From mechanics to thermodynamics: A relation between the brittleness and the thermal expansivity for polymers (open access)

From mechanics to thermodynamics: A relation between the brittleness and the thermal expansivity for polymers

Article provides an equation relating the linear isobaric expansivity to the brittleness B for a number of polymers with a large variety of chemical structures and consequently with a large variety of properties.
Date: February 19, 2019
Creator: Brostow, Witold, 1934- & Osmanson, Allison T.
System: The UNT Digital Library
Fundamentals of three-dimensional Yb-fiber Nd:YAG laser machining of structural bone (open access)

Fundamentals of three-dimensional Yb-fiber Nd:YAG laser machining of structural bone

This article presents a study that aims to understand the fundamental aspects of the laser-bone interaction in three-dimensional laser machining of the bone through an integrated experimental-computational approach.
Date: June 28, 2019
Creator: Dahotre, Narendra B.; Pantawane, Mangesh V.; Robertson, William B.; Khan, Riaz J. K. & Fick, Daniel P.
System: The UNT Digital Library
A novel nano-particle strengthened titanium alloy with exceptional specific strength (open access)

A novel nano-particle strengthened titanium alloy with exceptional specific strength

This article microstructurally tailors an exceptionally high-strength titanium alloy, Ti-6Al-2Sn-4Zr-6Mo (Ti6246) through friction stir processing (FSP) in order to provide enhanced weight savings and improved fuel efficiency. The specific strength attained in one of the conditions is close to 450 MPa m³/mg, which is about 22% to 85% greater than any commercially available metallic material. This novel nano particle strengthened Ti alloy is a potential replacement for many structural alloys, enabling significant weight reduction opportunities.
Date: May 7, 2019
Creator: Dutt, Aniket K.; Gwalani, Bharat; Tungala, Vedavyas; Carl, Matthew; Mishra, Rajiv; Tamirisakandala, Sesh A. et al.
System: The UNT Digital Library
Synthesis, characterization, and in vitro evaluation of gamma radiation-induced PEGylated isoniazid (open access)

Synthesis, characterization, and in vitro evaluation of gamma radiation-induced PEGylated isoniazid

Article describes experiment where researchers synthesized a PEGylated isoniazid (PEG-g-INH or PEG–INH) by gamma radiation-induced polymerization for the first time.
Date: August 6, 2019
Creator: González-Torres, Maykel; Guzmán-Beltrán, Silvia; Mata-Gómez, Marco A.; González-Valdez, José; Leyva-Gómez, Gerardo; Melgarejo-Ramírez, Yaaziel et al.
System: The UNT Digital Library
Influence of ordered L1₂ precipitation on strain-rate dependent mechanical behavior in a eutectic high entropy alloy (open access)

Influence of ordered L1₂ precipitation on strain-rate dependent mechanical behavior in a eutectic high entropy alloy

This article focuses on Al0.7CoCrFeNi, a lamellar dual-phase (fcc + B2) precipitation-strengthenable eutectic high entropy alloy. The back-stresses from the coherent L12 precipitate were insufficient to cause improvement in twin nucleation, owing to elevated twinning stress under quasi-static testing. However, under dynamic testing high density of twins were observed.
Date: April 23, 2019
Creator: Gwalani, Bharat; Gangireddy, Sindhura; Zheng, Yufeng; Soni, V.; Mishra, Rajiv & Banerjee, Rajarshi
System: The UNT Digital Library
Composition-dependent apparent activation-energy and sluggish grain-growth in high entropy alloys (open access)

Composition-dependent apparent activation-energy and sluggish grain-growth in high entropy alloys

Article discusses experimental results which reveal that the apparent activation-energy for grain-growth in an fcc-based AlxCoCrFeNi high entropy alloy (HEA) system increases from 179 to 486 kJ/mol when the Al content increases from x = 0.1 to 0.3.
Date: April 10, 2019
Creator: Gwalani, Bharat; Salloom, Riyadh; Alam, Talukder; Valentin, S.G.; Zhou, X.; Thompson, G. et al.
System: The UNT Digital Library
Noble-Metal based Metallic Glasses as Highly Catalytic Materials for Hydrogen Oxidation Reaction in Fuel Cells (open access)

Noble-Metal based Metallic Glasses as Highly Catalytic Materials for Hydrogen Oxidation Reaction in Fuel Cells

Article describes study evaluating the electro-catalytic behavior of recently developed Pt-, Pd-, and Pt/Pd-based metallic glasses using scanning electrochemical microscopy.
Date: August 20, 2019
Creator: Hasannaeimi, Vahid & Mukherjee, Sundeep
System: The UNT Digital Library
Surface degradation mechanisms in a eutectic high entropy alloy at microstructural length-scales and correlation with phase-specific work function (open access)

Surface degradation mechanisms in a eutectic high entropy alloy at microstructural length-scales and correlation with phase-specific work function

Article evaluating wear and corrosion behavior for the AlCoCrFeNi2.1 eutectic high entropy alloy consisting of BCC (B2), and FCC (L12) lamellae.
Date: January 9, 2019
Creator: Hasannaeimi, Vahid; Ayyagari, Aditya; Muskeri, Saideep; Salloom, Riyadh & Mukherjee, Sundeep
System: The UNT Digital Library
Corrosion of Al0.1CoCrFeNi High Entropy Alloy in a Molten Eutectic Salt (open access)

Corrosion of Al0.1CoCrFeNi High Entropy Alloy in a Molten Eutectic Salt

Article describes study which investigates the hot corrosion behavior of Al0.1CoCrFeNi high entropy alloy (HEA) and Ni-base Alloy 718.
Date: July 17, 2019
Creator: Jalbuena, A.A.; Ury, Nicholas; Bae, Jaewan; Faraj, Christopher; Hanan, Kailey; Kasnakjian, Shahan et al.
System: The UNT Digital Library
Sc3N@C80 and La@C82 doped graphene for a new class of optoelectronic devices (open access)

Sc3N@C80 and La@C82 doped graphene for a new class of optoelectronic devices

This is the Author Manuscript version of an article presenting high-performance hybrid graphene photodetectors prepared with endohedral fullerenes deposited on graphene using electrophoretic methods for the first time.
Date: December 19, 2019
Creator: Jayanand, Kishan; Min, Misook; Chugh, Srishti; Kaul, Anupama; Adhikari, Nirmal & Echegoyen, Luis
System: The UNT Digital Library
Physical and optical properties of the International Simple Glass (open access)

Physical and optical properties of the International Simple Glass

This article presents physical property data (both published and previously unpublished) on a single batch of International Simple Glass (ISG), which was cast into individual ingots that were distributed to the collaborators. Properties from the atomic scale to the macroscale, including composition and elemental impurities, phase purity, density, thermal properties, mechanical properties, optical and vibrational properties, and the results of molecular dynamics simulations are presented, as well as information on the surface composition and morphology after polishing. Although the existing literature on the alteration of ISG is not extensively reviewed here, the results of well-controlled static alteration experiments are presented here as a point of reference for other performance investigations.
Date: May 8, 2018
Creator: Kaspar, Tiffany C.; Ryan, Joseph V.; Pantano, Carlo G.; Rice, Jarrett; Trivelpiece, Cory; Hyatt, Neil C. et al.
System: The UNT Digital Library
Facile Photochemical Syntheses of Conjoined Nanotwin Gold-Silver Particles within a Biologically-Benign Chitosan Polymer (open access)

Facile Photochemical Syntheses of Conjoined Nanotwin Gold-Silver Particles within a Biologically-Benign Chitosan Polymer

This article developed a simple photochemical method for making conjoined bi-metallic gold-silver (Au/Ag) nanotwins, a new breed of nanoparticles.
Date: March 6, 2019
Creator: Korir, Daniel K.; Gwalani, Bharat; Joseph, Abel; Kamras, Brian; Arvapally, Ravi K.; Omary, Mohammad A. et al.
System: The UNT Digital Library
Sculpted grain boundaries in soft crystals (open access)

Sculpted grain boundaries in soft crystals

Article describes study in which "soft heteroepitaxy” is used to exert precise control over the lattice orientation of three-dimensional liquid crystalline soft crystals, thereby granting the ability to sculpt the grain boundaries between them.
Date: November 29, 2019
Creator: Li, Xaio; Martínez-González, José A.; Guzmán, Orlando; Ma, Xuedan; Park, Kangho; Zhou, Chun et al.
System: The UNT Digital Library
Effect of solution condition on hydroxyapatite formation in evaluating bioactivity of B2O3 containing 45S5 bioactive glasses (open access)

Effect of solution condition on hydroxyapatite formation in evaluating bioactivity of B2O3 containing 45S5 bioactive glasses

Article describes study investigating the effects of testing solutions and conditions on hydroxyapatite (HAp) formation as a means of in vitro bioactivity evaluation of B2O3 containing 45S5 bioactive glasses.
Date: June 5, 2019
Creator: Lu, Xiaonan; Kolzow, Jessica; Chen, Roberto R. & Du, Jincheng
System: The UNT Digital Library
Detrimental Effects and Prevention of Acidic Electrolytes on Oxygen Reduction Reaction Catalytic Performance of Heteroatom-Doped Graphene Catalysts (open access)

Detrimental Effects and Prevention of Acidic Electrolytes on Oxygen Reduction Reaction Catalytic Performance of Heteroatom-Doped Graphene Catalysts

Article describes study in which the density functional theory (DFT) methods were applied to understand the inferior performance of doped graphene in acid.
Date: November 21, 2019
Creator: Ma, Jun; Gong, Lele; Shen, Yang; Sun, Defeng; Liu, Bowen; Zhang, Jing et al.
System: The UNT Digital Library
Deformation Induced Hierarchical Twinning Coupled with Omega Transformation in a Metastable β-Ti Alloy (open access)

Deformation Induced Hierarchical Twinning Coupled with Omega Transformation in a Metastable β-Ti Alloy

This article looks at hierarchical twinning in metastable body-centered cubic (bcc) β-titanium alloy on tensile deformation.
Date: August 15, 2015
Creator: Mantri, Srinivas Aditya; Sun, F.; Choudhuri, Deep; Alam, Talukder; Gwalani, Bharat; Prima, Frederic et al.
System: The UNT Digital Library
Activation Volume and Energy for Dislocation Nucleation in Multi-Principal Element Alloys (open access)

Activation Volume and Energy for Dislocation Nucleation in Multi-Principal Element Alloys

Paper describes study evaluating incipient plasticity in multi-principal element alloys, CoCrNi, CoCrFeMnNi, and Al0.1CoCrFeNi by nano-indentation and compared with pure Ni.
Date: February 23, 2019
Creator: Mridha, Sanghita; Sadeghilaridjani, Maryam & Mukherjee, Sundeep
System: The UNT Digital Library
Multi-Fold Enhancement in Compressive Properties of Polystyrene Foam Using Pre-delaminated Stearate Functionalized Layer Double Hydroxides (open access)

Multi-Fold Enhancement in Compressive Properties of Polystyrene Foam Using Pre-delaminated Stearate Functionalized Layer Double Hydroxides

Describes study in developing an environmentally benign styrene foam using supercritical CO2.
Date: December 19, 2019
Creator: Ogunsona, Emmanuel O.; Dagnon, Koffi L. & D'Souza, Nandika Anne, 1967-
System: The UNT Digital Library
Bioactive glass coatings on metallic implants for biomedical applications (open access)

Bioactive glass coatings on metallic implants for biomedical applications

Article provides a detailed overview of the benefits and issues of metal alloys when used as biomedical implants and how they are improved by bioactive glass-based coatings for biomedical applications.
Date: October 5, 2019
Creator: Oliver, Joy-anne N.; Su, Yingchao; Lu, Xiaonan; Kuo, Po Hsuen; Du, Jincheng & Zhu, Donghui
System: The UNT Digital Library
First-principles study of diffusion and interactions of hydrogen with silicon, phosphorus, and sulfur impurities in nickel (open access)

First-principles study of diffusion and interactions of hydrogen with silicon, phosphorus, and sulfur impurities in nickel

Article systematically studying the effect of Si, P, and S impurities on the diffusion and binding of an H atom in a face-centered-cubic (FCC) Ni lattice using density functional theory (DFT),
Date: March 26, 2019
Creator: Paranjape, Priyanvada; Gopal, Priya & Srinivasan, S. G.
System: The UNT Digital Library
Growth of pulsed laser deposited few-layer WS2 films (open access)

Growth of pulsed laser deposited few-layer WS2 films

This article performs X-ray photoelectron, Raman, and diffraction studies of few-layered pulsed laser deposited WS₂ films as a function of laser fluence and frequency to understand the impact on structure and properties.
Date: August 13, 2019
Creator: Rathod, Urmilaben P.; Cai, Bimin; Iheomamere, Chukwudi; Nyandoto, Gilbert; Voevodin, Andrey A. & Shepherd, Nigel D.
System: The UNT Digital Library
Corrosion Behavior of Selectively Laser Melted CoCrFeMnNi High Entropy Alloy (open access)

Corrosion Behavior of Selectively Laser Melted CoCrFeMnNi High Entropy Alloy

The article focuses on a study that widens the toolbox to manufacture HEAs with exceptional corrosion resistance by additive manufacturing. CoCrFeMnNi high entropy alloys (HEAs) were additively manufactured (AM) by laser powder bed fusion and their corrosion resistance in 3.5 wt% NaCl solution was studied by potentiodynamic polarization and electrochemical impedance spectroscopy tests. A systematic study of AM CoCrFeMnNi HEAs’ porosity under a wide range of laser processing parameters was conducted and a processing map was constructed to identify the optimal laser processing window for CoCrFeMnNi HEAs.
Date: September 23, 2019
Creator: Ren, Jie; Mahajan, Chaitanya; Liu, Liang; Follette, David; Chen, Wen & Mukherjee, Sundeep
System: The UNT Digital Library
Bioinspired cellular sheath-core electrospun non-woven mesh (open access)

Bioinspired cellular sheath-core electrospun non-woven mesh

Article using preferential solubility of a polymer in supercritical CO2 to develop a new architecture using biocompatible polymers based on porous core-sheath fiber fabrication technique.
Date: May 23, 2019
Creator: Rizvi, Hussain R.; D'Souza, Nandika Anne, 1967-; Ayre, Brian G. & Ramesh, Dinesh
System: The UNT Digital Library
Nature-Guided Synthesis of Advanced Bio-Lubricants (open access)

Nature-Guided Synthesis of Advanced Bio-Lubricants

Article describes study which finds that Orychophragmus violaceus (Ov) seed oil has superior lubrication properties, based on the unusual structural features of the major lipid species—triacylglycerol (TAG) estolides.
Date: August 12, 2019
Creator: Romsdahl, Trevor; Shirani, Asghar; Minto, Robert E.; Zhang, Chunyu; Cahoon, Edgar B.; Chapman, Kent Dean et al.
System: The UNT Digital Library