The disclosure relates to omniphobic surface coatings including a solution of fluor-modified polymer and crystalline and/or semi-crystalline polymer and/or inorganic nanoparticles. The disclosure further relates to biphilic substrate surfaces for heat exchangers, including 50-95% of the surface showing a first solid-liquid contact angle and 5 to 50% of the surface showing a second solid-liquid contact angle, wherein the second liquid-solid contact angle is at least 10 higher than first liquid-solid contact angle, and the surface area of second contact angle includes a multitude of discrete surface areas of second contact angle dispersed over the substrate surface.

An antifouling structure of the present invention includes: a non-volatile liquid; a microporous structure layer retaining the non-volatile liquid; and a base with the microporous structure layer on a surface of the base.

A surface roughness (Rz) of the microporous structure layer and a film thickness (T) of the non-volatile liquid satisfy Rz<T.

The automobile part with an antifouling structure of the present invention includes the above-described antifouling structure.

Article comprising, in order, a substrate, a hardcoat comprising: a binder; and a mixture of nanoparticles in a range from 60 wt. % to 90 wt. %, based on the total weight of the hardcoat, wherein a range from 10 wt. % to 50 wt. % of the nanoparticles comprise a first group of nanoparticles having an average particle diameter in a range from 2 nm to 200 nm, and in a range from 50 wt. % to about 90 wt. % of the nanoparticles comprise a second group of nanoparticles having an average particle diameter in a range from 60 nm to 400 nm, based on the total weight of nanoparticles in the hardcoat, and having a ratio of the average particle size of the first group of nanoparticles to the average particle size of the second group of nanoparticles are in a range from 1:2 to 1:200; a layer comprising SiO.sub.xC.sub.y, where 0<x<2 and 0<y<1; and a hydrophilic layer. Articles described herein are useful, for example, for optical displays (e.g., cathode ray tubes (CRT) and light emitting diode (LED) displays), personal digital assistants (PDAs), cell phones, liquid crystal display (LCD) panels, touch-sensitive screens, removable computer screens, window films, and goggles.

A self-cleaning film system includes a substrate and a self-cleaning film disposed on the substrate. The self-cleaning film includes a monolayer formed from an oleophobic material, and a first plurality of regions disposed within the monolayer in a non-periodic pattern such that each of the first plurality of regions abuts and is surrounded by the oleophobic material. Each of the first plurality of regions includes a photocatalytic material.

An anti-bacterial photocatalytic apparatus includes one three dimensional object and one photocatalytic film. The three dimensional object is coated at least partially on the surface with the photocatalytic film. The thickness of the three dimension object underneath the photocatalytic film is at least 20 m. The transparency of the photocatalytic film is at least 90%, and the thickness of the photocatalytic film is at least 300 nm. Moreover, the photocatalytic film is photocatalytic activated by ambient light with at least 95% of a spectral power distribution (SPD) in the visible light wavelength range greater than 400 nm. When such photocatalytic apparatus is disposed in an indoor environment with normal lighting, the apparatus is photocatalytic activated and can kill the bacteria and the viruses left by people through making contact with the apparatus.

The liquid-repellent structure comprises a major surface to which liquid repellency is imparted, and a liquid-repellent layer formed on the major surface; wherein the liquid-repellent layer contains a scale-like filler having an average particle size of 0.1 to 6 ?m, inclusive, a thermoplastic resin, and a fluorine compound, and has aggregates containing the scale-like filler; and the ratio W.sub.S1/(W.sub.P+W.sub.FC) of the mass W.sub.S1 of the scale-like filler contained in the liquid-repellent layer to the sum (W.sub.P+W.sub.FC) of the mass W.sub.P of the thermoplastic resin and the mass W.sub.FC of the fluorine compound contained in the liquid-repellent layer is 0.1 to 10 inclusive.

Described herein are coating compositions having unique mechanical and physical properties. The coating compositions are composed of zinc oxide nanoparticles, copper nanoparticles, a perfluorolkylsiloxane, and an organic solvent. The coating compositions can be applied to any article or any surface of an article where it is desirable to reduce surface wettability or prevent the growth of bacteria.

A hydrophobic-icephobic composition includes a monomer binder, an organic solvent, and a hydrolyzed organosilane. The hydrolyzed organosilane is represented by a formula of R.sup.1Si(OH).sub.3. The R.sup.1 group comprises an alkyl or a haloalkyl having from 3 to 40 carbons. A hydrophobic-icephobic coating over a substrate includes a polymer base and a polyorganosiloxane. The polyorganosiloxane includes (R.sup.1SiO.sub.2)- units. The R.sup.1 group includes an alkyl or a haloalkyl having from 3 to 40 carbons. One or more of the (R.sup.1SiO.sub.2)- units of the polyorganosiloxane are may be chemically bonded to the substrate.

Photosensitive compositions containing nanosized light emitting materials and (meth)acrylic polymer are suitable for use in a variety of optical applications, for example the preparation of quantum material doped photoresist films, especially for optical devices. Optical films can be prepared be by: a) providing the photosensitive composition onto a substrate, and b) polymerizing the photosensitive composition by exposing the photosensitive composition to radiation.

Two-component polycarbonate-based composite products are contemplated in which the composite is formed as the cured reaction product of a polycarbonate polyurethane dispersed within an aqueous colloid along with a coalescent agent, a secondary polymer additive dispersed within the aqueous colloid, and a secondary polymer crosslinker. The aqueous colloidal dispersion may be applied as a coating to a surface that is intended to be coated and subsequently permitted to react and dry, resulting in the formation of a coating at the location at which it is applied. The composite product may be further formulated with additional constituents to be optically clear, glossy, and/or pigmented.