Provided is a high-efficiency vanadium nitride/molybdenum carbide heterojunction hydrogen production electrocatalyst, and a preparation method and application thereof. The electrocatalyst has a heterojunction structure formed by coupling VN and Mo.sub.2C, wherein the mass ratio of VN and Mo.sub.2C is 20:1 to 50:1. The electrocatalyst couples nano-VN and Mo.sub.2C to form a VN/Mo.sub.2C heterojunction, so that the active center is increased, and the balance of the reaction kinetics of H.sup.+ adsorption and H.sub.2 desorption is facilitated, thereby greatly improving the activity of the electrocatalyst.

A carbonized composition is formed by a process including providing an organic composition formed into a predetermined configuration, forming a protective layer over the organic composition, increasing temperature to carbonize the organic composition and form the carbonized composition, and removing the protective layer from the carbonized composition, wherein the carbonized composition has substantially the predetermined configuration. In a number of embodiments, the organic composition includes a nucleic acid. In a number of embodiments, the organic composition consists of a nucleic acid. The nucleic acid may, for example, be DNA.

Embodiments of the present invention describe a method for manufacture of a gel material comprising the steps of: forming a gel sheet by dispensing a gel precursor mixture; allowing gelation to occur to the gel precursor mixture; and cooling the formed gel with a cooling system to control reaction rate.

The present disclosure relates to a W.sub.18O.sub.49/CoO/NF self-supporting electrocatalytic material and a preparation method thereof, the W.sub.18O.sub.49/CoO/NF self-supporting electrocatalytic material comprises: a foamed nickel substrate, and a W.sub.18O.sub.49/CoO composite nano material generated on the foamed nickel substrate in situ; preferably, wherein the W.sub.18O.sub.49/CoO composite nano material comprises CoO nanosheets attached directly to the foamed nickel substrate, and W.sub.18O.sub.49 nanowires attached to the nanosheets.

The present disclosure relates to a W.sub.18O.sub.49/COO/CoWO.sub.4/NF self-supporting electrocatalytic material and a preparation method thereof, the W.sub.18O.sub.49/CoO/CoWO.sub.4/NF self-supporting electrocatalytic material comprising: a foamed nickel substrate and a W.sub.18O.sub.49/CoO/CoWO.sub.4 composite material formed in-situ on a foamed nickel substrate. Preferably, the W.sub.18O.sub.49/CoO/CoWO.sub.4 composite material is CoO/CoWO.sub.4 composite nanosheets and W.sub.18O.sub.49 nanowires distributed among the CoO/CoWO.sub.4 composite nanosheets.

A display panel and a fabricating method thereof are provided. The fabricating method of the display panel has steps of: providing a substrate; forming a light conversion layer on the substrate, wherein material of the light conversion layer has a perovskite structural material with a chemical formula of ABX.sub.3, wherein A represents an inorganic element, B represents an inorganic element, and X represents a halogen; performing a patterning step on the light conversion layer by an antisolvent method, wherein the light conversion layer forms a plurality of light conversion patterns; and forming a pixel layer on the light conversion layer, wherein the pixel layer has a plurality of pixel units, and the plurality of pixel units are respectively aligned with the plurality of light conversion patterns. The fabricating method can reduce a dark state brightness of the display panel, thereby improving contrast of the display panel.

Porous, binderless ceramic surface modification materials are described, and applications of use thereof. The ceramic material may include a metal oxide and/or metal hydroxide, and/or hydrates thereof, on a substrate surface.

The plasma-resistant coating film according to the present invention is formed on a substrate, including crystalline Y.sub.2O.sub.3 particles having an average particle diameter of 0.5 μm to 5.0 μm in a SiO.sub.2 film, in which a film density of the plasma-resistant coating film is 90% or more, the film density being obtained by performing image analysis of a cross section of the film with an electron scanning microscope and by using the following expression (1), a size of pores in the film is 5 μm or less in terms of diameter, and a peeling rate of the film from the substrate measured by performing a cross-cut test is 5% or less. Film density (%)=[(S.sub.1−S.sub.2)/S.sub.1]×100 (1). However, in the expression (1), S.sub.1 is an area of the film and S.sub.2 is an area of a pore portion in the film.

An anti-fouling coated heat exchanger in which the anti-fouling coating is a non- continuous silicon oxide film, and a method of making an anti-fouling coated heat exchanger in which the anti-fouling coating is a continuous or discontinuous silicon oxide film which can be formed with high smoothness on the internal surfaces of a closed heat exchanger.

Coating compositions are provided that eject droplets of condensed fluid from a surface. The coatings include a nanostructured coating layer and in some embodiments, also include a hydrophobic layer deposited thereon. The coating materials eject droplets from the surface in the presence of non-condensing gases such as air and may be deployed under conditions of supersaturation of the condensed fluid to be ejected. A heat exchanger design utilizing the coating is described herein.