Alexander D. Dupuy
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View article: Antibacterial and Osteogenic Applications of Ti‐Cu Alloys: A Review of Current Research and Future Directions
Antibacterial and Osteogenic Applications of Ti‐Cu Alloys: A Review of Current Research and Future Directions Open
Dental implants are the standard for replacing missing teeth, with the Ti‐6Al‐4V alloy dominating the market due to its superior osteointegration. However, long‐term implant success is often hindered by peri‐implantitis, which stems from b…
View article: Shear-Thickening Superplastic Transitions in High-Entropy Oxides
Shear-Thickening Superplastic Transitions in High-Entropy Oxides Open
Despite significant interest in their functional properties, the mechanical behavior of high-entropy oxides (HEOs) is not well studied, particularly at elevated temperatures. Bulk (Co,Cu,Mg,Ni,Zn)O (transition metal (TM)-HEO) samples were …
View article: Crystal lattice engineering of spinel phases in Mn-oxide doped (Co,Cu,Mg,Ni,Zn)O
Crystal lattice engineering of spinel phases in Mn-oxide doped (Co,Cu,Mg,Ni,Zn)O Open
(Co,Cu,Mg,Ni,Zn)O has a rocksalt primary phase with reversible secondary phase transformations. Doping with 2 mol% Mn-oxide created a material with non-reversible phase transformations with multiple secondary phases observed by X-ray diffr…
View article: Micropillar compression of single-crystal single-phase (Co, Cu, Mg, Ni, Zn)O
Micropillar compression of single-crystal single-phase (Co, Cu, Mg, Ni, Zn)O Open
Bulk, polycrystalline (Co, Cu, Mg, Ni, Zn)O was synthesized using solid-state sintering. Micropillars were prepared and mechanically deformed along three crystallographic orientations: (001), (101), and (111). Pillars (001) and (111) crack…
View article: High Throughput Exsolution Design of CO2 Reduction Reaction Interface in a Copper/High-Entropy Oxide Tandem Electrode
High Throughput Exsolution Design of CO2 Reduction Reaction Interface in a Copper/High-Entropy Oxide Tandem Electrode Open
The entropy design paradigm is yielding advanced materials for many societally crucial applications. While most work focuses on single-phase materials, there are vast opportunities to integrate entropy-designed materials into novel composi…
View article: Reversible Enhancement of Electronic Conduction Caused by Phase Transformation and Interfacial Segregation in an Entropy‐Stabilized Oxide
Reversible Enhancement of Electronic Conduction Caused by Phase Transformation and Interfacial Segregation in an Entropy‐Stabilized Oxide Open
Entropy‐stabilized oxide (ESO) research has primarily focused on discovering unprecedented structures, chemistries, and properties in the single‐phase state. However, few studies discuss the impacts of entropy stabilization and secondary p…
View article: Manipulating ionic conductivity through chemical modifications in solid-state electrolytes prepared with binderless laser powder bed fusion processing
Manipulating ionic conductivity through chemical modifications in solid-state electrolytes prepared with binderless laser powder bed fusion processing Open
Additive manufacturing of solid-state batteries is advantageous for improving the power density by increasing the geometric complexity of battery components, such as electrodes and electrolytes. In the present study, bulk three-dimensional…
View article: A multi-scale process for mechanical characterization of ceramic materials produced by Direct Ink Writing
A multi-scale process for mechanical characterization of ceramic materials produced by Direct Ink Writing Open
Mechanical characterization of ceramics is challenging, as the statistical nature of their strength requires numerous specimens to extract reliable distribution parameters. Here, we first propose a high-throughput testing procedure that al…
View article: The Reusability of AlSi10Mg Powder in Directed Energy Deposition
The Reusability of AlSi10Mg Powder in Directed Energy Deposition Open
The low deposition efficiency in directed energy deposition (DED) has prompted the reuse of powders that do not fuse to the builds to make additive manufacturing more sustainable. It is unknown, however, how the properties of the powder an…
View article: Dislocation-Mediated Room-Temperature Mechanical Behavior of Multiphase Entropy Stabilized Oxides
Dislocation-Mediated Room-Temperature Mechanical Behavior of Multiphase Entropy Stabilized Oxides Open
View article: Tunable Grain Boundary Conductivity in Sodium Doped High Entropy Oxides
Tunable Grain Boundary Conductivity in Sodium Doped High Entropy Oxides Open
View article: Optical interconnect evaluation process for Thales Alenia Space latest generation of Digital Transparent Processor, DTP6G, and a projection into future needs
Optical interconnect evaluation process for Thales Alenia Space latest generation of Digital Transparent Processor, DTP6G, and a projection into future needs Open
Flexibility and in-flight reconfigurability offered by digital processing have become key features in today's telecom satellite payloads. In recent years, Thales Alenia Space have developed several generations of on-board digital transpare…
View article: High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation
High entropy oxide (Co,Cu,Mg,Ni,Zn)O exhibits grain size dependent room temperature deformation Open
Despite their vast composition space and promising properties, little is known about the fundamental mechanical behavior of high entropy oxides (HEOs). Here we provide experimental evidence of the nanoscale origin of room temperature defor…
View article: Nucleation and growth behavior of multicomponent secondary phases in entropy-stabilized oxides
Nucleation and growth behavior of multicomponent secondary phases in entropy-stabilized oxides Open
The rocksalt structured (Co,Cu,Mg,Ni,Zn)O entropy-stabilized oxide (ESO) exhibits a reversible phase transformation that leads to the formation of Cu-rich tenorite and Co-rich spinel secondary phases. Using atom probe tomography, kinetic a…
View article: Damage tolerance in additively manufactured ceramic architected materials
Damage tolerance in additively manufactured ceramic architected materials Open
Technical ceramics exhibit exceptional high-temperature properties, but unfortunately their extreme crack sensitivity and high melting point make it challenging to manufacture geometrically complex structures with sufficient strength and t…
View article: Correction to: Growth of nanoporous high-entropy oxide thin films by pulsed laser deposition
Correction to: Growth of nanoporous high-entropy oxide thin films by pulsed laser deposition Open
View article: Growth of nanoporous high-entropy oxide thin films by pulsed laser deposition
Growth of nanoporous high-entropy oxide thin films by pulsed laser deposition Open
High-entropy oxides (HEO) with entropic stabilization and compositional flexibility have great potential application in batteries and catalysis. In this work, HEO thin films were synthesized by pulsed laser deposition (PLD) from a rock-sal…
View article: Nano-scale imaging and spectroscopy of interfaces in (Co,Cu,Mg,Ni,Zn)O high entropy oxides
Nano-scale imaging and spectroscopy of interfaces in (Co,Cu,Mg,Ni,Zn)O high entropy oxides Open
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View article: Hidden transformations in entropy-stabilized oxides
Hidden transformations in entropy-stabilized oxides Open
View article: Directed energy deposition of AlSi10Mg: Single track nonscalability and bulk properties
Directed energy deposition of AlSi10Mg: Single track nonscalability and bulk properties Open
View article: High Temperature Deformation Mechanisms in WC-Ni <sub>3</sub>Al Cermets
High Temperature Deformation Mechanisms in WC-Ni <sub>3</sub>Al Cermets Open
View article: Strain-Rate Dependent Deformation Behavior in WC-10 wt%Ni <sub>3</sub>Al Cermet Micropillars Under Uniaxial Compression
Strain-Rate Dependent Deformation Behavior in WC-10 wt%Ni <sub>3</sub>Al Cermet Micropillars Under Uniaxial Compression Open
View article: Entropic phase transformation in nanocrystalline high entropy oxides
Entropic phase transformation in nanocrystalline high entropy oxides Open
High entropy oxide (HEO) materials display a reversible entropy-driven phase transformation that gives rise to a phase state consisting of the entropic single-phase and controllable volume fractions of a secondary phase, which we call the …
View article: Working distance passive stability in laser directed energy deposition additive manufacturing
Working distance passive stability in laser directed energy deposition additive manufacturing Open
In Laser Directed Energy Deposition (L-DED), closed loop control systems can be used to enhance system reliability; however, modulating controlled parameters can have unintended secondary morphological and microstructural effects. To enabl…
View article: Processing and Properties of High Performance Lead Free Electro-Optic Ceramics
Processing and Properties of High Performance Lead Free Electro-Optic Ceramics Open
Electro-optic (EO) materials allow for the precise control of light using electrical signals, which has allowed for the advancement of an incredible array of photonic technologies such as laser systems and optical telecommunications. Most …