Abstract: Embodiments of ionomer components comprising selectively deposited catalysts are described. The ionomer component comprise a catalyst that is preferentially deposited on or in the vicinity of the ionomer component over other areas of electrochemical components that do not comprise the ionomer component. Also disclosed herein are novel methods and apparatus embodiments used to make the disclosed ionomer components and devices comprising the same.

Abstract: Immunogenic compositions and methods of their use in eliciting immune responses to coronaviruses, such as SARS-CoV-2 are provided.

Abstract: Ionomer membranes for fuel cells and related devices are described. An ionomer membrane may be configured with a plurality of anode-side protrusions and/or a plurality of cathode-side protrusions. A filler material(s) may be deposited into voids of an ionomer membrane. Example filler materials include, but are not limited to, platinum (Pt), palladium (Pd), cobalt (Co), nickel (Ni), gold (Au), silver (Ag), iridium (Ir), etc., and their alloys on carbon supports.

Abstract: The present disclosure generally relates to single photon emission from an indirect band gap two-dimensional (2D) material through deterministic strain induced localization. At least some aspects of the present disclosure relate to techniques for deterministically creating spatially localized defect single photon emission sites in the 750 nm to 800 nm regime using a tungsten diselenide (WSe2) film and ultra-sharp SiO2 tips.

Abstract: A structure including a substrate and a coating over the substrate is acoustically excited to measure acoustic response in the structure. The measured acoustic response in the structure is filtered to remove acoustic response of the substrate and determine acoustic response of the coating. The acoustic response of the coating is used to inspect the coating for failure.

Abstract: A device includes a first capacitive energy module and a second capacitive energy module. The first capacitive energy module comprises a first tray that is configured to house a first plurality of capacitive energy components, a first electrode, and a second electrode. The second capacitive energy module comprises a second tray that is configured to house a second plurality of capacitive energy components, a third electrode, and a fourth electrode. The first capacitive energy module is connected to the second capacitive energy module via a plug connector that makes a solid connection.

Abstract: Disclosed herein are embodiments of an energetic compound and methods of making and using the same. Energetic compound embodiments disclosed herein exhibit physical and chemical properties that facilitate their use in various applications, such as high energy propellant plasticizers, melt-castable explosives, and the like. Efficient and safe method embodiments for making the disclosed energetic compound embodiments are described herein.

Abstract: Disclosed herein are embodiments of metal complexes and methods of making the same. The disclosed method embodiments provide a one-step approach to making metal complexes, such as complexes comprising lanthanide metals, rare earth metals, transition metals, main group metals, and/or actinide metals that can be used various applications, such as in separations technology, catalysis (e.g., catalysts for pharmaceutical synthesis and/or catalysts for biomass conversion), nuclear chemistry, LED phosphors, scintillator materials, magnetic materials, and nuclear fuels.

Abstract: Methods and apparatus are disclosed for assessment of microstructural defects in a large structure. Third order elastic constants engender nonlinear excitation of acoustic modes particularly at points of local stiffness changes or stress concentration such as ends of microcracks. A broadband multimode acoustic signal is transmitted through an interrogation region from a first transducer, whereby a second transducer receives an acoustic signal containing linear and nonlinear components. Linear terms are canceled, and a magnitude of the nonlinear acoustic response is measured using time-resolved spectral analysis, to determine a coefficient for acoustic nonlinearity of the interrogation region that serves as a qualitative or quantitative representation of microcrack damage. Broadband signals avoid mode-specific effects such as shadowing or phase mismatch. Damage location can be identified by region or time-of-flight.

Abstract: A fuel contamination detection system includes a fuel quality analyzer, a multiway valve, and a controller. The multiway valve includes a first inlet, a second inlet, and an outlet. The multiway valve also may include a switching device. The controller is electrically coupled to the analyzer. The controller may be coupled to the switching device, if present. Fuel is flowed through the fuel quality analyzer and an output current is measured to determine whether the fuel includes impurities. The controller is operable to signal a fuel dispensing system to dispense fuel if the fuel is sufficiently clean or cease dispensing fuel if the fuel is impure.

Abstract: Examples of air treatment systems for use in neutralizing airborne pathogens are disclosed herein. The air treatment systems comprise a housing, an air moving device, and one or more sources of ultraviolet light. An airflow may be directed through the enclosure by the air moving device and exposed to the ultraviolet light sources disposed within the enclosure. In some examples, the air treatment systems include one or more baffles disposed within the enclosure to disrupt the linear flow of air through the enclosure and cause more uniform exposure to the ultraviolet light emitted by the sources of ultraviolet light. Some examples may also include one or more air filters for removing particulate matter.

Abstract: Computer-implemented methods can include providing a numerical simulation mesh comprising a plurality of nodes and performing a numerical simulation of a solid material using the mesh and a user-selectable transition threshold associated with a cohesive zone model traction-separation relation. Additional computer-implemented methods can include performing a numerical simulation of a solid material using a numerical simulation mesh comprising a plurality of nodes, wherein the numerical simulation includes a transition threshold associated with a cohesive zone model traction-separation relation, and comparing local material states including a strain state of the mesh to the transition threshold during the performing the numerical simulation to determine whether to dynamically insert cohesive elements in the finite element mesh.

Abstract: Disclosed herein are embodiments of a silicone-based foam material and composition and method embodiments for making the same. Also disclosed are embodiments of a silicon-based material that can be formed from the silicone-based foam material, as well as methods for making the same.

Abstract: An attitude determination and control system (ADCS) may include relatively large momentum wheels (i.e., reaction wheels) for improved momentum storage and magnetic torque rods that enable low power sun pointing and dissipate angular momentum imparted during deployment or by differential drag on the space vehicle. The momentum wheels, magnetic torque rods, or both may be algorithmically selected and driven to perform various maneuvers.

Abstract: A device includes a processor configured to generate a palindromic sequence associated with a unique identifier (ID) associated with the device, and provide the generated palindromic sequence to a transmitter, the palindromic sequence including forward order of bits, reverse order of bits and a spacer bit. The device further includes the transmitter configured to repeatedly transmit the generated palindromic.

Abstract: Techniques for framing data in various data transmission contexts are described. A data framing technique may include a transmitter sending a data stream including repeating bits in alternating forward and reverse order. A receiver of the data stream may fold the data stream, and correlate portions of the folded data stream for purposes of validating the data stream and/or identifying an ID in the data stream. In at least some instances, once the receiver validates the data stream, the receiver may accept payload accompanying the data stream.

Abstract: Disclosed herein are embodiments of methods for isolating rare earth elements (REEs) and radioisotopes from coal combustion products, such as fly ash. In particular embodiments, lanthanides, Al, Sc, Y, or compounds comprising lanthanides, AI, Sc, Y, or any combination thereof; or actinides can be isolated using the methods disclosed herein.

Abstract: Disclosed herein are embodiments of a printable composition that can be used to make printed products of a chosen material chemistry that have different levels of porosity within the printed product's structure Also disclosed herein are embodiments of a printed product that has multiple levels of porosity throughout its structure, which can include a macroscale level of porosity, a microscale level of porosity, a nanoscale level of porosity and any combination thereof. These printed products can be made using a 3-D printer and can be made from a single printable composition without the need to add different structural components during the production process. Also disclosed herein are embodiments of a method for making and using a printed product.

Abstract: Immunogenic compositions and methods of their use in eliciting immune responses to coronaviruses, such as SARS-CoV-2 are provided.

Abstract: Processes for tailoring the macroscopic shape, metallic composition, mechanical properties, and pore structure of nanoporous metal foams prepared through combustion synthesis via direct write 3D printing of metal energetic ligand precursor inks made with water and an organic thickening agent are disclosed. Such processes enable production of never before obtainable metal structures with hierarchical porosity, tailorable from the millimeter size regime to the nanometer size regime. Structures produced by these processes have numerous applications including, but not limited to, catalysts, heat exchangers, low density structural materials, biomedical implants, hydrogen storage medium, fuel cells, and batteries.