According to one embodiment, a glass article may include a glass body having a first surface and a second surface opposite the first surface. The first surface of the glass body may be etched to a depth less than or equal to about 25% of the maximum initial flaw depth Ai of a flaw population present in the first surface. The flaw population of the first surface is etched to selectively remove material adjacent to each flaw of the flaw population along the maximum initial flaw depth Ai. When the glass article is under uniaxial compressive loading, at least a portion of the first surface is in tension and a uniaxial compressive strength of the glass article is greater than or equal to 90% of a uniaxial compressive strength of a flaw-free glass article.

A method for treating a lead-containing glass that makes it possible to limit the migration of the lead contained in this glass, the method successively comprising the following distinct steps: a step of placing the lead-containing glass in contact with a solution comprising perchloric acid; a step of heat treatment of the glass at a temperature less than or equal to the glass transition temperature of the glass.

According to one embodiment, a glass article may include a glass body having a first surface and a second surface opposite the first surface. The first surface and the second surface each have a radius of curvature. The first surface of the glass body comprises a flaw population extending from the first surface into a thickness of the glass body with a maximum initial flaw depth Ai. The first surface of the glass body may be etched to a depth less than or equal to about 25% of the maximum initial flaw depth Ai of the flaw population present in the first surface. When the glass article is under uniaxial compressive loading, at least a portion of the first surface is in tension and a uniaxial compressive strength of the glass article is greater than or equal to 90% of a uniaxial compressive strength of a flaw-free glass article.

A composition comprising (i) a matrix comprising a metal oxide, metal sulphide and/or metal selenide as the matrix material, the metal oxide, metal sulphide and/or metal selenide comprising at least two metals M1 and M2, and (ii) a metal M3 which is mobile in the matrix. The atomic ratio of M1 to M2 is within the range of 75:25 to 99.99:0.01; the valence states of M1, M2 and M3 are all positive; the valence state of M1 is larger than the valence state of M2; the valence state of M2 is equal to or larger than the valence state of M3; and the metals M1, M2 and M3 are different.

Embodiments described herein provide for optical devices with methods of forming optical device substrates having at least one area of increased refractive index or scratch resistance. One method includes disposing an etch material on a discrete area of an optical device substrate or an optical device layer, disposing a diffusion material in the discrete area, and removing excess diffusion material to form an optical material in the optical device substrate or the optical device layer having a refractive index greater than or equal to 2.0 or a hardness greater than or equal to 5.5 Mohs.

A method includes impregnating a region of a glass sheet with a filler material in a liquid state. The glass sheet includes a plurality of glass soot particles. The filler material is solidified subsequent to the impregnating step to form a glass/filler composite region of the glass sheet.

A method includes impregnating a region of a glass sheet with a filler material in a liquid state. The glass sheet includes a plurality of glass soot particles. The filler material is solidified subsequent to the impregnating step to form a glass/filler composite region of the glass sheet.

A highly purified quartz powder having a low level of naturally occurring lithium modified for cladding a fiber optic cable, said modified quartz powder having an increased total amount of lithium in solid solution in said powder, said increased total amount being in the range of more than 0.50 ppm and less than 1.00 ppm and a method of modifying an highly purified quartz powder to make the same.

Described is a method of processing an antimicrobial glass substrate. More particularly, described is a method of removing one or more of silver nitrate or silver oxide on the surface of an antimicrobial glass substrate. Also described is a method of manufacturing a glass substrate that is substantially free of yellow discoloration.

Provided is a glass composition having an infrared absorbing function, water resistance, heat resistance, and a low expansion coefficient, the glass composition including the following components (a) to (c): (a) 0.1 wt % or more to 14.0 wt % or less of an intermediate oxide; (b) 0.1 wt % or more to 14.0 wt % or less of CuO; and (c) 80.0 wt % or more to 99.8 wt % or less of silica, in which a total of a content ratio of the intermediate oxide and a content ratio of the CuO is from 0.2 wt % or more to 20 wt % or less.