A process for the preparation of multi-coloured dental restorations is described, in which glasses and glass ceramics with various compositions are given the shapes of dental restorations and colour changes are effected in the glasses and glass ceramics by irradiating them with artificial electromagnetic radiation and subjecting them to a heat treatment.

A process for the preparation of multi-coloured dental restorations is described, in which glasses and glass ceramics with various compositions are given the shapes of dental restorations and colour changes are effected in the glasses and glass ceramics by irradiating them with artificial electromagnetic radiation and subjecting them to a heat treatment.

Disclosed is an antenna on glass (AOG) device having an air cavity at least partially formed in a photosensitive glass substrate. An air cavity structure is at least partially encloses the air cavity and wherein the air cavity structure at least partially formed from the photosensitive glass substrate. An antenna is formed from portion of a top conductive layer disposed on a top surface of the air cavity structure and at least partially overlapping the air cavity. A metallization structure is provided having a bottom conductive layer disposed on a bottom surface of the air cavity structure, wherein the bottom conductive layer is electrically coupled to the top metal layer by a conductive pillar disposed through the photosensitive glass substrate. In addition, the AOG device may integrate one or more MIM capacitors and/or inductors that allow for RF filtering and impedance matching.

An article includes a glass ceramic that has an amorphous silicate glass phase and a crystalline phase including a species of MxWO3 with 0<x<1 and M an intercalated dopant cation. The article further includes an aperture configured to be formed via local heating of a portion of the glass ceramic to a temperature that is above the softening point of the glass ceramic. The aperture comprises constituents of the silicate glass phase and the crystalline phase but is substantially free of the species of MxWO3. A ratio of a transmittance of the aperture to a transmittance of the glass ceramic not subject to the local heating is at least 6,000 with transmittance measured in %/mm at wavelengths from 500 nm to 1100 nm.

Multicolored glass-based articles and methods of manufacture are disclosed. The method includes forming a glass-based part and exposing a first region to radiation and a second region to radiation such that the first and second regions have different sized metallic nanoparticles, resulting in a multicolored glass article.

Multicolored glass-based articles and methods of manufacture are disclosed. The method includes forming a glass-based part and exposing a first region to radiation and a second region to radiation such that the first and second regions have different sized metallic nanoparticles, resulting in a multicolored glass article.

An optical component made of synthetic quartz glass includes a glass structure substantially free of oxygen defect sites and having a hydrogen content of 0.1×10.sup.16 to 1.0×10.sup.18 molecules/cm.sup.3, an SiH group content of less than 2×10.sup.17 molecules/cm.sup.3, a hydroxyl group content of 0.1 to 100 wt. ppm, and an Active temperature of less than 1070° C. The optical component undergoes a laser-induced change in the refractive index in response to irradiation by a radiation with a wavelength of 193 nm using 5×10.sup.9 pulses with a pulse width of 125 ns and a respective energy density of 500 μJ/cm.sup.2 at a pulse repetition frequency of 2000 Hz. The change totals a first measured value M.sub.193 nm when measured using the applied wavelength of 193 nm and a second measured value M.sub.633 nm when measured using a measured wavelength of 633 nm. The ratio M.sub.193 nm/M.sub.633 nm is less than 1.7.

An optical component made of synthetic quartz glass includes a glass structure substantially free of oxygen defect sites and having a hydrogen content of 0.1×10.sup.16 to 1.0×10.sup.18 molecules/cm.sup.3, an SiH group content of less than 2×10.sup.17 molecules/cm.sup.3, a hydroxyl group content of 0.1 to 100 wt. ppm, and an Active temperature of less than 1070° C. The optical component undergoes a laser-induced change in the refractive index in response to irradiation by a radiation with a wavelength of 193 nm using 5×10.sup.9 pulses with a pulse width of 125 ns and a respective energy density of 500 μJ/cm.sup.2 at a pulse repetition frequency of 2000 Hz. The change totals a first measured value M.sub.193 nm when measured using the applied wavelength of 193 nm and a second measured value M.sub.633 nm when measured using a measured wavelength of 633 nm. The ratio M.sub.193 nm/M.sub.633 nm is less than 1.7.

Frontside metallization pastes for solar cell electrodes prepared from glass frit containing rare earth metals such as lanthanum and yttrium are disclosed. Electrodes prepared from the metallization pastes exhibit improved adhesion, reliability, and excellent electrical properties.

Frontside metallization pastes for solar cell electrodes prepared from glass frit containing rare earth metals such as lanthanum and yttrium are disclosed. Electrodes prepared from the metallization pastes exhibit improved adhesion, reliability, and excellent electrical properties.