Abstract:
The invention provides materials and methods for forming coatings on substrates. The coatings are durable and resistant to damage from environmental, chemical, thermal, and/or radiative sources. In some embodiments, the coatings comprise bilayers of electrostatically charged materials. The bilayers are created by alternately applying solutions comprising water-soluble, electrostatically charged materials. Durability is imparted to the coatings by the formation of crosslinks that are formed within and between layers after deposition of the coatings.
Abstract:
A device for forming a self-assembled film on a substrate containing a film precursor includes a first heating member and a second heating member disposed adjacent to the first heating member, the second heating member being separated from the first heating member by a gap. The device includes a movable pusher member configured for advancing the substrate from the first heating member to the second heating member.
Abstract:
Ultra thin organo-ceramic and metal oxide films are prepared under room temperature and atmospheric conditions by exposing .alpha., .omega.--functional siloxane oligomers and fatty acid metal soaps, respectively, to a combination of ultraviolet light (UV) and ozone (O.sub.3). The process includes the steps of preparing ultra thin .alpha., .omega.--functional polysiloxane and fatty acid metal soap films using, but not limited to, the Langmuir-Blodgett (LB) technique. The LB technique permits construction of molecular monolayer or multilayer films on a variety of substrates. By using carboxylic acid end groups on the siloxane oligomers, metal ions can be incorporated into the SiO.sub.x film after UV-ozone exposure. This technique can be used to make electronically, optically, and chemically important organo-ceramic and metal oxide films on temperature sensitive substrates.
Abstract:
The present invention relates to a solution for catalytic treatment, which is effective for applying a catalyst-metal onto the surface of a substrate, which can provide a film having excellent properties such as adhesion, precision and selectivity through electroless plating or the like, and which does not cause a premature and undesirable decomposition in a bath. The solution for catalytic treatment comprises a catalyst-metal in the form of ions, which permits the deposition of the metal serving as a catalyst on a substrate by applying the solution onto the surface of the substrate and then irradiating the substrate with light rays. The present invention also relates to a method of applying a catalyst onto a substrate and a method of forming an electrical conductor in which such a solution for catalytic treatment is employed.
Abstract:
A layer of a hydrocarbon molecule is applied to a substrate by the Langmuir-Blodgett technique, and the surface is irradiated with a laser to decompose the layer of molecules at the surface without influencing the substrate. After decomposition the carbon atoms rearrange on the surface of the substrate to form a DLC film. The method of the invention may also be used to form other film, using a suitable molecule to produce the LB layer before irradiation.
Abstract:
In an example, a method including dispensing a liquid onto a first portion of a surface of a substrate and dispensing a solution comprising colloidal spheres onto a second portion of the surface of the substrate. The method additionally includes agitating the colloidal spheres to disperse the colloidal spheres along the first portion and the second portion of the surface of the substrate and directing air flow above the colloidal spheres inducing rotation of the colloidal spheres. In another example, a method includes positioning a retaining ring on a surface of a liquid above a substrate below the surface of the liquid and dispensing a solution comprising colloidal spheres onto the surface of the liquid within a surface area of the retaining ring. The method further includes agitating the surface of the liquid and the colloidal spheres to disperse the colloidal spheres along the surface area of the retaining ring.
Abstract:
A method of forming a self-assembled film with periodic nanometer dimension features (e.g., holes) on a substrate includes the steps of providing film precursors on the substrate, wherein the film precursors are maintained in an amorphous state. Where the film precursors are block copolymers, a heating member is provided. The substrate and the heating member are then moved relative to one another so as to raise the temperature of a portion of the film precursor on the substrate above its glass transition temperature. Relative movement between the substrate and heating member continues until a self-assembled crystalline film is formed over the surface of the substrate. In an alternative embodiment, a pH dispensing member is provided to dispense a pH adjusting agent onto the substrate that promotes self-assembly of a crystalline film.
Abstract:
The invention provides a method for synthesizing a titanium oxide-containing film comprising the following steps: (a) preparing an aqueous solution of a titanium chelate with a titanium molarity in the range of 0.01M to 0.6M. (b) immersing a substrate in the prepared solution, (c) decomposing the titanium chelate to deposit a film on the substrate. The titanium chelate maybe decomposed acid, base, temperature or other means. A preferred method provides for the deposit of adherent titanium oxide films from C2 to C5 hydroxy carboxylic acids. In another aspect the invention is a novel article of manufacture having a titanium coating which protects the substrate against ultraviolet damage. In another aspect the invention provides novel semipermeable gas separation membranes, and a method for producing them.
Abstract:
Ultra thin organo-ceramic and metal oxide films are prepared under room temperature and atmospheric conditions by exposing .alpha.,.omega.-functional siloxane oligomers and fatty acid metal soaps, respectively, to a combination of ultraviolet light (UV) and ozone (O.sub.3). The process includes the steps of preparing ultra thin .alpha.,.omega.-functional polysiloxane and fatty acid metal soap films using, but not limited to, the Langmuir-Blodgett (LB) technique. The LB technique permits construction of molecular monolayer or multilayer films on a variety of substrates. By using carboxylic acid end groups on the siloxane oligomers, metal ions can be incorporated into the SiOx film after UV-ozone exposure. This technique can be used to make electronically, optically, and chemically important organo-ceramic and metal oxide films on temperature sensitive substrates.
Abstract:
Method for pore sealing a porous substrate, comprising: forming a continuous monolayer of a polyimide precursor on a liquid surface, transferring said polyimide precursor monolayer onto the porous substrate with the Langmuir-Blodgett technique, and imidization of the transferred polyimide precursor monolayers, thereby forming a polyimide sealing layer on the porous substrate. Porous substrate having at least one surface on which a sealing layer is provided to seal pores of the substrate, wherein the sealing layer is a polyimide having a thickness of a few monolayers and wherein there is no penetration of the polyimide into the pores.