Abstract: Provided are a scintillator panel and a radiation detector which give a radiation image reduced in sensitivity unevenness and sharpness unevenness. Also provided are processes for producing the scintillator and the detector. The scintillator panel comprises a support and, deposited thereon, a phosphor layer comprising columnar crystals of a phosphor which have been formed by the vapor deposition method. The panel is characterized in that the columnar crystals of a phosphor comprise cesium iodide (CsI) as a base ingredient and thallium (Tl) as an activator ingredient and have, in a root part thereof, a layer containing no thallium, and that the coefficient of variation in thallium concentration in the plane of the phosphor layer is 40% or less.

Abstract: A method for producing a fiber membrane of nanofibers that have both smooth and porous surface features. The method includes materials processing using polymer mixes with solvents and melt polymers with additives. The method includes nanomaterial incorporation onto a fiber structure after formation of the fiber structure. The fiber structure can be a part of a nanoparticle carrier material, a nanoparticle disposal medium, a lighting medium, and a catalysis medium.

Abstract: Compositions comprising a phosphor and a compound having the formula R1R2M, wherein R1 is a substituted or unsubstituted alkyl, aryl, heteroaryl, arylalkyl, heteroarylalkyl, alkoxy, alkoxyl, acyl heterocycle, haloalkyl, oxaalkyl, or silyl; R2 is a sulfate, sulfonate, or carboxylate and M is an alkali metal or an alkaline earth metal are provided. Phosphors coated with the compound, methods of making the coated phosphors and articles comprising the compositions are provided.

Abstract: Methods for fabricating nanoscale array structures suitable for surface enhanced Raman scattering, structures thus obtained, and methods to characterize the nanoscale array structures suitable for surface enhanced Raman scattering. Nanoscale array structures may comprise nanotrees, nanorecesses and tapered nanopillars.

Abstract: The invention is directed to a composition having a carrier matrix, and a particulate luminescent composition dispersed therein, the particulate luminescent composition comprising a rare-earth-doped solid-state solution of alkaline earth fluorides represented by the chemical formula REx(CaaSrbBac)1?xF2+x?2yOy wherein RE represents a three-valent rare-earth element, 0.005?x?0.20, and 0?y?0.2, a+b+c=1, with the proviso at least two of a, b, and c are not equal to zero; the particulate luminescent composition exhibiting a luminescence spectrum having a plurality of intensity peaks at characteristic wavelengths. It is further directed to a process by contacting a surface with the composition and articles made therefrom.

Abstract: A webbing formed of synthetic yarns having an indicator for indicating exposure to ultraviolet light which results in strength loss of said synthetic yarns. The strength loss indicator comprises a strip extending along at least a portion of the webbing. The strip includes a phosphorescent material that produces a glow when exposed to ultraviolet light. The phosphorescent material is adapted to lose its ability to produce a glow over time exposure to ultraviolet light. Advantageously, the ability to glow fades at a rate correlated to the rate of loss of tensile strength of said synthetic yarns due to ultraviolet light exposure to indicate the condition of the webbing.

Abstract: A luminescence concentrator (LK) may concentrate both incident direct and diffuse light by way of frequency shift and total internal reflection. It differs fundamentally from geometric concentrators. With sufficient geometric expansion of the collector plate, nearly arbitrarily high concentration can be achieved in the LK. A luminescence disperser is an apparatus which holds both directional and nondirectional incident light captive in a transparent body by way of frequency shift and total internal reflection and emits it diffusely or directionally uniformly distributed across an area by way of luminescence emission. The object of the invention is a method for the technical implementation of the LK and luminescence disperser, using zeolite crystals having a nanotube structure, into which the luminescent dyes are embedded such that they have antenna properties. Using the resulting novel structures, problems can be solved which made the technical use of LK impossible or at least considerably limited it.

Abstract: A method of manufacturing safety cones from recycled materials is disclosed. Recycled materials are disposed into a molding machine, which turns them into safety cone molds. A dye containing plastic powders, solvent, and colors is coated on the surface of the safety cone mold, rendering a colored safety cone. Therefore, the production cost can be reduced, and the color can stay longer.

Abstract: The present invention relates to an afterglow coating comprising a clear varnish and a photoluminescent pigment, wherein the pigment comprises a white luminous colour in which the clear varnish is distributed. The present invention furthermore relates to methods for producing these coatings and to their use for coating surfaces in the cabin of aircraft.

Abstract: The present invention relates to a method of producing silver films having large nanoparticles caused by cracking during anaerobic annealing to provide surfaces that exhibit increased metal enhanced fluorescence. Preferably the annealing process is conducted on a silver film having a thickness from about 14 to 17 nm for about an hour at a temperature of approximately 190° C. to about 210° C. resulting in the conversion of the just-continuous films into large particulate films, not readily assessable by other chemical deposition techniques.

Abstract: Disclosed are a radiation scintillator and a radiation image detector comprising the radiation scintillator. The radiation scintillator which exhibits enhanced sharpness and luminance and is excellent in shock resistance, comprises, on the substrate, a scintillator layer containing a phosphor and formed by a process of gas phase deposition, and the scintillator layer exhibits a thickness of 100 to 500 ?m, a filling factor of the phosphor of 75 to 90% by mass and a layer thickness distribution of not more than 20%.

Abstract: There is provided a scintillator plate which is superior in productivity, exhibits enhanced light extraction efficiency of a scintillator and enhanced sharpness and results in reduced deterioration in sharpness between flat light-receiving element surfaces. There are also provided a scintillator panel and a flat panel radiation detector by use thereof. The scintillator plate comprises a reflection layer, a resinous anticorrosion layer and a scintillator layer provided sequentially in this order on a heat-resistant resin substrate, wherein the scintillator plate is employed, as a component for a flat panel radiation detector, without being physicochemically adhered to the surface of a flat light-receiving element.

Abstract: Disclosed are a method for fabrication of a thin film phosphor, a thin film phosphor and a product using the same. The thin film phosphor is fabricated by adsorbing a raw material to a surface of a substrate simultaneously with diffusing the same or, otherwise, depositing the raw material on the substrate and heating the same, so as to diffuse the raw material from the surface of the substrate into the substrate wherein the substrate contains at least one selected from constitutional elements of the phosphor. The fabricated thin film phosphor has a constitutional composition continuously varied to gradually come close to a constitutional composition of the substrate when the constitutional elements of the phosphor are diffused from a surface to an inner side of the substrate.

Abstract: An object of the present invention is to reduce the incompleteness of the surface state due to lattice constant and steric hindrance, which was heretofore nearly unavoidable, in the surface treatment of light-emitting semiconductor nanoparticles. The present invention provides an excellent luminescent material that has enhanced photoluminescence efficiency, reduced photoluminescence spectrum width, and increased chemical resistance. Specifically, the present invention provides a luminescent material comprising semiconductor nanoparticles having a mean particle size of 2 to 12 nm and a band gap of 3.8 eV or less, each of the semiconductor nanoparticles being coated with a silicon-containing layer, the semiconductor nanoparticles in the luminescent material having a peak emission wavelength 20 nm or more towards the longer-wavelength side than the peak emission wavelength of the semiconductor nanoparticles alone.

Abstract: A light emitting element, includes: a luminescent material which is obtained from a plant-derived material as a raw material, and which contains therein a silicon oxide containing therein silicon having a content rate of 40 wt. % or more, and oxygen having a content rate of 40 wt. % or more as a principal component; a fluorescent substance adsorbed on a surface of the luminescent material; and an energy source for exciting the luminescent material and the fluorescent substance.

Abstract: Disclosed are a nanoparticle-doped porous bead with a highly enhanced photoluminescence without wavelength shift and improved durability, and a fabrication method thereof, the nanoparticle-doped porous bead comprising porous beads, and nanoparticles radially bonded onto homocentric spheres of the porous beads by an electrostatic attractive force, the homocentric sphere located inside the porous bead near a surface thereof, wherein the nanoparticles are photoluminescent nanoparticles or mixed nanoparticles of photoluminescent nanoparticles and another nanoparticles, wherein the another nanoparticle is one or more than two mixed, selected from a group consisting of magnetic nanoparticle, metallic nanoparticle and metal oxide nanoparticle.

Abstract: A phosphor film high in efficiency and less in luminescence irregularity and a method of producing the phosphor film are provided. The phosphor film includes a zinc sulfide compound containing an additive element(s). The additive element is at least one element selected from the group consisting of Ag, Cu and Au; the concentration of the additive element is 0.2 mol % or more and 5 mol % or less with respect to Zn; and the film thickness of the phosphor film is 10 nm or more and 2 um or less.

Abstract: Degradation of a fluorescent material used in an image display device provided with an electron emitting device that is caused by heating in the process of manufacturing the device is prevented. A coating layer 44b composed of SiO2 is formed on the surface of fluorescent material particles 44a, and any metal 49 from among Bi, Pb, Sn, and Sb is added to the coating layer 44b so that the metal concentration at the surface of the coating layer is equal to or greater than 0.05 ppm.

Abstract: A device for stimulable light emission that includes a fiber mat of nanofibers having an average fiber diameter in a range between 100 and 2000 nm, and includes plural stimulable particles disposed in association with the nanofibers. The stimulable particles produce secondary light emission upon receiving primary light at a wavelength ?. The average fiber diameter is comparable in size to the wavelength ? in order to provide scattering sites within the fiber mat for the primary light. Various methods for making suitable luminescent nanofiber mats include: electrospinning a polymer solution including or not including the stimulable particles and forming from the electrospun solution nanofibers having an average fiber diameter between 100 and 2000 nm. Methods, which electrospin without the stimulable particles, introduce the stimulable particles during electrospinning or after electrospinning to the fibers and therefore to the resultant fiber mat.

Abstract: A fluorescent fine particle film that retains the intrinsic functions of fluorescent fine particles and that can be formed on any substrate at a desired thickness, a method for manufacturing the fluorescent fine particle film, and a display apparatus, a photoconductor, and a sensor each including the fluorescent fine particle film are provided.

Abstract: The instant invention relates to storage stable solutions of optical brighteners based on certain salt forms of anilino-substituted bistriazinyl derivatives of 4,4?-diaminostilbene-2,2?-disulphonic acid which do not need extra solubilising additives.

Abstract: This invention belongs to the field of optical chemical sensors. Specifically, it relates to sensors based on the absorbance and emission of light by an indicator molecule where the optical properties of the indicator molecule change in response to a particular analyte. These indicator molecules are immobilized in a transparent substance that is exposed to light, where the substance is typically a solid such as a sol-gel or a polymer. More specifically, it is a new process for manufacturing a material (a medium or matrix) to hold or encapsulate sensing molecules. This new material has an improved resistance to exposure to hydrocarbons. These materials are used to immobilize colorimetric and/or fluorescence indicators in a matrix that repels hydrocarbons in general and non-polar hydrocarbons (i.e. aromatics hydrocarbons) in particular.

Abstract: An exemplary method for forming phosphor coating includes: providing a substrate; forming a first hydrophilic film on the substrate, the first film being soluble in water; forming a second lipophilic film on the first film, the second film comprised of a phosphor material; submerging the substrate having the first film and the second film formed thereon into water, so that the first film is dissolved in water and the second film is floated on surface of the water; and dipping a light source into the second film to forming a phosphor coating on the light source.

Abstract: [PROBLEMS] To provide a method for manufacturing a phosphorescent plate which generates phosphorescence having sufficient luminance and has improved phosphorescent properties, and to provide the phosphorescent plate. [MEANS FOR SOLVING PROBLEMS] A method for manufacturing a phosphorescent plate (100) includes a first-dot forming step of forming first dots by applying a first liquid mixture containing a glass frit, a phosphorescent material, and a resin to one surface of a substrate (10) in dot form; a sprinkling step of forming a first-dot layer (21) by sprinkling a phosphorescent material on surfaces of the first dots and drying the phosphorescent material; a coating step of coating a surface of the first-dot layer (21) with a second liquid mixture containing a glass frit, a phosphorescent material, and a resin and forming a coating layer (22); and a first firing step of forming a phosphorescent layer (20) by firing the first-dot layer and the coating layer (22).

Abstract: A manufacturing method for the cylindrical laminated body includes superimposing application step, a solvent removal step and an imidization step. In the superimposing application step, a coating material containing fluororesin particles and a polyimide precursor solution are applied in a superimposing manner on a core body. In the solvent removal step, the solvent is removed from the coating material and the polyimide precursor solution. In the imidization step, the polyimide precursor is imidized along with the formation of the coating material into a covering film.

Abstract: Microspheres, populations of microspheres, and methods for forming microspheres are provided. One microsphere configured to exhibit fluorescent and magnetic properties includes a core microsphere and a magnetic material coupled to a surface of the core microsphere. About 50% or less of the surface of the core microsphere is covered by the magnetic material. The microsphere also includes a polymer layer surrounding the magnetic material and the core microsphere. One population of microspheres configured to exhibit fluorescent and magnetic properties includes two or more subsets of microspheres. The two or more subsets of microspheres are configured to exhibit different fluorescent and/or magnetic properties. Individual microspheres in the two or more subsets are configured as described above.

Abstract: A radiographic image conversion panel containing a substrate having thereon a phosphor layer formed by a vapor-accumulating method, wherein the phosphor layer has a thickness distribution of not more than ±20%, the thickness distribution being defined by the formula: ((Dmax?Dmin)/(Dmax+Dmin))×100, provided that Dmax is a maximum thickness of the phosphor layer; and Dmin is a minimum thickness of the phosphor layer.

Abstract: A process for incorporating a long persistent phosphor into a fabric material which occurs by firing a phosphor within a crucible, then grinding the resulting aggregate into a phosphor particulate of specified size, encapsulating the phosphor particulate within a water impervious coating material and then applying a specified ratio by weight of the encapsulated phosphor particulates into the fabric material. Further, a fibrous product is described incorporating encapsulated long persistent phosphor particles.

Abstract: Luminescent materials and the use of such materials in anti-counterfeiting, inventory, photovoltaic, and other applications are described herein. In one embodiment, a method of forming a luminescent material includes: (1) providing a source of A and X, wherein A is selected from at least one of elements of Group IA, and X is selected from at least one of elements of Group VIIB; (2) providing a source of B, wherein B is selected from at least one of elements of Group IVB; (3) subjecting the source of A and X and the source of B to vacuum deposition to form a set of films adjacent to a substrate; and (4) heating the set of films to a temperature in the range of 120° C. to 350° C. to form a luminescent material adjacent to the substrate, wherein the luminescent material includes A, B, and X.

Abstract: Disclosed are a radiation image conversion panel, which provides high luminance, an image without white or black defects, an image free from cracks and an image with reduced unevenness, and its manufacturing method. Also disclosed is an X-ray radiographic system employing the radiation image conversion panel. The radiation image conversion panel of the invention comprises a substrate and provided thereon, a reflection layer, a phosphor layer and a protective layer in that order, wherein the phosphor layer is composed of a phosphor crystal in the form of column, and the reflection layer is formed by vapor phase deposition of two or more kinds of metals.

Abstract: The invention relates to anti-Stokes fluorescent material compositions which, upon excitation by IR radiation, emits IR radiation without significant quantities of visible blue light being emitted at the same time, and which are therefore suitable as invisible security marks.

Abstract: A method of identifying a source of a substance incorporating one or more luminescent markers comprises illuminating the substance to stimulate emission from at least one of the luminescent markers. A luminescent signature is generated from the detected luminescent emission. The source of the substance is identified based on a match between the generated luminescent signature and a pre-defined luminescent signature.

Abstract: The present invention provides a phosphor, a phosphor paste and a light emitting device. The phosphor comprises a compound represented by the formula (1): M13(1-x)Eu3xM2mM3nO3+m+2n (1) wherein M1 is at least one selected from the group consisting of Ba, Sr and Ca, M2 is at least one selected from the group consisting of Mg and Zn, M3 is at least one selected from the group consisting of Si and Ge, and m, n and x satisfy the following relations: 0.9?m?1.1; 1.8 ?n?2.2; and 0.00016 ?x?0.003. The phosphor paste comprises the phosphor, an optional organic binder and an optional solvent. The light emitting device comprises the phosphor, and an optional excitation source for the phosphor.

Abstract: Black and or, clear acrylic plastic provides a substrate so that particles of phosphorescent material appear as celestial images that glow in the dark. Ambient or ultra-violet light charges the phosphorescent particles providing a realistic depiction of stars, planets, and deep space objects. Three-dimensional representations of planet earth, earth continents, and multi-color planets are also produced with phosphorescent material.

Abstract: The invention is directed to a method by exposing at least a portion of a luminescent coating disposed on a surface of an article to ultraviolet light at one or more preselected wavelengths causing said luminescent coating to exhibit a luminescence spectrum, the luminescence spectrum exhibiting a plurality of intensity peaks that have been priorly determined to create a standard; determining the intensity of at least two peaks in the luminescence spectrum of the coating; determining a peak intensity ratio of the at least two peaks; comparing the peak intensity ratio determined with the standard; and, classifying the article according to whether or not the peak intensity ratio does or does not match the standard; wherein the luminescent coating comprises a particulate luminescent composition comprising a rare earth doped fluoride represented by the formula RExA1?xF2+x?2yOy wherein RE represents a three-valent rare-earth element, A is alkaline earth, 0.002?x?0.20, and 0?y?x.

Abstract: The invention relates to a feature substance for securing the authenticity of documents of value, having at least one luminescent substance in particle form and nanoparticles enveloping the surfaces of the luminescent substance particles at least partially, wherein the properties of the feature substance result from the interaction of the properties of the luminescent substance and of the nanoparticles. The invention furthermore relates to a method for producing the feature substance, a method for securing the authenticity of a security element or document of value using a feature substance, as well as security elements and documents of value with authenticity features on the basis of the feature substance.

Abstract: Multi-spectral UV illuminators which can be used in common identification document authentication scenarios have been developed. These illuminators allow the use of multiple UV inks that respond to illumination at differing spectral frequencies to be printed into patterns. Such patterns make possible the production of ID documents which are more secure and harder to counterfeit.

Abstract: A method of forming a plurality of multi-layer organic films in a single process includes preparing a first evaporating source that evaporates a first evaporating source material onto a first deposition region and a second evaporating source that evaporates a second evaporating source material onto a second deposition region, wherein the first evaporating source material and the second evaporating source material are different from each other, adjusting the first evaporating source and the second evaporating source in order to obtain a first overlapping region in which the first deposition region and the second deposition region overlap each other, driving the first evaporating source and the second evaporating source to deposit the first evaporating source material and the second evaporating source material onto a portion of an object to be processed, and moving the first evaporating source and the second evaporating source from a first end of the object to a second end of the object to form a multilayer fil

Abstract: Methods for producing a coated biaxially oriented film and films made therefrom. An illustrative method can include orienting a base film in a first direction to provide an uniaxially oriented film; coating at least a portion of the uniaxially oriented film with a polyolefin dispersion to produce a coated uniaxially oriented film; and orienting the coated uniaxially oriented film in a second direction at a temperature sufficient to stretch and anneal the coated film to provide a coated biaxially oriented film having greater than 80% gloss.

Abstract: A method of identifying an object comprising providing an vehicle having on a surface thereof at least one layer of paint, such as a urethane-based paint. A unique alphanumeric identification is applied to the paint layer with a fluorescent material at a selected unrevealed location thereon. The fluorescent material is permitted to migrate into the at least one paint layer, while an excess amount of fluorescent material remains on the at least one paint layer. Thereupon, the excess amount of fluorescent material is removed from the at least one paint layer with a solvent. The unique discrete identification created by fluorescent material migrated into the at least one paint layer is visible at an acute angle to the object surface without use of an ultraviolet light, while being substantially invisible at an angle normal to the object surface.

Abstract: An optical film of a display and a method for producing the same are provided. The display includes a light source and an optical film. The light source provides the first light. The optical film includes at least one coating layer. The coating layer has a first surface and a second surface opposite to the first surface. The coating layer is adapted to absorb the first light from the first surface to excite a second light to emit through the second surface. The intensity of the second light is larger than that of the first light.

Abstract: A method of producing a textile article having a localised finish is described. The method comprises providing a continuous supply of a textile substrate, providing an array of digital nozzles, supplying a finishing composition to the nozzles and selectively depositing the finishing composition from the nozzles in a series of droplets to deposit a first predetermined pattern of droplets on a selected area of the substrate to endow a functional characteristic on the selected areas. In this way, it is possible to ensure that only those areas receive the finishing composition that ultimately require it. Usage of valuable chemicals and process time can hereby be reduced.

Abstract: A method including depositing a powder on a substrate to form a first layer thereon, wherein the layer includes a Pt group metal, Si and reactive element selected from the group consisting of Hf, Y, La, Ce, Zr, and combinations thereof. Deposited on the first layer is a second layer including Al to form a coating with a ?-Ni+???Ni3Al phase constitution. In preferred embodiments, the second layer is deposited with an organo halocarbon activator.

Abstract: This invention relates to a halide-containing stimulable phosphor having improved moisture resistance and luminance, and a process for producing the same. The halide-containing stimulable phosphor is characterized in that, among elements constituting the outermost surface and inside of the phosphor, there is a difference in composition ratio of a halogen element between the outermost surface and the inside of the phosphor. A radiation image conversion panel, which has been improved, for example, in moisture resistance, luminance and image quality by using the phosphor, and a process for producing the same are also provided.

Abstract: Photoluminescent phosphor powders and a method for making phosphor powders. The phosphor powders have a small particle size, narrow particle size distribution and are substantially spherical. The method of the invention advantageously permits the economic production of such powders. The invention also relates to improved devices, such as display devices and lighting elements, incorporating the phosphor powders.

Abstract: Disclosed is methods for applying a radiation curable fluorescent varnish to a document and authenticating the document via the radiation curable fluorescent varnish. The ultraviolet radiation curable fluorescent varnish comprising at least one curable monomer or oligomer, at least one photoinitiator, and at least one fluorescent material, wherein upon exposure to activating radiation, the fluorescent material fluoresces to cause a visible change in the appearance of the ultraviolet radiation curable fluorescent varnish. The methods include determining a location of printed portions of an image on a substrate and digitally printing the ultraviolet radiation curable fluorescent varnish onto the substrate in image registration only upon one or more portions of the determined printed portions on the substrate.

Abstract: The invention is directed to a method by exposing at least a portion of a luminescent coating disposed on a surface of an article to ultraviolet light at one or more preselected wavelengths causing said luminescent coating to exhibit a luminescence spectrum, the luminescence spectrum exhibiting a plurality of intensity peaks that have been predetermined to create a standard; determining the intensity of at least two peaks in the luminescence spectrum of the coating; determining a peak intensity ratio of the at least two peaks; comparing the peak intensity ratio determined with the standard; and, classifying the article according to whether or not the peak intensity ratio does or does not match the standard; wherein the luminescent coating is a particulate luminescent composition comprising a rare earth doped fluoride represented by the chemical formula REx(CaaSrbBac)1?xF2+x?2yOy wherein RE represents a three-valent rare-earth element, 0.005?x?0.20, and 0?y?0.

Abstract: The present invention discloses an organic zinc precursor for depositing an zinc oxide layer on a substrate by metal organic chemical vapor deposition (MOCVD), which is a zinc-ligand complex having the following formula: wherein Y is O or NR7; R1, R2 and R3 independently are H, halogen, C1-8 alkyl, C1-8 haloalkyl, aryl or haloaryl; R4, R5 and R7 independently are C1-8 alkyl, C1-8 haloalkyl, aryl or haloaryl; R6 is H, halogen, C1-8 alkyl or C1-8 haloalkyl.

Abstract: The present invention relates to a polymeric nanocomposition of matter comprising a plurality of organic quantum dots. The composition includes at least one functionalized polymer chain template and a plurality of size-tunable organic quantum dots self-assembled onto the functionalized polymer chain template. The self-assembled organic quantum dots may be nanometer-scale molecular aggregates with size tunable by the functionalized polymer chain template. The polymer nanocomposite may be coated onto the surface of Ag or Au nanoparticles to achieve surface enhanced properties, such as, surface enhanced Raman effect. One embodiment of the polymer nanocomposites has shown unusual physicochemical property, which is especially suitable for use in optical devices including optical fibers, waveguides, Raman amplifiers, splitters, multiplexers, demultiplexers, attenuators, modulators, switches, and combination of such structures.

Abstract: Described are new custom postage printing stocks, coating compositions, processes for preparing and utilizing these and resulting postage products. Disclosed ink formulations comprise: invisible fluorescent dye and/or pigment (preferably red-fluorescent dye), which is fluorescent in the range of 580 to 640 nm when illuminated with light at 254 nm; water-soluble binder; substrate penetrant, fluorescence stabilizer; substrate anticurl agent and water. The inks, when coated on substrates and dried, can improve the quality and color of images printed as compared to images printed without the aid of the invention.