373 results about "Phosphate glass" patented technology

Holey optical fibers (e.g. photonic fibers, random-hole fibers) are fabricated with quantum dots disposed in the holes. The quantum dots can provide light amplification and sensing functions, for example. When used for sensing, the dots will experience altered optical properties (e.g. altered fluorescence or absorption wavelength) in response to certain chemicals, biological elements, radiation, high energy particles, electrical or magnetic fields, or thermal/mechanical deformations. Since the dots are disposed in the holes, the dots interact with the evanescent field of core-confined light. Quantum dots can be damaged by high heat, and so typically cannot be embedded within conventional silica optical fibers. In the present invention, dots can be carried into the holes by a solvent at room temperature. The present invention also includes solid glass fibers made of low melting point materials (e.g. phosphate glass, lead oxide glass) with embedded quantum dots.

Traditional incandescent and halogen lamps produce a high CRI warm white light with indirect emission patterns at the cost of poor energy efficiency. This new advancement in solid-state lighting enables the production of a new solid-state filament wherein the tungsten filament is replaced with an array of high efficiency LED emitters which combine through an equiangular spiral, or t-spline/TNURCC lightpipe network to produce a single homogeneous blue light source which then pumps a luminescent filament comprised of a phosphor loaded silicone, phosphor loaded polymer, a lanthanide doped fluoro-phosphate glass, glass ceramic tape, quantum dot filled composite, or super-continuum spectrum producing photonic crystalline structure.

Disclosed are zinc niobium phosphate glasses consisting essentially, expressed in terms of mole percent on the oxide basis of, 40-65% P2O5, 25-37% ZnO, 0.1-15% Nb2O5, 0-6% Al2O3, 0-5% Bi2O3, 0-3% Na2O and 0-5% B2O3, said glass exhibiting glass transition temperature below 450° C., a dilatometer softening point below 500° C., coefficient of expansion in the range of 80-120×10⁻⁷° C.⁻¹, good chemical durability and blue color. The glass of the present invention is useful for sealing optical fiber to ferrule by local heating.

The present invention relates to resorbable glass scaffolds for use in biological applications and methods for making same. Specifically, these scaffolds are composed of phosphate glass fibers, where the rate of dissolution into biological fluids is controlled by the length of time the glass is held above its melt temperature prior to spinning the fiber.

The invention provides an antimicrobial phosphate glass composition including, in weight percent based on oxide: greater than 45 to 90 of P₂O₅, 0 to 60 of B₂O₃, 0 to 40 of SiO₂, 0 to 20 weight percent of Al₂O₃, 0 to 30 of SO₃, 0 to 0.1 of Li₂O, 0 to 0.1 of Na₂O, 0 to 0.1 of K₂O, 0 to 40 of CaO, 0 to 40 of MgO, 0 to 15 of SrO, 0 to 40 of BaO, 0 to 40 of ZnO, 0 to 5 of Ag₂O, 0 to 15 of CuO, 0 to 10 of Cr₂O₃, 0 to 10 of I—, 0 to 10 of TeO₂, 0 to 10 of GeO₂, 0 to 10 of TiO₂, 0 to 10 of ZrO₂, 0 to 10 of La₂O₃, 0 to 5 of Nb₂O₃, 0 to 5 of CeO₂, 0 to 5 of Fe₂O₃, 0 to 5 of WO₃, 0 to 5 of Bi₂O₃, and 0 to 5 of MoO₃.

There are provided a near-infrared cut filter that effectively uses near-infrared absorbing glass and a near-infrared absorbing dye and is excellent in a near-infrared shielding property, and a high-sensitivity solid-state imaging device including the same. A near-infrared cut filter includes: a near-infrared absorbing glass substrate made of CuO-containing fluorophosphate glass or CuO-containing phosphate glass; and a near-infrared absorbing layer containing a near-infrared absorbing dye (A) and a transparent resin (B), on at least one principal surface of the near-infrared absorbing glass substrate, wherein an average value of a transmittance in a 400 nm to 550 nm wavelength range is 80% or more, and an average value of a transmittance in a 650 nm to 720 nm wavelength range is 15% or less.

A precision press-molding preform for producing an optical element for use in an imaging device using a CCD type or MOS type solid image-sensing device, which is formed of a glass composition containing, by mol %, 25 to 45% of P₂05, 0.5 to 10% of CuO, 0 to 10% of B₂0₃, 0 to 10% of Al₂0₃, 2 to 30% of Li₂O, 0 to 25% of Na₂O, 0 to 15% of K₂O, the total content of Li₂O, Na₂O and K₂O being 3 to 40%, 3 to 45% of BaO, 0 to 30% of ZnO, 0 to 20% of MgO, 0 to 20% of CaO, 0 to 20% of SrO, 0 to 10% of Bi₂O₃, 0 to 5% of La₂O₃, 0 to 5% of Gd₂O₃ and 0 to 5% of Y₂O₃, the total content of these components being at least 98%, and a precision press-molding preform, which is formed of a phosphate glass containing CuO, an alkali metal oxide, BaO and ZnO and having a BaO content/ZnO content molar ratio (BaO/ZnO) of greater than 1.

The invention discloses a single longitudinal-mode optical fiber laser with low noise, narrow linewidth and high power. Polarization maintaining optical fiber is rare-earth-doped phosphate single-mode glass optical fiber, the component of a fiber core is phosphate glass which consists of 70P2O5-8Al2O3-15BaO-4La2O3-3Nd2O3, the fiber core of the polarization maintaining optical fiber is doped with high-concentration luminous ions, the luminous ions are one or combination of more than one of lanthanide ions and transition metal ions, the doping density of the luminous ions is greater than 1*10<19>ions/cm<3> and the luminous ions are evenly doped in the fiber core. A polarization maintaining fiber Bragg grating with the narrow linewidth and a dichroscope form a front cavity mirror and a rear cavity mirror of the optical fiber laser, a centimeter-sized erbium-ytterbium co-doped phosphate glass polarization maintaining optical fiber is taken as a laser working substance, and polarization maintaining output laser generated by a single-mode semiconductor laser is taken as a pumping source, thus achieving the single longitudinal-mode laser output by designing and manufacturing the reflection spectrum width of the polarization maintaining fiber Bragg grating and controlling the cavity length of the whole laser cavity.

A sealing glass of a low melting point glass composition which is a phosphate glass that contains transition metal wherein the glass contains 15 to 35% of BaO and Sb₂O₃ (in total) and the ratio by weight of BaO to Sb₂O₃ or Sb₂O₃ to BaO is 0.3 or less. Particularly the transition metal is vanadium and the glass contains V₂O₅ of 45 to 60 wt % as vanadium oxide and P₂O₅ of 15 to 30 wt % as phosphorus oxide.

The bonding material is a mixture of a filler and a vanadate-phosphate glass that contains V₂O₅ as the main ingredient and the glass contains V₂O₅ of 45 to 60%, P₂O₅ of 20 to 30%, BaO of 5 to 15%, TeO₂ of 0 to 10%, Sb₂O₃ of 5 to 10%, and WO₃ of 0 to 5%. The particle size of the filler is in the range of 1 to 150 μm and the ratio of filler is 80% by volume or less of the adhesive glass.

A high-gain phosphate glass composition, which can be used to produce ultra-short gain length lasers and optical amplifiers is described wherein the composition of the glass in addition to exhibiting high gain for lasers and amplifiers, also exhibits high thermal shock resistance, high cross section, insignificant concentration quenching, and high solubility for rare earth ions and other properties which enable the material to be fabricated into a new class of ultra-short length micro-laser, fiber laser and amplifier configurations and designs.

The disclosed invention relates to a method and a composition for treating a porous carbon-carbon composite with an oxidation inhibiting composition. The oxidation inhibiting composition comprises at least one phosphate glass. In one embodiment, the method optionally further comprises pretreating the composite with a pretreating composition prior to application of the oxidation inhibiting composition. Carbon-carbon composites treated by the foregoing method are disclosed.

A planar waveguide with a glass core and a crystalline cladding. In a specific embodiment, the core is doped preferably with Neodymium, Ytterbium, or Erbium. In the best mode, the core is athermal glass with a refractive index uniformity 10⁻⁶ or better and the crystalline cladding has a refractive index lower than that of the core by 10⁻⁴ to 10⁻³ with a refractive index uniformity of 10⁻⁴. The cladding has high transparency at pump and lasing wavelengths. The coefficient of thermal expansion of the cladding is close to that of the core. In illustrative embodiments, the cladding is Sapphire and the core is aluminate glass. In an alternative embodiment, the cladding is crystal quartz and the core—is phosphate glass. By utilizing different materials for the core and cladding, the properties of each are optimized. Use of glass for the core allows much more flexibility in tailoring the properties of the core and the PWG geometry readily accommodates the low thermal conductivity of a glass core because the overall thermal performance is dominated by the higher thermal conductivity of the crystalline cladding.

The invention discloses a ceramized polyolefin material and a preparation method thereof, belonging to the field of electric wire and cable materials. The ceramized polyolefin material comprises the following raw material components: 100 parts of an ethylene-alpha-olefin copolymer, 100-200 parts of ceramized powder A, 20-100 parts of ceramized powder B, 100-200 parts of ceramized powder C, 5-40 parts of a lubricating agent and 0.1-1 part of an antioxidant, wherein the ethylene-alpha-olefin copolymer is one or more selected from an ethylene and alpha-propylene copolymer, an ethylene and alpha-butylene copolymer, an ethylene and alpha-hexylene copolymer and an ethylene and alpha-octene copolymer; the ceramized powder A is one or a combination of more than one selected from layered inorganic powder, fibrous inorganic powder and needle-like inorganic powder; the ceramized powder B is at least one selected from borax, ammonium borate, a zinc borate and boron frit, phosphate glass powder with a low melting point, borate glass powder with a low melting point and silicate glass powder with a low melting point; the ceramized powder C is granular powder with excellent high-temperature insulativity; and the antioxidant is at least one selected from 1010, 1076, 168, 626, 300 and DSTDP.

A fluorophosphate glass having a fluorine content of 25% or more by anionic %, which is produced from a glass raw material containing 0.1 to 0.5%, by anionic %, of a halide containing a halogen element selected from chlorine, bromine or iodine, and a phosphate glass having a fluorine content of less than 25% by anionic %, which is produced from a glass raw material containing 0.1 to 5% by anionic %, of a halide containing a halogen element selected from chlorine, bromine or iodine.

To obtain a glass composition for sealing that not only improves the water resistance of tin phosphate glass but also attains appropriate sealing in low-oxygen atmosphere, especially vacuum atmosphere, and that further allows sealing at low temperature such as 490 DEG C or below, excelling in thermal stability, and obtain a relevant sealed material. There is provided a glass composition for sealing characterized by having a glass composition containing, by molar percentage in terms of oxide, 30 to 80% SnO, 10 to 25% (not including 25%) P2O5, 0 to 20% B2O3, 0 to 20% ZnO, 0 to 10% SiO2, 0 to 10% Al2O3, 0 to 20% WO3 and 0 to 20% R2O (R represents at least one of Li, Na, K and Cs) and characterized by being employed in sealing in low-oxygen atmosphere, especially vacuum atmosphere.

A phosphate glass doped with copper in an amount of less than 2% by weight is formed to produce a lens for use on external aircraft lights. The glass attenuates infra red radiation to a degree where it does not pose a danger of temporarily blinding a pilot wearing night vision goggles yet remains visible. The glass has little appreciable effect on light transmission in the visible spectrum. Conveniently, the glass can be formed by slumping at a softening temperature against a mold to produce intricate lens shapes. In addition, the glass is able to withstand conventional toughening processes.

A substantially alkaline resistant calcium-iron-phosphate (CFP) glass and methods of making and using thereof. In one application, the CFP glass is drawn into a fiber and dispersed in cement to produce glass fiber reinforced concrete (GFRC) articles having the high compressive strength of concrete with the high impact, flexural and tensile strength associated with glass fibers.

The invention discloses a ceramized polyolefin material and a preparation method thereof, belonging to the field of electric wire and cable materials. The ceramized polyolefin material comprises the following raw material components: 100 parts of an ethylene-alpha-olefin copolymer, 150-300 parts of ceramized powder A, 20-100 parts of ceramized powder B, 5-40 parts of a lubricating agent and 0.1-1 part of an antioxidant, wherein the ethylene-alpha-olefin copolymer is one or more selected from an ethylene and alpha-propylene copolymer, an ethylene and alpha-butylene copolymer, an ethylene and alpha-hexylene copolymer and an ethylene and alpha-octene copolymer; the ceramized powder A is one or a combination of more than one selected from layered inorganic powder, fibrous inorganic powder and needle-like inorganic powder; the ceramized powder B is at least one selected from borax, ammonium borate, a zinc borate and boron frit, phosphate glass powder with a low melting point, borate glass powder with a low melting point and silicate glass powder with a low melting point; and the antioxidant is at least one selected from 1010, 1076, 168, 626, 300 and DSTDP. The ceramized polyolefin material is reasonable in raw material and proportion, capable of ensuring normal operation of a route, good in flexibility, simple in process and low in cost.

The invention provides an anti-infection biological ceramic artificial bone and application thereof. The artificial bone is prepared by the following method that biological ceramics, bioglass sintering auxiliary agents and bonding agents are mixed; the obtained mixture is formed to obtain a composite blank body; the bioglass sintering auxiliary agents are selected from silicate glass and/or phosphate glass; antibacterial ions and bone vascularization promotion ions are mixed in the bioglass sintering auxiliary agents; the antibacterial ions are selected from one or several kinds of materials from silver, gallium, copper and zinc; the bone vascularization promotion ions are selected from one or several kinds of materials from magnesium, strontium, iron, boron, cobalt and lithium; the total amount of substances of oxides of the antibacterial ions and oxides of the bone vascularization promotion ions accounts for 0.1 to 60 percent of the amount of substance of the bioglass sintering auxiliary agents; the mol ratio of the antibacterial ions to the bone vascularization promotion ions is (0.05 to 20):1; the composite blank body is sintered to obtain the biological ceramic artificial bone. The anti-infection biological ceramic artificial bone has the advantages of high intensity and low cell toxicity; the antibacterial ion release speed is controllable; the release time is long.