Abstract: In accordance with at least one aspect of this disclosure, an ultraviolet radiation (UV) sensor includes a UV sensitive material and a first electrode and a second electrode connected in series through the UV sensitive material such that UV radiation can reach the UV sensitive material. The UV sensitive material can include at least one of zinc tin oxide, magnesium oxide, magnesium zinc oxide, or zinc oxide. The electrodes can be interdigitated comb electrodes.

Abstract: In accordance with at least one aspect of this disclosure, an ultraviolet radiation (UV) sensor includes a UV sensitive material and a first electrode and a second electrode connected in series through the UV sensitive material such that UV radiation can reach the UV sensitive material. The UV sensitive material can include at least one of zinc tin oxide, magnesium oxide, magnesium zinc oxide, or zinc oxide. The electrodes can be interdigitated comb electrodes.

Abstract: In accordance with at least one aspect of this disclosure, an ultraviolet radiation (UV) sensor includes a UV sensitive material and a first electrode and a second electrode connected in series through the UV sensitive material such that UV radiation can reach the UV sensitive material. The UV sensitive material can include at least one of zinc tin oxide, magnesium oxide, magnesium zinc oxide, or zinc oxide. The electrodes can be interdigitated comb electrodes.

Abstract: Disclosed herein is a fuel blend comprising a hydrocarbon based fuel; and particles that comprise magnesium and boron. Disclosed herein too is a method comprising blending a composition comprising a hydrocarbon based fuel and particles that comprise magnesium and boron to form a fuel blend.

Abstract: A fuel and/or lubricant system for an engine can include an engine component configured to be in fluid communication with the fuel and/or lubricant, and an alternating current (AC) source electrically connected to the engine component to create an electric field of alternating polarity to subject particles within the fuel and/or lubricant to dielectrophoresis as the fuel and/or lubricant passes through the electric field to prevent deposits from forming on the engine component. In certain embodiments, the engine component can be a filter screen configured to filter the fuel and/or lubricant to subject particles within the fuel and/or lubricant to dielectrophoresis as the fuel and/or lubricant passes through the filter screen.

Abstract: A component includes a substrate formed from a metallic or ceramic material and a thermal barrier coating positioned on the substrate. The component also includes a ceramic reflective coating integral with the thermal barrier coating. The reflective coating includes an arrangement of features configured to reflect at a wavelength at which peak emission from a heat source occurs. A method of making a component includes positioning a thermal barrier coating on the component and determining a wavelength emitted from a heat source. The method of making a component also includes producing an arrangement of features using a metamaterial to form a reflective coating and integrating the reflective coating with the thermal barrier coating.

Abstract: A method of fabricating an article includes providing an arrangement of loose nanowires, forming the loose nanowires into a gas turbine engine airfoil by depositing the loose nanowires into a mold that has a geometry of the gas turbine engine airfoil, and bonding the loose nanowires together into a unitary cellular structure that has the geometry of the gas turbine engine airfoil.

Abstract: In accordance with at least one aspect of this disclosure, an ultraviolet radiation (UV) sensor includes a UV sensitive material and a first electrode and a second electrode connected in series through the UV sensitive material such that UV radiation can reach the UV sensitive material. The UV sensitive material can include at least one of zinc tin oxide, magnesium oxide, magnesium zinc oxide, or zinc oxide. The electrodes can be interdigitated comb electrodes.

Abstract: A coated metal component includes an aluminum alloy substrate and a protective aluminum coating on a substrate. An interfacial boundary layer between the coating and substrate enhances coating adhesion. The boundary layer includes isolated regions of copper or tin produced by a double zincating process. The protective aluminum coating exhibits improved adhesion and is formed by electrodeposition in an ionic liquid.

Abstract: In accordance with at least one aspect of this disclosure, an ultraviolet radiation (UV) sensor includes a UV sensitive material and a first electrode and a second electrode connected in series through the UV sensitive material such that UV radiation can reach the UV sensitive material. The UV sensitive material can include at least one of zinc tin oxide, magnesium oxide, magnesium zinc oxide, or zinc oxide. The electrodes can be interdigitated comb electrodes.

Abstract: A structure includes a first substrate and a variable grain layer disposed on or formed into the first substrate. The variable grain layer includes a first grain portion having a first grain size and second grain portion having a second grain size. The first grain size is smaller than the second grain size.

Abstract: A fuel and/or lubricant system for an engine can include an engine component configured to be in fluid communication with the fuel and/or lubricant, and an alternating current (AC) source electrically connected to the engine component to create an electric field of alternating polarity to subject particles within the fuel and/or lubricant to dielectrophoresis as the fuel and/or lubricant passes through the electric field to prevent deposits from forming on the engine component. In certain embodiments, the engine component can be a filter screen configured to filter the fuel and/or lubricant to subject particles within the fuel and/or lubricant to dielectrophoresis as the fuel and/or lubricant passes through the filter screen.

Abstract: A method of making an ultraviolet sensor includes applying a metal-containing solution to a substrate using a spin coating technique to form a metal-containing coat. The metal-containing coat is baked and pyrolyzed to form a metal-containing oxide film on the substrate. The metal-containing oxide film has a cubic crystalline structure suitable for ultraviolet photodetectors in flame detection applications.

Abstract: An ultraviolet photodetector for a sensor device includes a film deposited on a substrate. The film includes a compositionally graded magnesium-zinc oxide having a ratio of magnesium-to-zinc that decreases between a portion of the film adjacent to the substrate and a portion of the film opposite the substrate for shifting the peak absorption of the film toward the visible wavelengths of the electromagnetic spectrum.

Abstract: In accordance with at least one aspect of this disclosure, an ultraviolet radiation (UV) sensor includes a UV sensitive material and a first electrode and a second electrode connected in series through the UV sensitive material such that UV radiation can reach the UV sensitive material. The UV sensitive material can include at least one of zinc tin oxide, magnesium oxide, magnesium zinc oxide, or zinc oxide. The electrodes can be interdigitated comb electrodes.

Abstract: A method of making an ultraviolet sensor includes applying a metal-containing solution to a substrate using a spin coating technique to form a metal-containing coat. The metal-containing coat is baked and pyrolyzed to form a metal-containing oxide film on the substrate. The metal-containing oxide film has a cubic crystalline structure suitable for ultraviolet photodetectors in flame detection applications.

Abstract: An ultraviolet photodetector for a sensor device includes a film deposited on a substrate. The film includes a compositionally graded magnesium-zinc oxide having a ratio of magnesium-to-zinc that decreases between a portion of the film adjacent to the substrate and a portion of the film opposite the substrate for shifting the peak absorption of the film toward the visible wavelengths of the electromagnetic spectrum.

Abstract: A component includes a substrate formed from a metallic or ceramic material and a thermal barrier coating positioned on the substrate. The component also includes a ceramic reflective coating integral with the thermal barrier coating. The reflective coating includes an arrangement of features configured to reflect at a wavelength at which peak emission from a heat source occurs. A method of making a component includes positioning a thermal barrier coating on the component and determining a wavelength emitted from a heat source. The method of making a component also includes producing an arrangement of features using a metamaterial to form a reflective coating and integrating the reflective coating with the thermal barrier coating.

Abstract: A method of fabricating an article includes providing an arrangement of loose nanowires and bonding the loose nanowires together into a unitary cellular structure.

Abstract: A coated metal component includes an aluminum alloy substrate and a protective aluminum coating on a substrate. An interfacial boundary layer between the coating and substrate enhances coating adhesion. The boundary layer includes isolated regions of copper or tin produced by a double zincating process. The protective aluminum coating exhibits improved adhesion and is formed by electrodeposition in an ionic liquid.