578 results about "Glass matrix" patented technology

Process for preparing glass-ceramic body including the steps of providing a basic glass body and subjecting the basic glass body to a thermal treatment whereby a crystalline phase embedded in a glass matrix is formed. The basic glass body is made of a composition comprising 65 to 72 wt-% SiO₂, at least 10.1 wt-% Li₂O and at least 10.1 wt-% Al₂O₃ based on the total weight of the composition, the proportion of Li₂O to Al₂O₃ being from 1:1 to 1.5:1. The thermal treatment involves a nucleation step followed by several crystallization steps at different temperatures, whereby at least two different crystalline phases are formed.

The present invention provides a method of forming inorganic pigments using one or more metal alloys. Metal alloys used in the method of the invention are preferably milled to a mean particle size of less than about 10 microns, may be mixed with other metal oxides, and calcined in the presence of oxygen in a rotary kiln. Inorganic pigments formed in accordance with the method of the invention can be used in a wide variety of applications, including the coloration of glass matrixes, ceramic bodies, polymers, and paints.

The present invention provides nanoparticles having a core/shell structure consisting of a core comprising a Group III element and a Group V element at a molar ratio of the Group III element to the Group V element in the range of 1.25 to 3.0, and a shell comprising a Group II element and a Group VI element and having a thickness of 0.2 nm to 4 nm, the nanoparticles having a photoluminescence efficiency of 10% or more and a diameter of 2.5 to 10 nm; a method of producing the water-dispersible nanoparticles comprising bringing a dispersion of III-V semiconductor nanoparticles in an organic solvent into contact with an aqueous solution of a Group II element-containing compound and a Group VI element-containing compound to thereby transfer the III-V semiconductor nanoparticles of the organic solvent dispersion to the aqueous solution, and then irradiating the aqueous solution with light; and a method of producing a glass matrix having the nanoparticles dispersed therein.

The present invention provides III-V semiconductor nanoparticles having a high photoluminescence efficiency in an aqueous solution, and a method of producing the nanoparticles. The invention further provides a fluorescent material with high PL efficiency containing the III-V semiconductor nanoparticles retained in a glass matrix, a method of producing the fluorescent material, and a light-emitting device containing the fluorescent material.

To provide a glass plate which has a low B₂O₃ content and which can be used as a glass plate for e.g. an LCD panel.

A glass plate which comprises, as a glass matrix composition as represented by mass % based on oxide, from 53 to 74 mass % of SiO₂, from 15 to 23 mass % of Al₂O₃, from 0 to 3 mass % of B₂O₃, from 2 to 17 mass % of MgO, from 0 to 12 mass % of CaO, from 0 to 6 mass % of SrO, from 6 to 28 mass % of MgO+CaO+SrO, from 0 to 9 mass % of Na₂O, from 0 to 6 mass % of K₂O and from 0.8 to 11 mass % of Na₂O+K₂O, contains from 100 to 500 ppm of SO₃, has an average coefficient of thermal expansion from 50 to 350° C. of at most 60×10⁻⁷/° C., and has a strain point of at least 600° C.

The invention relates to a material for conductor tracks made of copper alloy containing Cu > 90 At. %, whereby said material contains 0.5 to 10 At. % of one or more elements from the group consisting of Ca, Sr, Ba, Sc, Y, lanthanide, Cr, Ti, Zr, Hf, Si; and 0 to 5 At. % of one or more elements from the group consisting of Mg, V, Nb, Ta, Mo, W, Ag, Au, Fe, B. Said material has a low electrical resistance, good adhesion to the glass substrate, excellent oxidation resistance, and a low electromigration rate.

The invention discloses an Yb-doped fiber and a manufacturing method thereof. The Yb-doped fiber comprises a core layer at least containing Yb and Al, a glass matrix cladding surrounding the core layer, and a low-refractive index coating layer surrounding the glass matrix cladding. The glass matrix cladding comprises an inner cladding and an outer cladding. The refractive index of the inner cladding is lower than that of the core layer, and higher than that of the outer cladding. The inner cladding uses Ge, P, Al, and F as doping agents. The core layer is doped with F and P as doping agents. A MCVD method is used to manufacture a performing bar, fiber-drawing temperature is controlled, so optical fibers are drawn under relatively low tension, and required fibers are obtained. Through improving the refractive index of the inner cladding, relatively through reducing the difference between the refractive index of the core layer and the refractive index of the inner cladding, relatively high Al and Yb doping concentration in a fiber core is maintained, so as to reduce core layer NA under the condition that relatively high fiber cladding absorption coefficient is maintained, and single-mode output is realized, that is, fiber quality factor is proximity to one. The manufacturing method can manufacture a high-concentration Yb-doped fiber, and realizes relatively high cladding absorption coefficient.

Systems and methods in accordance with embodiments of the invention implement bulk metallic glass matrix composites in the fabrication of objects. In one embodiment, a method of fabricating an object including a bulk metallic glass matrix composite includes: forming a bulk metallic glass matrix composite composition into the shape of the object to be fabricated; and developing the bulk metallic glass matrix composite composition to include non-equilibrium inclusions that are softer than the surrounding matrix as measured by one of: the shear modulus, the elastic limit, and the hardness; where the bulk metallic glass matrix composite composition is such that the extent of the presence of the inclusions can be made to vary.

The present invention provides a method of drawing a thermoelectrically active material in a glass cladding, comprising sealing off one end of a glass tube such that the tube has an open end and a closed end, introducing the thermoelectrically active material inside the glass tube and evacuating the tube by attaching the open end to a vacuum pump, heating a portion of the glass tube such that the glass partially melts and collapses under the vacuum such that the partially melted glass tube provides an ampoule containing the thermoelectric material to be used in a first drawing operation, introducing the ampoule containing the thermoelectric material into a heating device, increasing the temperature within the heating device such that the glass tube melts just enough for it to be drawn and drawing fibers of glass clad thermoelectrically active material. The invention further provides a method for bunching together such fibers and re-drawing them one or more times to produce arrays of thermoelectric nanowires clad in glass.

The invention discloses a rare earth ion doped down-conversion luminescence transparent microcrystalline glass, which is obtained by doping rare earth ion in an oxyfluoride microcrystalline glass substrate with the molar concentration of the rare earth ion to be 1-40% and the volume percent of the fluoride microcrystal in the glass matrix to be 1-50%. The down-conversion luminescence transparent microcrystalline glass of the invention has the advantages of low phonon energy of the fluoride, excellent machining characteristic and chemical stability of the oxide glass and quantum efficiency which is more than one; the glass slowly ages under the condition of outdoor long-term illumination and can also be machined into transparent plate shape or even ultrathin plate shape, therefore, the glass is one of the best selections which can be used in solar cells, and has wide application prospect.

The invention provides methods for producing foamed glass and the compositions obtained thereby. The compositions are suitable for stable storage of a wide variety of substances, particularly biological and pharmaceutical.

The invention relates to a biological glass base porous composite material of a degradable mechanical enhanced type and a preparation method thereof. The material takes a biological glass porous stent which comprises macroporous channels and mediated pore channels as matrix. Adjacent macroporous channels are mutually communicated. The internal and external surfaces of the macroporous channels and mediated pore channels are provided with gel layers which are assembled layer-to-layer by the biomolecules with positive and negative charges alternatively. The biological glass matrix is made from the components with the following weight percentage of 16-38 percent of CaO, 0-10 percent of P2O5, 45-80 percent of SiO2, 0-0.1 percent of SrO and 0-22.5 percent of Na2O. The releasing speed of the biological active ions of the biological glass base porous composite material which is similar to the extracellular matrix and is decorated by the layer-to-layer assembly of the charges of different polarity of the biomolecules can be effectively cut and controlled. The walls of the pore channels are beneficial to the adhesion growth of cells. The mechanical strength, the fracture toughness and the machinability are good. And the application of the regeneration treatment on the bone gear injury home position of a stress concentrated part can be satisfied.

The present invention provides an anti-corrosion composition which can be applied to various substrates. The composition comprises a glass matrix formed by crosslinking a mixture of an amine-functionalized silane and an alkoxy-functionalized siloxane, an epoxy and a compatabilizing agent for coupling the epoxy and the alkoxy-functionalized siloxane of the glass matrix.

The invention relates to glass for manufacturing micro-channel plate glass matrix. The glass comprises surface glass and core glass which are used together. The surface glass comprises the following components in part by weight: 47 to 50.0 parts of SiO2, 0.5 to 2.0 parts of Al2O3, 28 to 30.0 parts of PbO, 7.0 to 10.0 parts of Bi2O3, 5 to 6.5 parts of sigma (K2O+Rb2O+CS2O), 6 to 9.0 parts of sigma (BaO+CaO) and 0.5 to 1.0 part of sigma (As2O3+Sb2O3). The core glass comprises the following components in part by weight: 20 to 27.0 parts of SiO2, 12 to 18.0 parts of B2O3, 1 to 2.0 parts of Al2O3, 30 to 40 parts of sigma (BaO+CaO), 10 to 20 parts of La2O3, and 2 to 3 parts of sigma (ZnO+MgO). The glass has the advantages of deformation resistance of MCP, structural uniformity and good aperture precision.

The invention discloses a large-mode-field ytterbium-doped optical fiber. The optical fiber is provided with a core layer containing ytterbium at least, a glass substrate internal wrapping layer which surrounds the core layer, and a low-refractive-index coating layer which surrounds the glass substrate wrapping layer. Ytterbium concentration of the center of the optical fiber along any diameter direction of the core layer is the highest, and ytterbium concentration gradually reduces from the center to the two end points. Distribution of ytterbium concentration of the core layer along the diameter direction of the core layer meets Gaussian distribution. The optimized optical fiber output light beam quality is acquired by the design without reducing core layer doping concentration or changing bending property or increasing optical fiber preparation difficulty.

The invention provides CsPbX3 nanocrystalline doped borogermanate glass, and a preparation method and an application thereof. The CsPbX3 nanocrystalline doped borogermanate glass is composed of the following components in mole percentages: 13.5 to 18.5% of Ge, 6.5 to 15.5% of B, 0 to 5.3 % of Zn, 0 to 2.5% of M, 0.3 to 2.3% of Pb, 1.3 to 4.6% of Cs, 2 to 7.9% of N, 1.6 to 6. 5% of X and 53 to 59%of O, wherein M is any one or a mixture of two or more selected from the group consisting of Ca, Sr or Ba; N is any one or a mixture of two or more selected from the group consisting of Li, Na or K; and X is any one or a mixture of two or more selected from the group consisting of Cl, Br or I. The CsPbX3 nanocrystalline doped borogermanate glass provided by the invention has the advantages of simple process, easy operation, controllable nanocrystalline sizes, and capability of obtaining luminescence in a certain range of visible light wave bands; meanwhile, a glass substrate provides a stablesubstrate environment for nanocrystalline, so thermal stability and chemical stability of the nanocrystalline are significantly improved; and the CsPbX3 nanocrystalline doped borogermanate glass has broad application prospects.

The invention discloses novel fluorescent glass and a preparation method thereof. The fluorescent glass is synthesized from a glass matrix prepared from 30%-50% of P2O5, 15%-30% of ZnO, 15%-25% of MgO, 5%-13% of Na2O and 0.5%-2% Li2O according to molar percentage, and a Ce-YAG fluorescent powder material accounting for 1%-50% of the total weight of the glass matrix. A fluorescent glass sheet is taken as an encapsulation material of a white light-emitting diode (LED), the shape and the thickness of the fluorescent glass sheet can be effectively controlled, and the uneven coating of the fluorescent powder is well avoided, so that the luminous efficiency, the service life and the spectrum stability of the white LED are improved. Furthermore, the novel fluorescent glass has the advantages that the preparation process is simple, the processing and shaping are easy, the raw materials are cheap, and the large-scale industrial production can be realized.

An up-conversion fluorescent material disclosed by the invention contains rare earth ion and second-order nonlinear optical microlite with the scale of nanometer or micron in glass matrix, wherein, the molar concentration of the rare earth ion is 0.001-5 percent in the glass matrix, and the volume percent of the second-order nonlinear optical microlite is 0.1-50 percent in the glass matrix. The rare earth ion can absorb Lambada/2 wavelength but not Lambada wavelength. A microcrystalline glass sample is focused by the laser of Lambada wavelength to produce ray rare earth ion of Lambada/2 wavelength and produce visible light emitting through reabsorption. As the conversion efficiency of frequency multiplication is a plurality of orders of magnitude higher than multiphoton absorption up-conversion efficiency, the up-conversion efficiency is obviously increased. The up-conversion fluorescent material has broad application prospect in the fields of biomarkers and three-dimensional display, etc.

Plant laser lighting fluorescent glass-ceramics is composed of 5-30wt% of red fluorescent powder and the balance of a glass matrix; the red fluorescent powder emits 660nm wide spectrum deep red light under excitation of a blue laser light source, the full width at half maximum is wider than 60nm; and red fluorescent powder crystalline grains are uniformly embedded in the glass matrix. The advantages of the plant laser lighting fluorescent glass-ceramics are that: the fluorescent glass-ceramics emits high brightness 660nm wide spectrum red light under excitation of a blue semiconductor laser, partly-transmitted-out blue laser and the red light emitted by the fluorescent glass-ceramics are matched with effective spectrum of plant photosynthesis, at the same time, the plant laser lighting fluorescent glass-ceramics can obtain a high brightness plant laser lighting source under excitation of high energy density laser, and has potential application in the fields such as a plant factory, vertical planting, a greenhouse, a glass cultivation room, and the like.

The disclosure relates to a solid glass matrix of polysaccharides, monossaccharides or disaccharides in combination with polyols as delivery vehicles for preservation and post gastric administration of a probiotic. The delivery vehicle is capable of releasing the probiotic at their site of action. The present invention further includes methods of making and using the solid glass matrix delivery vehicle of the invention.