A filter glass contains >1.1 to 6.0 wt % Li.sub.2O and at least one further component selected from Na.sub.2O and K.sub.2O, and includes the following composition (in wt % based on oxide): 55.0-75.0 P.sub.2O.sub.5, 4.1-8.0 Al.sub.2O.sub.3, 8.0-18.0 CuO, 0-<0.8 V.sub.2O.sub.5, ≤2.0 SiO.sub.2, ≤2.0 F, 0-11.0 Total R′O (R′=Mg, Ca, Sr, Ba, Zn), and 3.0-17.0 Total R.sub.2O (R=Li, Na, K).

A filter glass contains >1.1 to 6.0 wt % Li.sub.2O and at least one further component selected from Na.sub.2O and K.sub.2O, and includes the following composition (in wt % based on oxide): 55.0-75.0 P.sub.2O.sub.5, 4.1-8.0 Al.sub.2O.sub.3, 8.0-18.0 CuO, 0-<0.8 V.sub.2O.sub.5, ≤2.0 SiO.sub.2, ≤2.0 F, 0-11.0 Total R′O (R′=Mg, Ca, Sr, Ba, Zn), and 3.0-17.0 Total R.sub.2O (R=Li, Na, K).

Provided is a sulfide solid electrolyte containing lithium, phosphorus, sulfur and chlorine, in which a molar ratio of the chlorine to the phosphorus, c (Cl/P), is greater than 1.0 and 1.9 or less, the sulfide solid electrolyte includes an argyrodite-type crystal structure, and a lattice constant of the argyrodite-type crystal structure is 9.820 Å or less.

The present disclosure provides a glass composition that include from about 50 mol % to about 95 mol % of B2O3; from about 5 mol % to about 50 mol % of one or more glass components selected from the group consisting of: Li2O, Rb2O, K2O, Na2O, SrO, CaO, MgO, and ZnO. The glass composition includes less than 30 mol % of Rb2O. The glass composition is a quaternary system. The glass composition is a particulate material that includes particles that are from about 1 to about 50 μm in size. The glass composition loses at least 5 mass % within 24 hours when exposed to a buffered saline solution. The glass composition may be used to desensitize dentin. The present disclosure also provides a dentin-desensitizing composition.

The present disclosure provides a glass composition that include from about 50 mol % to about 95 mol % of B2O3; from about 5 mol % to about 50 mol % of one or more glass components selected from the group consisting of: Li2O, Rb2O, K2O, Na2O, SrO, CaO, MgO, and ZnO. The glass composition includes less than 30 mol % of Rb2O. The glass composition is a quaternary system. The glass composition is a particulate material that includes particles that are from about 1 to about 50 μm in size. The glass composition loses at least 5 mass % within 24 hours when exposed to a buffered saline solution. The glass composition may be used to desensitize dentin. The present disclosure also provides a dentin-desensitizing 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.

A method of forming a sealed device comprising providing a first substrate having a first surface, providing a second substrate adjacent the first substrate, and forming a weld between an interface of the first substrate and the adjacent second substrate, wherein the weld is characterized by ((.sub.tensile stress location)/(.sub.interface laser weld))<<1 or <1 and .sub.interface laser weld>10 MPa or >1 MPa where .sub.tensile stress location is the stress present in the first substrate and .sub.interface laser weld is the stress present at the interface. This method may be used to manufacture a variety of different sealed packages.

A method of forming a sealed device comprising providing a first substrate having a first surface, providing a second substrate adjacent the first substrate, and forming a weld between an interface of the first substrate and the adjacent second substrate, wherein the weld is characterized by ((.sub.tensile stress location)/(.sub.interface laser weld))<<1 or <1 and .sub.interface laser weld>10 MPa or >1 MPa where .sub.tensile stress location is the stress present in the first substrate and .sub.interface laser weld is the stress present at the interface. This method may be used to manufacture a variety of different sealed packages.

Provided is a sulfide solid electrolyte containing lithium, phosphorus, sulfur and chlorine, in which a molar ratio of the chlorine to the phosphorus, c (Cl/P), is greater than 1.0 and 1.9 or less, the sulfide solid electrolyte includes an argyrodite-type crystal structure, and a lattice constant of the argyrodite-type crystal structure is 9.820 or less.