In a method of manufacturing a glass film, in a cutting step, a crack (CR) formed in a non-product portion (Gc1, Gc2) along a longitudinal direction of a glass film (G2) is guided by a guiding member (17a, 17b) so as to propagate to an outer end portion (Gd) of the non-product portion (Gc1, Gc2) in a width direction.

Apparatuses for making a laminated glass ribbon may include an upper forming body including an outer forming surface bounded by a pair of upper dams, and a lower forming body disposed downstream of the upper forming body and including an outer forming surface spaced from the outer forming surface of the upper forming body by an interior gap. An edge guide may be disposed along an interior upper dam wall and spaced apart in the interior gap from the lower forming body. Surfaces exterior to the outer forming surfaces of the upper and lower forming bodies may abut and be joined. A formed glass ribbon having a core glass layer and a pair of clad glass layers may include inner and outer portions that have substantially equal thickness ratios based on a glass core layer thickness compared to a combined glass cladding layer thickness in each portion.

Methods of manufacturing a glass ribbon include moving a ribbon of glass-forming material along a travel path in a travel direction. Methods include sensing a thickness of the ribbon of glass-forming material at a plurality of locations of the ribbon of glass-forming material. Methods include identifying a location of the plurality of locations in which a corresponding thickness at the location exceeds a target thickness. Methods include correlating a rate of thickness change and a thickness difference between the corresponding thickness and the target thickness to a laser power. Methods include directing a laser beam at the laser power toward the ribbon of glass-forming material to decrease a viscosity at the location and attain the target thickness at the location.

A standalone lithium ion-conductive sulfide solid electrolyte can include a freestanding inorganic vitreous sheet of sulfide-based lithium ion conducting glass capable of high performance in a lithium metal battery by providing a high degree of lithium-ion conductivity while being highly resistant to the initiation and/or propagation of lithium dendrites. Such an electrolyte is also itself manufacturable, and readily adaptable for battery cell and cell component manufacture, in a cost-effective, scalable manner. Methods of making and using the electrolyte, and battery cells and cell components incorporating the electrolyte are also disclosed.

A method of manufacturing a glass article includes a forming step of causing a first molten glass (Gm1) including P.sub.2O.sub.5 to flow down along a surface of a forming trough (15) including an yttrium-containing oxide by a down-draw method to form a glass ribbon (G), wherein the forming trough (15) includes a Mg-rich layer (MR) serving as a diffusion suppression layer for suppressing diffusion of the yttrium-containing oxide on the surface thereof.

A method and apparatus for manufacturing a glass article includes flowing a glass ribbon through a housing having first and second side walls. The first and second side walls extend between the glass ribbon and a cooling mechanism and at least one of the side walls has at least one closeable opening, such that a greater amount of heat is transferred from the glass ribbon when the closeable opening is open than when the closeable opening is closed.

Alkali-doped boroaluminosilicate glasses are provided. The glasses include the network formers SiO.sub.2, B.sub.2O.sub.3, and Al.sub.2O.sub.3. The glass may, in some embodiments, have a Young's modulus of less than about 65 GPa and/or a coefficient of thermal expansion of less than about 40×10.sup.−7/° C. The glass may be used as a cover glass for electronic devices, a color filter substrate, a thin film transistor substrate, or an outer clad layer for a glass laminate.

A method of reducing bubble lifetime on the free surface of a volume of molten glass contained within or flowing through a vessel including a free volume above the free surface, thereby, minimizing re-entrainment of the bubbles back into the volume of molten glass and reducing the occurrence of blisters in finished glass products.

A glass substrate of the present invention has a temperature at a viscosity at high temperature of 10.sup.2.5 dPa.Math.s of 1,650° C. or less, and an estimated viscosity Log η.sub.500 at 500° C. of 26.0 or more calculated by the equation Log η.sub.500=0.167×Ps−0.015×Ta−0.062×Ts−18.5.

A glass substrate of the present invention has a temperature at a viscosity at high temperature of 10.sup.2.5 dPa.Math.s of 1,650° C. or less, and an estimated viscosity Log η.sub.500 at 500° C. of 26.0 or more calculated by the equation Log η.sub.500=0.167×Ps−0.015×Ta−0.062×Ts−18.5.