Amanda S. Wu
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View article: Efficient stem cell-derived mouse embryo models for environmental studies
Efficient stem cell-derived mouse embryo models for environmental studies Open
Blastoids are stem cell-derived structures that mimic natural blastocysts by incorporating all three lineages: trophectoderm, epiblast, and primitive endoderm. However, current methods often yield incomplete structures that fail to cavitat…
View article: A Brief Discussion on the Integration of Chinese Medicine Characteristics and Physical Chemistry Experimental Course Construction:Taking the Degradation Kinetics of Compound Danshen Prescription as Example
A Brief Discussion on the Integration of Chinese Medicine Characteristics and Physical Chemistry Experimental Course Construction:Taking the Degradation Kinetics of Compound Danshen Prescription as Example Open
This paper explores the possibility of integration of physical and chemical experimental courses of Chinese medicine major, starting from the professional characteristics of Chinese medicine. The present study commences with an examination…
View article: Elastomeric shape memory polymer composites
Elastomeric shape memory polymer composites Open
In accordance with one aspect of the presently disclosed inventive concepts, a product includes a porous three-dimensional (3D) printed polymer structure having elastomeric shape memory, where the structure includes a material comprising a…
View article: Analysis of Microstructure Evolution and Strengthening Mechanism of Titanium-Based Composite Coatings Under Different Laser Scanning Speeds
Analysis of Microstructure Evolution and Strengthening Mechanism of Titanium-Based Composite Coatings Under Different Laser Scanning Speeds Open
View article: Explosive fragmentation of additively manufactured stainless steel
Explosive fragmentation of additively manufactured stainless steel Open
Properties of fragmentation from an explosively driven 316L stainless steel spherical shell section fabricated by a laser powder bed additive manufacturing process with minimal surface finishing are investigated. This shell is driven by an…
View article: Mechanical and Thermal Properties for Uranium and U–6Nb Alloy from First-Principles Theory
Mechanical and Thermal Properties for Uranium and U–6Nb Alloy from First-Principles Theory Open
Elasticity, lattice dynamics, and thermal expansion for uranium and U–6Nb alloy (elastic moduli) are calculated from density functional theory that is extended to include orbital polarization (DFT+OP). Introducing 12.5 at.% of niobium, sub…
View article: Phase Stability in U-6Nb Alloy Doped with Ti from the First Principles Theory
Phase Stability in U-6Nb Alloy Doped with Ti from the First Principles Theory Open
First-principles calculations within the density-functional-theory (DFT) approach are conducted in order to explore and explain the effect of small amounts of titanium on phase stability in the U-6Nb alloy. During rapid quenching from high…
View article: Alloying titanium and niobium via electron beam cold hearth melting
Alloying titanium and niobium via electron beam cold hearth melting Open
Electron beam cold hearth melting of titanium and niobium was performed to assess the feasibility of this technique for uranium processing and to determine system requirements for LLNL applications. The demonstration consisted of (1) alloy…
View article: Active Mixing of Disparate Inks for Multimaterial 3D Printing
Active Mixing of Disparate Inks for Multimaterial 3D Printing Open
3D printing of multimaterial parts relies upon efficient mixing of the ink components and a rapid response to composition changes. However, at low Reynolds numbers and large Peclet numbers, mixing disparate viscosity and density inks poses…
View article: Characterization of Cast U-6Nb Sprue
Characterization of Cast U-6Nb Sprue Open
Shape casting of uranium-6 wt. pct. niobium (U-6Nb) can produce near net shape components, providing a higher efficiency alternative to wrought processing. A substantial amount of materials characterization in support of direct casting pro…
View article: Fiber motion in highly confined flows of carbon fiber and non-Newtonian polymer
Fiber motion in highly confined flows of carbon fiber and non-Newtonian polymer Open
View article: Laser weld geometry and microstructure of cast Uranium-6 wt% niobium alloy
Laser weld geometry and microstructure of cast Uranium-6 wt% niobium alloy Open
View article: Additive Manufacturing of a y0-Tetragonal Uranium-Niobium Alloy
Additive Manufacturing of a y0-Tetragonal Uranium-Niobium Alloy Open
The ability to process near-net shape structures is of particular interest in applications using rare or expensive materials. Laser powder bed fusion additive manufacturing can meet this challenge, yet also introduces significant processin…
View article: Low Temperature Age Hardening in Cast Uranium-6 wt. pct. Niobium
Low Temperature Age Hardening in Cast Uranium-6 wt. pct. Niobium Open
An investigation to determine whether cast U-6Nb would exhibit low temperature (<250°C) age hardening behavior, which has been well-documented in wrought U-6Nb, was performed using a 6 year old near-cylindrical U-6Nb casting, courtesy of A…
View article: Shape memory behavior and recovery force of 4D printed textile functional composites
Shape memory behavior and recovery force of 4D printed textile functional composites Open
View article: Effects of Varying Composition and Kinetics on the Microstructural and Mechanical Properties of Polysiloxane Foams
Effects of Varying Composition and Kinetics on the Microstructural and Mechanical Properties of Polysiloxane Foams Open
Polysiloxane elastomers are used in a wide variety of applications including medicine, aerospace, and defense industries. Though these materials demonstrate many useful properties such as flexibility, resistance to chemical attack, electri…
View article: Laser Weld Geometry and Microstructure of Cast Uranium-6 wt% Niobium Alloy
Laser Weld Geometry and Microstructure of Cast Uranium-6 wt% Niobium Alloy Open
Laser welding was performed on a U6 wt% Nb uranium alloy using a 400W solid state laser with welding speeds from 20 to 2,500 mm/s. This speed range spanned melt pool sizes from traditional welding to surface modification and additive manuf…
View article: Custom 3D Printable Silicones with Tunable Stiffness
Custom 3D Printable Silicones with Tunable Stiffness Open
Silicone elastomers have broad versatility within a variety of potential advanced materials applications, such as soft robotics, biomedical devices, and metamaterials. A series of custom 3D printable silicone inks with tunable stiffness is…
View article: Mechanical Behavior of Additively Manufactured Uranium-6 wt. pct. Niobium
Mechanical Behavior of Additively Manufactured Uranium-6 wt. pct. Niobium Open
This report describes an effort to process uranium-6 weight% niobium using laser powder bed fusion. The chemistry, crystallography, microstructure and mechanical response resulting from this process are discussed with particular emphasis o…
View article: Characterization of residual stress and deformation in additively manufactured ABS polymer and composite specimens
Characterization of residual stress and deformation in additively manufactured ABS polymer and composite specimens Open
View article: 3D Printed Silicones with Shape Memory
3D Printed Silicones with Shape Memory Open
Direct ink writing enables the layer-by-layer manufacture of ordered, porous structures whose mechanical behavior is driven by architecture and material properties. Here, we incorporate two different gas filled microsphere pore formers to …
View article: 3D-Printing of Meso-structurally Ordered Carbon Fiber/Polymer Composites with Unprecedented Orthotropic Physical Properties
3D-Printing of Meso-structurally Ordered Carbon Fiber/Polymer Composites with Unprecedented Orthotropic Physical Properties Open
Here we report the first example of a class of additively manufactured carbon fiber reinforced composite (AMCFRC) materials which have been achieved through the use of a latent thermal cured aromatic thermoset resin system, through an adap…
View article: Editors' Choice—Field Trials Testing of Mixed Potential Electrochemical Hydrogen Safety Sensors at Commercial California Hydrogen Filling Stations
Editors' Choice—Field Trials Testing of Mixed Potential Electrochemical Hydrogen Safety Sensors at Commercial California Hydrogen Filling Stations Open
Hydrogen safety sensors must meet specific performance requirements, mandated by the U.S. Department of Energy, for hydrogen fueling station monitoring. Here, we describe the long-term performance of two zirconia-based mixed potential elec…
View article: The influence of impurities on the crystal structure and mechanical properties of additive manufactured U–14 at.% Nb
The influence of impurities on the crystal structure and mechanical properties of additive manufactured U–14 at.% Nb Open
View article: Demonstration of a prototype hydrogen sensor and electronics package
Demonstration of a prototype hydrogen sensor and electronics package Open
This is a progress report for the demonstration of a prototype hydrogen sensor and electronics package. There are five tasks associated with this, and four have been completed as of August 2016: Station Demonstration and Site Recommendatio…
View article: Demonstration of a Prototype Hydrogen Sensor and Electronics Package - Progress Report 2
Demonstration of a Prototype Hydrogen Sensor and Electronics Package - Progress Report 2 Open
This is the second progress report on the demonstration of a prototype hydrogen sensor and electronics package. It goes into detail about the five tasks, four of which are already completed as of August 2016, with the final to be completed…
View article: Microstructural design and additive manufacturing and characterization of 3D orthogonal short carbon fiber/acrylonitrile-butadiene-styrene preform and composite
Microstructural design and additive manufacturing and characterization of 3D orthogonal short carbon fiber/acrylonitrile-butadiene-styrene preform and composite Open
View article: Additive manufacturing of multi-directional preforms for composites: opportunities and challenges
Additive manufacturing of multi-directional preforms for composites: opportunities and challenges Open
Current additive manufacturing methods present the potential to construct net-shape structures with complicated architectures, thus eliminating the need for multi-step processing and fasteners/joints. Combined with these features is the ab…