Abstract: Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.

Abstract: A composition includes: 30 mol % to 60 mol % SiO2; 15 mol % to 35 mol % Al2O3; 5 mol % to 25 mol % Y2O3; 0 mol % to 20 mol % TiO2; and 0 mol % to 25 mol % R2O, such that R2O is the sum of Na2O, K2O, Li2O, Rb2O, and Cs2O.

Abstract: A glass composition includes: from 55.0 mol % to 70.0 mol % SiO2; from 12.0 mol % to 20.0 mol % Al2O3; from 5.0 mol % to 15.0 mol % Li2O; and from 4.0 mol % to 15.0 mol % Na2O. The glass composition has the following relationships ?8.00 mol %?R2O+RO?Al2O3?B2O3?P2O5??1.75 mol %, 9.00?(SiO2+Al2O3+Li2O)/Na2O, and (Li2O+Al2O3+P2O5)/(Na2O+B2O3)?3.50. The glass composition may be used in a glass article or a consumer electronic product.

Abstract: A glass composition includes: from 55.0 mol % to 70.0 mol % SiO2; from 12.0 mol % to 20.0 mol % Al2O3; from 5.0 mol % to 15.0 mol % Li2O; and from 4.0 mol % to 15.0 mol % Na2O. The glass composition has the following relationships ?8.00 mol %?R2O+RO?Al2O3?B2O3?P2O5??1.75 mol %, 9.00?(SiO2+Al2O3+Li2O)/Na2O, and (Li2O+Al2O3+P2O5)/(Na2O+B2O3)?3.50. The glass composition may be used in a glass article or a consumer electronic product.

Abstract: A composition includes 30 mol % to 60 mol % SiO2; 15 mol % to 40 mol % Al2O3; 5 mol % to 25 mol % Y2O3; 5 mol % to 15 mol % TiO2; and 0.1 mol % to 15 mol % RO, such that RO is a sum of MgO, CaO, SrO, and BaO.

Abstract: Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.

Abstract: Glass-based articles comprise stress profiles providing improved fracture resistance. The glass-based articles herein provide high fracture resistance after multiple drops.

Abstract: A composition includes 30 mol % to 60 mol % SiO2; 15 mol % to 40 mol % Al2O3; 5 mol % to 25 mol % Y2O3; 5 mol % to 15 mol % TiO2; and 0.1 mol % to 15 mol % RO, such that RO is a sum of MgO, CaO, SrO, and BaO.

Abstract: A glass composition includes from 55.0 mol % to 75.0 mol % SiO2; from 8.0 mol % to 20.0 mol % Al2O3; from 3.0 mol % to 15.0 mol % Li2O; from 5.0 mol % to 15.0 mol % Na2O; and less than or equal to 1.5 mol % K2O. The glass composition has the following relationships: Al2O3+Li2O is greater than 22.5 mol %, R2O+RO is greater than or equal to 18.0 mol %, R2O/Al2O3 is greater than or equal to 1.06, SiO2+Al2O3+B2O3+P2O5 is greater than or equal to 78.0 mol %, and (SiO2+Al2O3+B2O3+P2O5)/Li2O is greater than or equal to 8.0. The glass composition may be used in a glass article or a consumer electronic product.

Abstract: A glass composition includes about 60 mol. % to about 80 mol. % SiO2, 0 mol. % to about 11 mol. % Al2O3, about 4.0 mol. % to about 12 mol. % B2O3, about 0.5 mol. % to about 20 mol. % of K2O, 0 mol. % to about 18.5 mol. % MgO, and 0 mol. % to about 1 mol. % SnO2. The glass composition has a range of CTE, which can be adjusted based on the composition, and can be used for display applications.

Abstract: A method of fabricating an optical fiber, the method including providing a core portion including a doped portion having greater than or equal to 1.6 wt. % of a halide dopant and eliminating seed precursor sites at an exterior surface of the core portion, the seed precursor sites forming seeds in the optical fiber, wherein the eliminating the seed precursor sites includes one or more of: (i) fabricating the core portion by densifying an exterior portion of a silica soot body prior to exposing the silica soot body to the halide dopant, and (ii) exposing the exterior surface of the core portion to a reactive etchant. The method further including forming an optical fiber preform by applying cladding material to the exterior surface of the core portion and drawing the fiber preform into the optical fiber.

Abstract: A glass substrate formed from a glass composition is disclosed. In embodiments, the composition comprises: from 60 mol. % to 75 mol. % SiO2; from 2 mol. % to 15 mol. % Li2O; from 1.9 mol. % to 15 mol. % Y2O3; and at least one of B2O3 and Na2O. B2O3+Na2O is from 2 mol. % to 13 mol. %. Y2O3+Al2O3 is from 10 mol. % to 24 mol. %. A ratio R2O/Al2O3 is from 0.5 to 4, where R2O is a total concentration of Li2O, Na2O, K2O, Rb2O, and Cs2O. (R2O+RO)/Al2O3 is from 0.5 to 4.5, where RO is a total concentration of BeO, MgO, CaO, SrO, and BaO. The glass substrate has a Young's modulus from 75 gigapascals (GPa) to 110 GPa. The glass substrate is ion exchangeable to form a strengthened glass article.

Abstract: A glass composition includes from 55.0 mol % to 75.0 mol % SiO2; from 8.0 mol % to 20.0 mol % Al2O3; from 3.0 mol % to 15.0 mol % Li2O; from 5.0 mol % to 15.0 mol % Na2O; and less than or equal to 1.5 mol % K2O. The glass composition has the following relationships: Al2O3+Li2O is greater than 22.5 mol %, R2O+RO is greater than or equal to 18.0 mol %, R2O/Al2O3 is greater than or equal to 1.06, SiO2+Al2O3+B2O3+P2O5 is greater than or equal to 78.0 mol %, and (SiO2+Al2O3+B2O3+P2O5)/Li2O is greater than or equal to 8.0. The glass composition may be used in a glass article or a consumer electronic product.

Abstract: Phosphate glasses and glass-ceramics exhibit a positive percent kill as measured by United States EPA Test Method for Efficacy of Copper Alloy Surfaces as a Sanitizer and/or have a CIELAB L* value below 35, CIELAB a* and b* values within 5 of zero.

Abstract: A glass includes from 42 mol % to 47 mol % P2O5, from 42 mol % to 48 mol % CuO, and from greater than 0 mol % to 15 mol % Fe2O3. The glass is an amorphous, single-phase glass. Methods of making a glass article include heating batch materials to a melting temperature from 900° C. to 1350° C. In aspects, methods include pouring the molten glass in an inert gaseous environment, and cooling the molten glass in the inter gaseous environment. In aspects, methods include cooling the molten glass to form the glass article and annealing the glass article without growing crystals in or on the glass article during the cooling or the annealing.

Abstract: A glass-ceramic that includes a first crystal phase including (MgxZn1-x)Al2O4, where x is ?1, and a second crystal phase including tetragonal ZrO2. The glass-ceramic may be substantially free of arsenic, tin, antimony, and cesium, each of the arsenic, tin, antimony, and cesium present at less than 0.01% (by mole of oxide). Further, the glass-ceramic may include a transmittance of at least about 80% to light having a wavelength of 380 nm to 760 nm.

Abstract: An alkali-free glass including greater than or equal to 65.0 mol % SiO2, mol % RO/mol % Al2O3 less than 0.7 (where RO can include divalent oxides MgO, CaO, SrO, BaO, or combinations thereof), RO less than or equal to 14 mol %, and the absolute value of a slope dE/dTf of a line extending between a first endpoint and a second endpoint less than or equal to 10.0221 GPa/° C. The first endpoint is a Young's modulus at a fictive temperature of the annealing point temperature and the second endpoint is a Young's modulus at a fictive temperature of the strain point temperature, and the slope is a change in Young's modulus (GPa) per 1° C. change in fictive temperature. RO is a total amount of alkali earth metal oxides. A glass article is also disclosed.

Abstract: A glass composition includes about 50 mol. % to about 75 mol. % SiO2, 11.1 mol. % to about 25 mol. % Al2O3, about 1.5 mol. % to about 10 mol. % B2O3, and about 0.5 mol. % to about 20 mol. % of R2O, which is an alkali metal oxide selected from the group consisting of K2O, Rb2O, Cs2O, and a combination thereof. The glass composition may further include 0 mol. % to about 12 mol. % MgO, 0 mol. % to about 10 mol. % CaO, 0 mol. % to about 1.5 mol. % SrO, and 0 mol. % to about 5 mol. % BaO. The glass composition comprises about 1 mol. % to about 20 mol. % R?O in total, which includes MgO, CaO, SrO, BaO, and any combination thereof. The glass composition has low CTE, low liquidus temperature, and high liquidus viscosity, and is used for display applications.

Abstract: A glass composition and substrate are provided. The glass substrate can include about 50 to about 80 mole percent of SiO2; about 1 to about 30 mole percent of Al2O3; 0 to about 30 mole percent of B2O3; about 1.0 to about 10.1 mole percent of P2O5; and about 10.5 to about 15.7 mole percent of SrO, BaO, K2O, or a combination thereof, and wherein the composition includes less than about 5 mole percent of ZnO, MgO, CaO, or a combination thereof. A device incorporating the glass substrate is also provided.

Abstract: An opaque gahnite-spinel glass ceramic is provided. The glass ceramic includes a first crystal phase including (MgxZn1-x)Al2O4 where x is less than 1 and a second crystal phase includes at least one of tetragonal ZrO2, MgTa2O6, mullite, and cordierite. The glass ceramic has a Young's modulus greater than or equal to 90 GPa, and has a hardness greater than or equal to 7.5 GPa. The glass ceramic may be ion exchanged. Methods for producing the glass ceramic are also provided.