Abstract: Compositions and processes for forming barrier coatings to prevent hydrogen embrittlement of an underlying material are disclosed. The coating can be made up of composite structures of metal and oxide that are alternately deposited onto a substrate for creating a multilayer coated substrate. Such multilayer coating can be incorporated into many contexts in which hydrogen permeation prevention is desired, such as pipelines and manufacture of advanced automotive steels. The process involves depositing a metal layer onto the substrate followed by a metal oxide layer thereon. The interface of the metal layer and the oxide layer can form space-charge zones that decrease hydrogen permeability therethrough.

Abstract: Systems and methods for regulating hydrogen concentration in structural materials by electrochemically controlling hydrogen desorption to promote recovery from hydrogen embrittlement are disclosed. Embrittled material can be exposed to an electrolyte and a counter electrode to set up a potential across the material to induce the electrochemical oxidation of atomic hydrogen (H) in the surface of the material. Oxidation reduces hydrogen concentration near the surface, increases hydrogen diffusion toward the surface, and eventually accelerates hydrogen desorption through and out of the material. In some embodiments, a catalyst can be applied to the surface of the material to return the material to its original state before embrittlement.

Abstract: Hydrogen-resistant coatings and associated systems and methods are generally described. In some aspects, a hydrogen-resistant coating comprises a doped tin oxide comprising one or more dopants. The doped tin oxide may, in some cases, exhibit low hydrogen solubility and low hydrogen diffusivity and may therefore reduce and/or prevent permeation of hydrogen in an underlying substrate. In some embodiments, the one or more dopants comprise one or more transition metals (e.g., tungsten, molybdenum, niobium).

Abstract: Anti-fouling coatings and associated systems and methods are generally described. In some aspects, a system comprises a substrate, a coating disposed on at least a portion of the substrate, and a fluid comprising one or more foulants, where the coating is configured to be in physical contact with the fluid during use. According to some embodiments, a full-spectral Hamaker constant associated with the coating and the fluid is relatively low (e.g., about 20 zj or less, about 10 zj or less), and the van der Waals (vdW) force between the coating and the one or more foulants is, therefore, correspondingly low. Under some conditions (e.g., high temperature and/or high pressure conditions), intermolecular interactions between the coating and the one or more foulants may he dominated by the vdW force, and a relatively low vdW force may reduce the likelihood of the one or more foulants adhering to and/or otherwise being deposited on the coating.

Abstract: A ceramic membrane for oxidative coupling of methane can include a perovskite oxide and catalyst material on a surface of the membrane.

Abstract: Described are CMOS-compatible protonic resistive devices (e.g., processing elements and/or memory elements). In embodiments, a protonic resistive memory can be formed from a proton-sensitive metal oxide channel where the concentration of protons intercalated inside the layer is controlled to modulate its conductivity. The protons can initially be supplied to the material stack by an implantation method. Irradiation techniques can be implemented to increase the concentration and conductivity of protons inside the materials. Some designs can put the active layer and reservoir in direct contact, creating an electrolyte-free device. Designs provide scalable solutions for full-scale Si-integration.

Abstract: Described are CMOS-compatible protonic resistive devices (e.g., processing elements and/or memory elements). In embodiments, a protonic resistive memory can be formed from a proton-sensitive metal oxide channel where the concentration of protons intercalated inside the layer is controlled to modulate its conductivity. The protons can initially be supplied to the material stack by an implantation method. Irradiation techniques can be implemented to increase the concentration and conductivity of protons inside the materials. Some designs can put the active layer and reservoir in direct contact, creating an electrolyte-free device. Designs provide scalable solutions for full-scale Si-integration.

Abstract: A method and a composition to stabilize the surface cation chemistry of the perovskite or related oxides, and thus, to minimize or completely avoid the detrimental segregation and phase separation of dopant cations at the surface can include modifying the surface with more oxidizable metal cations and/or more oxidizable metal oxides, thereby reducing the oxygen vacancy concentration at the very surface.

Abstract: A method and a composition to stabilize the surface cation chemistry of the perovskite or related oxides, and thus, to minimize or completely avoid the detrimental segregation and phase separation of dopant cations at the surface can include modifying the surface with more oxidizable metal cations and/or more oxidizable metal oxides, thereby reducing the oxygen vacancy concentration at the very surface.