A method for manufacturing a glass wafer for augmented reality applications includes the steps of: providing the raw wafer; edge-grinding of the raw wafer; lapping the raw wafer; rough polishing the raw wafer; fine polishing the raw wafer to obtain an intermediate wafer; gluing the intermediate wafer on a flat carrier; performing single-side polishing of a first main side of the intermediate wafer; and performing single-side polishing of a second main side of the intermediate wafer.

A glass ceramic containing lithium-ions and having a garnet-like main crystal phase having an amorphous proportion of at least 5% is disclosed. The garnet-like main crystal phase preferably has the chemical formula Li.sub.7+xyM.sub.x.sup.IIM.sub.3x.sup.IIIM.sub.2y.sup.IVM.sub.y.sup.VO.sub.12, wherein M.sup.II is a bivalent cation, M.sup.III is a trivalent cation, M.sup.IV is a tetravalent cation, M.sup.V is a pentavalent cation. The glass ceramic is prepared by a melting technology preferably within a Skull crucible and has an ion conductivity of at least 5.Math.10.sup.5 S/cm, preferably of at least 1.Math.10.sup.4 S/cm.

A glass ceramic containing lithium-ions and having a garnet-like main crystal phase having an amorphous proportion of at least 5% is disclosed. The garnet-like main crystal phase preferably has the chemical formula Li.sub.7+xyM.sub.x.sup.IIM.sub.3x.sup.IIIM.sub.2y.sup.IVM.sub.y.sup.VO.sub.12, wherein M.sup.II is a bivalent cation, M.sup.III is a trivalent cation, M.sup.IV is a tetravalent cation, M.sup.V is a pentavalent cation. The glass ceramic is prepared by a melting technology preferably within a Skull crucible and has an ion conductivity of at least 5.Math.10.sup.5 S/cm, preferably of at least 1.Math.10.sup.4 S/cm.

A conductive paste for forming a conductive track or coating on a substrate, the paste comprising a solids portion dispersed in an organic vehicle, the solids portion comprising electrically conductive material and an inorganic particle mixture; wherein the inorganic particle mixture comprises particles of glass frit and substantially crystalline particles of one or more metal compounds; and wherein the glass frit comprises at least 90 mol % Te O.sub.2.

Certain example embodiments relate to seals for glass articles. Certain example embodiments relate to a composition used for sealing an insulted glass unit. In certain example embodiments the composition includes vanadium oxide, barium oxide, zinc oxide, and at least one additional additive. For instance, another additive that is a different metal oxide or different metal chloride may be provided. In certain example embodiments, a composition may be combined with a binder solution that substantially or completely burns out by the time the composition is melted. In certain example embodiments, a vacuum insulated glass unit includes first and second glass substrates that are sealed together with a seal that included the above-described composition.

The present invention discloses a method for preparing all-solid-state photonic crystal fiber preform by extrusion. Firstly, aligning the center of the first jacking end of the first jacking rod with the center of the core outlet mold. The adverse effect on this part of extruded core glass by oxygen or other impurities in air during the extrusion out of the core outlets can be avoided. The defects on the core glass surface and the cladding glass surface can be effectively removed, and the purity and quality of the core component in the obtained fiber preform can be improved.

The present invention discloses a method for preparing all-solid-state photonic crystal fiber preform by extrusion. Firstly, aligning the center of the first jacking end of the first jacking rod with the center of the core outlet mold. The adverse effect on this part of extruded core glass by oxygen or other impurities in air during the extrusion out of the core outlets can be avoided. The defects on the core glass surface and the cladding glass surface can be effectively removed, and the purity and quality of the core component in the obtained fiber preform can be improved.

The present invention relates to a conductive paste for forming a conductive track on a substrate, the paste comprising a solids portion dispersed in an organic medium, the solids portion comprising an electrically conductive material, particles of a glass fit and particles of a tellurium compound. The invention further relates to methods for preparing such a paste, to a method of manufacturing an electrode on a surface of a solar cell, and to a solar cell having an electrode formed thereon.

Glass-based articles comprise stress profiles providing improved scratch resistance. A glass-based article comprises a lithium aluminosilicate composition and a molar ratio of potassium dioxide (K.sub.2O) to sodium dioxide (Na.sub.2O) averaged over a distance from the surface to a depth of 0.4 micrometers that is greater than or equal to 0 and less than or equal to 1.8. The article comprises sodium having a non-zero varying concentration extending from a surface of the glass-based article to a depth of the glass-based article and a spike depth of layer that is greater than or equal to 4 micrometers and less than or equal to 8 micrometers. The article may comprise an average compressive stress of greater than or equal to 150 MPa over a depth from 15 micrometers to 40 micrometers.

A UV-transmitting glass formed of a multi-component oxide, and having at least one of characteristics of an internal transmittance .sub.350-400(%) with respect to light having a wavelength between 350 nm and 400 nm through a 10 mm-thick glass that satisfies .sub.350-40090 (1); an internal transmittance .sub.300-350(%) with respect to light having a wavelength between 300 nm and 350 nm through a 10 mm-thick glass that satisfies .sub.300-35075 (2); and an internal transmittance .sub.260-300(%) with respect to light having a wavelength between 260 nm and 300 nm through a 10 mm-thick glass that satisfies .sub.260-30045 (3).