A high-damping stiffness-variable lattice composite structure shock absorber, and a preparation method therefor. The shock absorber is composed of a lattice composite structure and a base, wherein the lattice composite structure is formed by compositing a lattice metal and a viscoelastic material. The adjustment and control range of the porosity of the lattice metal is 30-90%; the hole edge diameter of the lattice metal is 1-3 mm; and the minimum hole diameter is 0.8-2.5 mm. The matrix material of the lattice metal is a steel material; and the matrix material of the viscoelastic material is an epoxy resin or polyurethane.

A coating including an ordered spatial distribution of a plurality of nanoparticles; and a polymer medium is disclosed. Also disclosed is an article, such as an optical device, can include the coating, on a substrate. A multilayer structure can include the coating with a high refractive index layer adjacent to the coating. A method of making the coating, the article, and the multilayer structures is disclosed.

Luminescent greenhouse glazing structures are described wherein the glazing structures comprise: a glass pane for a greenhouse; and, one or more Eu.sup.2+ doped amorphous inorganic luminescent thin film layers provided over the glass pane, wherein the one or more Eu.sup.2+ doped amorphous inorganic luminescent layers comprise or consist essentially of the elements Al and/or Si and the elements O and/or N; and, wherein the Si concentration is selected between 0 and 45 at. %, the Al concentration between 0 and 50 at. %, the O concentration between 0 and 70 at. %, the N concentration between 0 and 60 at. % and the Eu.sup.2+ between 0.01 and 30 at. %.

The present invention relates to a floor material which is manufactured to be aesthetically pleasing and have water resistance, durability, chemical resistance, scratch resistance, and stain resistance, and is used as a finish to the floor of a building. The floor material is characterized by comprising: a floorboard layer which forms the basic skeleton of the floor material; a decorative film layer which is laminated on an upper surface portion of the floorboard layer and provides an aesthetically pleasing design with various patterns and colors; and a UV coating film layer which is a film having a nano silica hybridized UV coating layer formed on an upper surface portion to provide scratch resistance and stain resistance, and which is laminated on the upper dace portion of the decorative film layer and forms the uppermost layer of the floor material.

The present invention provides a polyimide varnish comprising a dianhydride monomer and a diamine monomer as polymerization units, wherein the diamine monomer comprises a first diamine monomer and a second diamine monomer, and the second diamine monomer is represented by the following Chemical Formula 1. The polyimide varnish of the present invention has excellent adhesion and adherence to wires such as copper, and thus has excellent usability as an insulating coating material for an electric wire, etc.

##STR00001## in Chemical Formula 1 above,

A may be unsubstituted or substituted, and is hydrogen, halogen, C.sub.1-C.sub.6 alkyl, phenyl, (C.sub.1-C.sub.6 alkylene)-(C.sub.3-C.sub.5 heteroaryl), (C.sub.1-C.sub.6 alkylene)-COOH, or OH, wherein the substitution means substitution with halogen, C.sub.1-C.sub.3 alkyl, C.sub.1-C.sub.3 haloalkyl or oxo (O).

Disclosed herein are highly solar-reflective passive radiative cooling materials in powder form based on calcium phosphates. These materials can be synthesized at a low material cost approaching that of paint additives available on the market, and they are safe, non-toxic, and environmentally-friendly. These materials achieve solar reflectance values ranging from 93% to nearly 98%, making them extremely effective passive radiative cooling materials.

The thermal interface material (TIM) system of the present disclosure includes a thermal pad having a thermoplastic elastomeric copolymer coupled to a thermally conductive nanoparticle. The thermoplastic elastomeric copolymer may include glassy and rubbery polymers. In a specific example, the thermoplastic elastomeric copolymer may include a pseudo-bicontinuous morphology of polymer blends, such as polystyrene (PS) and/or polyisoprene (PI). In a more specific example, the thermoplastic elastomeric copolymer may include a triblock copolymer of polystyrene-block-polyisoprene-block-polystyrene (SIS). The thermally conductive nanoparticle may be non-electrically conductive. The thermally conductive nanoparticle may include 2D boron nitride (BN). The thermally conductive nanoparticle may include a metallic filler material such as gold (Au).

A dielectric that has excellent electrical characteristics and causes no blistering of a copper foil during production of a copper-clad laminate using the dielectric, and a method for producing the same are provided. Further, a copper-clad laminate using the dielectric, and a method for producing the same are provided. The dielectric has a residual organic matter content of 500 g/g or less. The metal-clad laminate has the dielectric and a metal foil.

A dielectric that has excellent electrical characteristics and causes no blistering of a copper foil during production of a copper-clad laminate using the dielectric, and a method for producing the same are provided. Further, a copper-clad laminate using the dielectric, and a method for producing the same are provided. A dielectric has a moisture content of 1000 g/g or less. The metal-clad laminate has the dielectric and a metal foil.

Disclosed here are a method of marking a dark-colored surface with a dark-colored LiDAR-reflective material and a marking composition comprising the dark-colored LiDAR-reflective material and a marking carrier. Particularly, the dark-colored LiDAR-reflective material comprises has a reflectivity in the visible spectrum of electromagnetic radiation that is 10% and a reflectivity in the near-IR and LiDAR spectrum of electromagnetic radiation that is 10%.