A method to provide compressive stress to substrates includes depositing a film on a ceramic substrate at a deposition temperature (Td) to form an article, the film having a difference relative to the ceramic substrate at Td in a coefficient thermal expansion (CTE) of at least 1.010.sup.6/K and a difference in a refractive index >0.10. At least a portion of the thickness the film is converted in at least one of composition, phase and microstructure by lowering or raising the temperature from Td to reach a changed temperature (Tc) that is at least 100 C. different from Td. The film converting conditions result in the converted film portion providing a difference in refractive index at the Tc between the converted film and the ceramic substrate of |0.10|. The temperature of the article is then lowered to room temperature.

The invention concerns a method for producing an optical article suitable for edging comprising an antifouling layer on which there is deposited a temporary overlayer for assisting with edging, comprising: depositing, on an optical substrate, an organic antifouling layer comprising at least a fluorinated polymer compound comprising hydrolysable functions; and depositing, on the antifouling layer, an overlayer for assisting with edging, of mineral nature, comprising one or more metal fluorides and/or one or more metal oxides or hydroxides; method characterised in that it further comprises a step of accelerated grafting of the antifouling layer chosen from: (a) a treatment of the deposited antifouling layer in a humid atmosphere of the deposited antifouling layer and (b) a catalytic treatment in the acidic or basic vapour phase of the deposited antifouling layer.

An optical filter and a method for forming the same are provided. The optical filter includes a substrate and a plurality of filter stacks formed on the substrate. Each of the plurality of filter stacks includes a higher-refractive-index layer, a medium-refractive-index layer, and a lower-refractive-index layer. The higher-refractive-index layer has a first refractive index of higher than 3.5. The medium-refractive-index layer is disposed on the higher-refractive-index layer. The medium-refractive-index layer has a second refractive index higher than 2.9 and lower than the first refractive index. The lower-refractive-index layer is disposed on the medium-refractive-index layer. The lower-refractive-index layer has a third refractive index lower than the second refractive index.

A window with low frictive compositions and methods of making the same. The low frictive composition is applied to top portion of at least one glass bump contacting an opposing pane in a window. The low frictive composition may include an inorganic powder and a binder. The inorganic powder includes disulfide, molybdenum disulfide, tungsten diselenide, and molybdenum diselenide. The binder includes silsesquioxanes and alkali silicates.

Disclosed herein is a transparent glass system that includes an optical grade silicon substrate, and a nanocrystalline diamond film on the silicon substrate, the diamond film deposited using a chemical vapor deposition system having a reactor in which methane, hydrogen and argon source gases are added. Further disclosed is a method of fabricating transparent glass that includes the steps of seeding an optical grade silicon substrate and forming a nanocrystalline diamond film on the silicon substrate using a chemical vapor deposition system having a reactor in which methane, hydrogen and argon source gases are added.

Disclosed herein are graphene coatings characterized by a porous, three-dimensional, spherical structure having a hollow core, along with methods for forming such graphene coatings on glasses, glass-ceramics, ceramics, and crystalline materials. Such coatings can be further coated with organic or inorganic layers and are useful in chemical and electronic applications.

Disclosed herein are methods for transferring a graphene film onto a substrate, the methods comprising applying a polymer layer to a first surface of a graphene film, wherein a second surface of the graphene film is in contact with a growth substrate; applying a thermal release polymer layer to the polymer layer; removing the growth substrate to form a transfer substrate comprising an exposed graphene surface; and contacting the exposed graphene surface with a target substrate. Transfer substrates comprising a graphene film, a thermal release polymer layer, and a polymer layer are also disclosed herein.

A glass ceramic item, intended in particular for use with at least one light source and/or at least one heating element, includes at least one substrate, such as a plate, made of glass ceramic, and having at least one light region. The substrate is coated with respect to the region with a paint consisting of at least one silicone resin and pigment(s). The content of the pigment(s) are greater than or equal to 1% and less than 10% by weight of the paint. A method for producing such an item is also included.

The present invention relates in part to short-wave IR (SWIR) materials comprising generic mixed salts of empirical formula A.sub.aB.sub.bM.sub.cX.sub.d that are composition-dependent, broadband, and tunable. These materials have unique light absorbance wavelengths from 0.4 to 2.6 m, including both the visible and SWIR. The preparation procedure for the SWIR materials is simple, including the use of widely available, cheap, and non-toxic precursors, unlike existing state of the art alloy SWIR materials. These novel materials have broad applications in security, surveillance, military, machine vision, photovoltaic solar cells, medical treatments, spectroscopy detector, and thermography. The present invention also relates to methods of fabricating a film comprising the composition of the invention and to photovoltaic stacks comprising the composition of the invention.

An electronic device may include electrical components and other components mounted within a housing. The device may have a display on a front face of the device and may have a glass layer that forms part of the housing on a rear face of the device. The glass layer and other glass structures in the electronic device may be provided with coatings. An interior coating on a glass layer may include multiple layers of material such as an adhesion promotion layer, thin-film layers of materials such as silicon, niobium oxide and other metal oxides, and metals to help adjust the appearance of the coating. A metal layer may be formed on top of the coating to serve as an environmental protection layer and opacity enhancement layer. In some configurations, the coating may include four layers.