A superhydrophobic multifunctional coating and a preparation method thereof are provided, which relate to the technical field of coating materials. The superhydrophobic multifunctional coating includes the following components in percentage by volume: 0.1-3.0% of hydrophobic composition, 1.5-12% of texture stabilizer, 17-60% of binder and 25-80% of alcohol-free substrate material. The multifunctional coating not only has the characteristics of high hydrophobicity, high wettability angle greater than or equal to 160+5 degrees, rolling angle less than or equal to 5 degrees, oleophobic property, chemical erosion medium resistance, chemical inertia, low surface tension and the like, but also does not need to pretreat materials, so that the surface physical and chemical characteristics of various materials can be improved.

The present invention relates to preparation and use of biocompatible and electrically conductive 3D hydrogels comprising nanocellulose fibrils, such as disintegrated bacterial nanocellulose, plant derived nanocellulose, tunicate derived nanocellulose, or algae derived nanocellulose, together with carbon nanotubes or graphene oxide, as a biocompatible and conductive 3D hydrogel for diagnostics and intervention to mimic or restore tissue and organ function. Biocompatible conductive 3D hydrogels described in this invention can be extruded, casted or injected. The 3D hydrogels described in this invention are cohesive 3D structures and provide electrical conductivity in wet form. 3D hydrogels described in this invention can be further crosslinked using divalent ions such as Calcium ions which improve mechanical stability. Such crosslinking can take place in an animal or human body in a physiological environment after injection into the tissue. 3D hydrogels are biocompatible and show preferable mechanical properties and electrical conductivity through printed lines (4.10.sup.1 S cm.sup.1). The 3D hydrogels prepared by this invention are suited as bioassays to screen drugs against neurodegenerative diseases such as Alzheimer's and Parkinson's, study brain function, and/or be used to link the human brain with electronic and/or communication devices. They can also be injected to replace neural tissue or stimulate guiding of neural cells. They can also be used to inject into the heart and stimulate the heart by using electrical signaling or to repair myocardial infarction.

A method of making a silver-silicalite coating on a surface of a stainless-steel substrate is provided. The method includes mixing metakaolin with an aqueous solution of NaOH to form a first mixture. The method further includes mixing silica gel and silver nitrate with the first mixture to form a second mixture. Furthermore, the method includes mixing Zeolites Socony Mobil-5 (ZSM-5) with the second mixture to form a third mixture. The method further includes hydrothermally treating the stainless-steel substrate with the third mixture to form the silver-silicalite coating on the surface of the stainless-steel substrate. The hydrothermal treatment is carried out in the absence of an organic template. The stainless-steel substrate coated with the silver-silicalite coating, prepared by the method of the present disclosure, has lower corrosion in comparison to the same stainless-steel substrate without the silver-silicalite coating.

According to an example aspect of the present invention, there is provided a method of preparing a transparent varnish composition. The method comprises the steps of providing a binder, adding to the binder 1 to 40 wt % precipitated calcium carbonate particles by weight of the composition, wherein the precipitated calcium carbonate particles have an average D.sub.50 particle size of 60 to 120 nm measured by dynamic light scattering, fewer than 10% of the precipitated calcium carbonate particles by volume of the total precipitated calcium carbonate particles have a particles size of 75 nm or less, fewer than 10% of the precipitated calcium carbonate particles by volume of the total precipitated calcium carbonate particles have a particles size of 110 nm or more, the steepness of the particle size distribution is in the range of 1.3-1.55, and dispersing the precipitated calcium carbonate in the composition.

Provided is a flexible organic light emitting element that may include a flexible substrate, a circuit element layer on the flexible substrate, an emission layer on the circuit element layer, a first encapsulation structure between the flexible substrate and the circuit element layer, and a second encapsulation structure on the emission layer, wherein the first encapsulation structure includes a first inorganic layer and a first organic layer, which are sequentially stacked on an upper surface of the flexible substrate, and the first organic layer includes a first polymer nanocomposite.

There is provided a water-based alkaline composition for forming an insulating layer of an annealing separator on a soft magnetic alloy, this composition comprising ceramic particles with a particle size of less than 0.5 m and at least one polymer dispersion as a binding agent, the polymer dispersion comprising one or more mixed polymerisates from the group made up of acrylate polymers, methacrylate polymers, polyvinyl acetate, polystyrene, polyurethane, polyvinyl alcohol, hydroxylated cellulose ether, polyvinyl pyrrolidone, and polyvinyl butyral, and having a pH value of between 8 and 12, preferably between 9 and 11.

A method includes applying a primer applied on a surface of a substrate, applying a nano-particle layer over the primer, and applying a paint layer over the nano-particle layer. The method for removing the paint layer from the substrate includes emitting signals, by an energy source, into the substrate, exciting a nano-particle layer by the signals, generating heat by the nano-particle layer in response to said exciting, and removing the paint layer by the heat.

A composition comprising an emulsion comprising a plurality of particles is provided. An article comprising a substrate, and a plurality of particles comprising a void core and a shell, wherein the plurality of particles are in the form of a coating layer on the substrate is provided. Further, a method for coating a substrate is provided.

According to exemplary embodiments of the present disclosure, products and methods can be provided for 3D printing on the nanoscale with avalanching nanoparticles. For example, polymerizable photoactivated material can be provided into which one or more avalanching nanoparticles can be embedded. With exemplary methods, it is possible to directs a radiation from a continuous wave infrared laser to impact and activate one or more ANPs embedded in the polymerizable photoactivated material.

A paint protection film includes: a substrate layer having a thermoplastic polyurethane; a top coating layer formed on one surface of the substrate layer; an adhesive layer formed on the other surface of the substrate layer; and a nanoparticle layer between the substrate layer and the adhesive layer, and has, in the top coating layer, a fluorine compound, with a glass transition temperature of preferably 10-50 C., formed from a combination of at least one olefin including fluorine and a curing agent, wherein the olefin includes a fluoroethylene olefin and a vinyl ether olefin, and the nanoparticle layer includes preferably 0.5-2 parts by weight of nanosilica on the basis of 100 parts by weight of the nanoparticle layer. The paint protection film has excellent stain resistance, and has excellent durability such as that for elongation, such that painting curved surfaces of an automobile and the like is convenient.