A method of making a copper-doped glass comprising placing a target glass in a container, placing a target glass in a container, surrounding the target glass with a powder mixture comprised of fused silica (SiO.sub.2) powder and copper sulfide (Cu.sub.2S) powder, such that both the target glass and the surrounding powder are contained in the container, and heating the container and the target glass and the surrounding powder mixture to a temperature of between 800 C. and 1150 C.

An antimicrobial article that includes: an antimicrobial composite region that includes a matrix comprising a polymeric material, and a first plurality of particles within the matrix. The particles include a phase-separable glass with a copper-containing antimicrobial agent. The antimicrobial composite region can be a film containing the first plurality of particles that is subsequently laminated to a bulk element. The first plurality of particles can also be pressed into the film or a bulk element to define an antimicrobial composite region. An exposed surface portion of the antimicrobial composite region can exhibit at least a log 2 reduction in a concentration of at least one of Staphylococcus aureus, Enterobacter aerogenes, and Pseudomonas aeruginosa bacteria under a Modified EPA Copper Test Protocol.

A photochromic glass that includes a base glass and a photochromic agent is described. The base glass is a modified boroaluminosilicate glass and the photochromic agent is a nanocrystalline cuprous halide phase. The photochromic glass exhibits a sharp cutoff in the UV or short wavelength visible portion of the spectrum along with an absorption band at longer wavelengths in the visible. The nanocrystalline cuprous halide phase includes Cu.sup.2+, which provides states within the bandgap of the cuprous halide that permit the glass to absorb visible light. Absorption of visible light drives a photochromic transition without compromising the sharp cutoff. The nanocrystalline cuprous halide phase may optionally include Ag.

The present disclosure provides a wavelength conversion glass, a method for manufacturing the wavelength conversion glass, and a light emitting device including the wavelength conversion glass. The wavelength conversion glass includes a TeO.sub.2B.sub.2O.sub.3ZnOBaO-based transparent glass containing tellurium dioxide (TeO.sub.2), boric oxide (B.sub.2O.sub.3), zinc oxide (ZnO), and barium oxide (BaO); and phosphor micro-particles dispersed in the transparent glass.

A photochromic glass that includes a base glass and a photochromic agent is described. The base glass is a modified boroaluminosilicate glass and the photochromic agent is a nanocrystalline cuprous halide phase. The photochromic glass exhibits a sharp cutoff in the UV or short wavelength visible portion of the spectrum along with an absorption band at longer wavelengths in the visible. The nanocrystalline cuprous halide phase includes Cu.sup.2+, which provides states within the bandgap of the cuprous halide that permit the glass to absorb visible light. Absorption of visible light drives a photochromic transition without compromising the sharp cutoff. The nanocrystalline cuprous halide phase may optionally include Ag.

A copper dopant delivery powder comprising a fused silica powder and a Cu.sub.2S powder. A method of making the copper dopant delivery powder. A method of making a copper-doped glass comprising placing a target glass in a container, packing a composite SiO.CuS dopant powder around the target glass and heating the container and SiO.CuS dopant powder to a temperature of between 800 C. and 1150 C. A copper-doped glass comprising a glass comprising copper-doping wherein the copper-doped glass was formed by covering the glass with a fused silica powder and a Cu.sub.2S powder, wherein the fused silica powder and the Cu.sub.2S powder are mixed in varying ratios of Cu.sub.2S to silica represented by the formula (SiO.sub.2).sub.(1-x)(Cu.sub.2S).sub.x and heating to a temperature of between 800 C. and 1150 C.

A multilayer body that includes a multilayer structure having a surface layer portion and an inner layer portion. Each of the surface layer portion and the inner layer portion contains glass and quartz. The glass contained in each of the surface layer portion and the inner layer portion contains SiO.sub.2, B.sub.2O.sub.3, and M.sub.2O, where M is an alkali metal, and the quartz content in the surface layer portion is less than the quartz content in the inner layer portion.

A method of making an antimicrobial composite article, including the steps: providing a matrix comprising a polymeric material; providing a plurality of second phase particles comprising an antimicrobial agent; melting the matrix to form a matrix melt; distributing the plurality of second phase particles in the matrix melt at a second phase volume fraction to form a composite melt; forming a composite article from the composite melt; and treating the composite article to form an antimicrobial composite article having an exterior surface comprising an exposed portion of the matrix and the plurality of second phase particles. The distributing step can employ an extrusion process. The forming a composite article step can employ an injection molding process. The treating step can employ abrading and plasma-treating the article to define the exterior surface.

Provided are a method for manufacturing a wavelength conversion member that can suppress the reaction between inorganic nanophosphor particles and glass to suppress the deterioration of the inorganic nanophosphor particles, and the wavelength conversion member. The method for manufacturing a wavelength conversion member according to the present invention includes the steps of: forming inorganic protective films 5 on surfaces of inorganic nanophosphor particles 1; and mixing the inorganic nanophosphor particles 1 having the inorganic protective films 5 formed thereon with glass powder and firing a resultant mixture in a temperature range where the inorganic protective films 5 survive.

A dental material comprising a pigment, wherein the pigment contains Al, Cr and one or more of Y, La and lanthanides. The dental material allows mimicking the red coloration of natural teeth and natural oral mucosa. Also provided is the use of the dental material and the pigment and starting compositions for making the pigment in the preparation of a dental restoration. Furthermore, a process for preparing a dental restoration and a process for preparing the pigment is provided.