril; Sadeghilaridjani, Maryam; Pole, M.; Muskeri, Saideep; Ren, Jie; Liu, Yanfang et al.
Object Type: Article
System: The UNT Digital Library
First principles computation of composition dependent elastic constants of omega in titanium alloys: implications on mechanical behavior (open access)

First principles computation of composition dependent elastic constants of omega in titanium alloys: implications on mechanical behavior

Article on the poor mechanical properties of Ti alloys. The study shows that the elastic properties of the ω-phase can be systematically varied as a function of its composition to enhance both the ductility and strength of the Ti-alloy. Furthermore, that ω precipitates are not intrinsically embrittling and detrimental and that Ti-alloys can be created with both good ductility and strength by tailoring ω precipitates' composition instead of completely eliminating them.
Date: June 7, 2021
Creator: Salloom, Riyadh; Mantri, Srinivas Aditya; Banerjee, Rajarshi & Srinivasan, S. G.
Object Type: Article
System: The UNT Digital Library

Spectroscopic, structural, and strain-dependent analysis of suspended bulk WSe2 sheets

Article utilizing Raman spectroscopy and photoluminescence (PL) spectroscopy to analyze the phononic and electronic parameters in suspended bulk WSe₂ sheets, fabricated utilizing photolithography and wet chemical etching. The findings of this work will be beneficial in analyzing thermal, optical, and mechanical properties of WSe₂ in a suspended platform for its application in electronic, thermoelectric, and mechanical sensors in the future.
Date: February 8, 2022
Creator: Bandyopadhyay, Avra S. & Kaul, Anupama
Object Type: Article
System: The UNT Digital Library
Insights into the mechanisms controlling the residual corrosion rate of borosilicate glasses (open access)

Insights into the mechanisms controlling the residual corrosion rate of borosilicate glasses

Article examining the glass durability and residual rate of borosilicate glass. The authors focus on the behavior of the soluble elements of the International Simple Glass (B, Na, and Ca) to show that the residual rate is controlled by the behavior of B, a glass former supposed to dissolve instantaneously when in contact with water and thus widely considered as an ideal tracer. The article demonstrates that B release is controlled by multiple processes highly dependent on the pH. A new paradigm, including B as a key element of the system, is proposed to develop a comprehensive model for the corrosion of borosilicate glass.
Date: December 11, 2020
Creator: Gin, Stéphane; Guo, Xiaolei; Delaye, Jean-Marc; Angeli, Frédéric; Damodaran, Kamalesh; Testud, Véronique et al.
Object Type: Article
System: The UNT Digital Library
Can a simple topological-constraints-based model predict the initial dissolution rate of borosilicate and aluminosilicate glasses? (open access)

Can a simple topological-constraints-based model predict the initial dissolution rate of borosilicate and aluminosilicate glasses?

This article, as an alternative route to empirical models, shows that a structural descriptor based on the number of topological constraints per atom can be used to predict the initial dissolution rate of aluminosilicate and borosilicate glasses after being parameterized on different families of glasses (specific series of borosilicate glasses). Results show that, provided that corrections are made for high alkali content glasses that dissolve incongruently (preferential release of Na), the model gives reasonable predictions, even far from its training domain.
Date: March 16, 2020
Creator: Gin, Stéphane; Wang, Mengyi; Bisbrouck, Nicolas; Taron, Mélanie; Lu, Xiaonan; Deng, Lu et al.
Object Type: Article
System: The UNT Digital Library
Compostable, fully biobased foams using PLA and micro cellulose for zero energy buildings (open access)

Compostable, fully biobased foams using PLA and micro cellulose for zero energy buildings

Article examining foams made from polylactic acid (PLA) and micro cellulose fibrils (MCF) to address the need for bio-resourced foams for the building industry.
Date: October 20, 2020
Creator: Oluwabunmi, Kayode; D'Souza, Nandika Anne, 1967-; Zhao, Weihuan; Choi, Tae-Youl & Theyson, Thomas
Object Type: Article
System: The UNT Digital Library
A modified random network model for P2O5–Na2O–Al2O3–SiO2 glass studied by molecular dynamics simulations (open access)

A modified random network model for P2O5–Na2O–Al2O3–SiO2 glass studied by molecular dynamics simulations

This article investigates the short- and medium-range structural features of sodium aluminosilicate glasses with various P₂O₅ (0–7 mol%) content and Al/Na ratios ranging from 0.667 to 2.000 by using molecular dynamics simulations. Based on the simulated structural information, a modified random network model for P₂O₅-bearing sodium aluminosilicate glass has been proposed, which could be useful to optimize the mobility of sodium ions and design novel functional glass compositions.
Date: February 10, 2021
Creator: Zhao, Yaxian; Du, Jincheng; Cao, Xin; Zhang, Chong; Xu, Gang; Qiao, Xvsheng et al.
Object Type: Article
System: The UNT Digital Library
Bioresorbable stent to manage congenital heart defects in children (open access)

Bioresorbable stent to manage congenital heart defects in children

This article assembles large, pediatric-sized stents (Ø10 - Ø20 mm) from poly(L-lactide) fibers (DH-BDS) at two thicknesses, 250 µm and 300 µm. DH-BDS exhibiting hoop strength similar to metal stents and demonstrating minimal degradation and strength loss over the first year before completely disappearing within 3 to 4.5 years show promise as a pediatric interventional alternative to current strategies.
Date: March 19, 2021
Creator: Wright, Jamie; Nguyen, Annie; D'Souza, Nandika Anne, 1967-; Forbess, Joseph M.; Nugent, Alan; Reddy, Surenderanath R. Veeram et al.
Object Type: Article
System: The UNT Digital Library
Carbon Capture Utilization for Biopolymer Foam Manufacture: Thermal, Mechanical and Acoustic Performance of PCL/PHBV CO2 Foams (open access)

Carbon Capture Utilization for Biopolymer Foam Manufacture: Thermal, Mechanical and Acoustic Performance of PCL/PHBV CO2 Foams

This article uses PCL to blend into PBHV. Both unfoamed and foamed blends are examined. The results provide a pathway to multifunctional performance in foams of high performance biopolymers such as PBHV through harnessing the CO₂ miscibility of PCL.
Date: July 31, 2021
Creator: Oluwabunmi, Kayode E.; Zhao, Weihuan & D'Souza, Nandika Anne, 1967-
Object Type: Article
System: The UNT Digital Library
High entropy alloys – Tunability of deformation mechanisms through integration of compositional and microstructural domains (open access)

High entropy alloys – Tunability of deformation mechanisms through integration of compositional and microstructural domains

This article is a review that categorizes the compositional and microstructural approaches that exhibit potential for a combination of shear induced phase transformation and twinning, thereby expanding beyond the slip based mechanisms.
Date: March 13, 2021
Creator: Mishra, Rajiv; Haridas, Ravi Sankar & Agrawal, Priyanshi
Object Type: Article
System: The UNT Digital Library
Solid-State Additive Manufacturing of Durable Aluminum-Cerium Alloys for High-Temperature Aerospace Structural Applications (open access)

Solid-State Additive Manufacturing of Durable Aluminum-Cerium Alloys for High-Temperature Aerospace Structural Applications

Data management plan for the grant, "Solid-State Additive Manufacturing of Durable Aluminum-Cerium Alloys for High-Temperature Aerospace Structural Applications."
Date: 2022-10-01/2023-09-30
Creator: Vasudevan, Vijay K.
Object Type: Text
System: The UNT Digital Library
In-Situ Monitoring for Quality Assurance and Machine Learning in Direct-Write Additive Manufacturing of 5G RF Electronic Ceramics (open access)

In-Situ Monitoring for Quality Assurance and Machine Learning in Direct-Write Additive Manufacturing of 5G RF Electronic Ceramics

Data management plan for the grant, "In-Situ Monitoring for Quality Assurance and Machine Learning in Direct-Write Additive Manufacturing of 5G RF Electronic Ceramics." The principal near-term objective of the PI is to use in-situ monitoring to define the processing rules that determine the microstructure, macrostructure, and high-frequency dielectric response of electronic ceramic materials for advanced RF “grown” by laser-assisted direct-write AM. In-situ measurements will be correlated and validated with ex-situ characterization, and these data will iteratively guide synthesis and processing optimization. In parallel, the experimental measurements will be used as inputs for the physics-based process modeling. Predictions from the experimentally validated models will in turn: 1) guide synthesis and processing optimization and, 2) train and constrain ML. Thus, quality assurance is achieved.
Date: 2022-09-01/2025-06-30
Creator: Shepherd, Nigel D.
Object Type: Text
System: The UNT Digital Library