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
Object Type: Article
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.
Object Type: Article
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.
Object Type: Article
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
Object Type: Article
System: The UNT Digital Library
Structure and Electronic Properties of InSb Nanowires Grown in Flexible Polycarbonate Membranes (open access)

Structure and Electronic Properties of InSb Nanowires Grown in Flexible Polycarbonate Membranes

The article explores the various factors that affect nucleation and nanowire growth. A dense array of vertically aligned indium antimonide (InSb) nanowires with high aspect ratio were grown in the pores of a track-etched polycarbonate membrane via a one-step electrochemical method.
Date: September 5, 2019
Creator: Singh, Abhay; Roccapriore, Kevin M.; Algarni, Zaina; Salloom, Riyadh; Golden, Teresa Diane, 1963- & Philipose, Usha
Object Type: Article
System: The UNT Digital Library
On the evolving nature of c/a ratio in a hexagonal close-packed epsilon martensite phase in transformative high entropy alloys (open access)

On the evolving nature of c/a ratio in a hexagonal close-packed epsilon martensite phase in transformative high entropy alloys

Article studying c/a ratio and transformation volume change of h.c.p. (hexagonal close packed) epsilon martensite phase in transformative high entropy alloys (HEAs) quantified as functions of alloy chemistry, friction stir processing and tensile deformation. The study reveals that while intrinsic c/a is dependent on alloying elements, c/a of epsilon in transformative HEAs changes with processing and deformation.
Date: June 18, 2019
Creator: Sinha, Subhasis; Nene, Saurabh S.; Frank, Michael; Liu, Kaimiao; Agrawal, Priyanka & Mishra, Rajiv
Object Type: Article
System: The UNT Digital Library
On the evolving nature of c/a ratio in a hexagonal close-packed epsilon martensite phase in transformative high entropy alloys (open access)

On the evolving nature of c/a ratio in a hexagonal close-packed epsilon martensite phase in transformative high entropy alloys

Article describes a study in which c/a ratio and transformation volume change of h.c.p. epsilon martensite phase in transformative high entropy alloys (HEAs) were quantified as functions of alloy chemistry, friction stir processing and tensile deformation.
Date: September 12, 2019
Creator: Sinha, Subhasis; Nene, Saurabh S.; Frank, Michael; Liu, Kaimiao; Agrawal, Priyanka & Mishra, Rajiv
Object Type: Article
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
Object Type: Article
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.
Object Type: Article
System: The UNT Digital Library
Graphene-covered transition metal halide molecules as efficient and durable electrocatalysts for oxygen reduction and evolution reactions (open access)

Graphene-covered transition metal halide molecules as efficient and durable electrocatalysts for oxygen reduction and evolution reactions

Author Manuscript version of an article designing a new type of electrocatalysts consisting of transition metal halide molecules covered by graphene sheets. This work provides a theoretical base for rationally designing durable electrocatalysts with excellent catalytic activities.
Date: September 26, 2019
Creator: Xia, Zhenhai; Zhang, Detao; Zhang, Jing; Gong, Lele; Zhu, Yonghao & Zhang, Lipeng
Object Type: Article
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
Object Type: Article
System: The UNT Digital Library
Metal Coordination‐Mediated Functional Grading and Self‐Healing in Mussel Byssus Cuticle (open access)

Metal Coordination‐Mediated Functional Grading and Self‐Healing in Mussel Byssus Cuticle

Article demonstrates direct evidence of Fe3+ and Fe2+ gradient distribution across mussel byssal cuticle threads thickness, which shows more Fe2+ inside the inner cuticle, to support the hypothesis that the cuticle is a functionally graded material with high stiffness, extensibility, and self‐healing capacity.
Date: October 24, 2019
Creator: Xu, Quan; Xu, Meng; Lin, Chun-Yu; Zhao, Qiang; Zhang, Rui; Dong, Xiaoxiao et al.
Object Type: Article
System: The UNT Digital Library
Tribologically induced nanolaminate in a cold-sprayed WC-reinforced Cu matrix composite: a key to high wear resistance (open access)

Tribologically induced nanolaminate in a cold-sprayed WC-reinforced Cu matrix composite: a key to high wear resistance

Article describes an experiment where a self-organized 2D nanolaminate with an average lamella thickness of ~22 nm was formed in the subsurface of a cold-sprayed WC-reinforced metal matrix composite (MMC) Cu-MoS2-WC during oscillatory sliding, resulting in more stable friction and improved wear resistance.
Date: November 15, 2019
Creator: Zhang, Yinyin; Choudhuri, Deep; Scharf, Thomas W.; Descartes, Sylvie & Chromik, Richard R.
Object Type: Article
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.
Object Type: Article
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.
Object Type: Article
System: The UNT Digital Library
Maxwell-Wagner-Sillars Dynamics and Enhanced Radio-Frequency Elastomechanical Susceptibility in PNIPAm Hydrogel-KF-doped Barium Titanate Nanoparticle Composites (open access)

Maxwell-Wagner-Sillars Dynamics and Enhanced Radio-Frequency Elastomechanical Susceptibility in PNIPAm Hydrogel-KF-doped Barium Titanate Nanoparticle Composites

Article describes study investigating Maxwell-Wagner-Sillars (MWS) dynamics and electromagnetic radio-frequency (RF) actuation of the volumetric phase change in a hybrid polymer composite consisting of hydrogel suspended with high-k nanoparticles.
Date: December 19, 2019
Creator: Walker, Ezekiel; Akishige, Yukikuni; Cai, Tong; Roberts, James A.; Shepherd, Nigel; Wu, Shijie et al.
Object Type: Article
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-
Object Type: Article
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
Object Type: Article
System: The UNT Digital Library
Durability of Portland Concrete Containing Polymeric Fillers and Fly Ash (open access)

Durability of Portland Concrete Containing Polymeric Fillers and Fly Ash

Article explores degradation of Portland concrete and finds that the combination of fly ash with polymers provides significantly improved properties.
Date: January 2, 2020
Creator: Brostow, Witold, 1934-; Chetuya, Nonso; Hong, Hee Jae; Gencel, Osman; Menard, Noah & Sayana, Susmitha
Object Type: Article
System: The UNT Digital Library
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
Achieving extraordinary structural efficiency in a wrought magnesium rare earth alloy (open access)

Achieving extraordinary structural efficiency in a wrought magnesium rare earth alloy

Article describes development of an ultrafine-grained magnesium alloy with an extraordinary strength and ductility combination, exceptional high specific strength, zero yield strength asymmetry and excellent high strain rate superplasticity.
Date: January 29, 2020
Creator: Panigrahi, S. K.; Mishra, Rajiv; Brennan, R.C. & Cho, K. C.
Object Type: Article
System: The UNT Digital Library
High-Temperature Nano-Indentation Creep Behavior of Multi-Principal Element Alloys under Static and Dynamic Loads (open access)

High-Temperature Nano-Indentation Creep Behavior of Multi-Principal Element Alloys under Static and Dynamic Loads

Paper describes the results of studies testing the creep resistance of two multi-principal element alloys, CoCrNi and CoCrFeMnNi.
Date: February 13, 2020
Creator: Sadeghilaridjani, Maryam & Mukherjee, Sundeep
Object Type: Article
System: The UNT Digital Library
Small-scale mechanical behavior of a eutectic high entropy alloy (open access)

Small-scale mechanical behavior of a eutectic high entropy alloy

Article describes study evaluating small-scale mechanical behavior was for AlCoCrFeNi2.1 eutectic high entropy alloy, consisting of a lamellar arrangement of L12 and B2 solid-solution phases.
Date: February 14, 2020
Creator: Muskeri, Saideep; Hasannaeimi, Vahid; Salloom, Riyadh; Sadeghilaridjani, Maryam & Mukherjee, Sundeep
Object Type: Article
System: The UNT Digital Library
High-Temperature Nano-Indentation Creep of Reduced Activity High Entropy Alloys Based on 4-5-6 Elemental Palette (open access)

High-Temperature Nano-Indentation Creep of Reduced Activity High Entropy Alloys Based on 4-5-6 Elemental Palette

In this article the time-dependent plastic deformation behavior of two refractory high entropy alloys was investigated, namely HfTaTiVZr and TaTiVWZr. These alloys are based on reduced activity metals from the 4-5-6 elemental palette that would allow easy post-service recycling after use in nuclear reactors. The creep behavior was investigated using nano-indentation over the temperature range of 298 K to 573 K under static and dynamic loads up to 5 N.
Date: February 18, 2020
Creator: Sadeghilaridjani, Maryam; Muskeri, Saideep; Pole, Mayur & Mukherjee, Sundeep
Object Type: Article
System: The UNT Digital Library