Disclosed is a colored luminescent composite pigment including an association of at least one luminescent pigment having an average particle size of between 50 and 2000 m and at least one coloring agent. Also disclosed are compositions and materials including the pigment, to the method for the production thereof and to the use of same for coloring materials, particularly of a hydraulic binder composition.

Provided are a fluorescent material and a light emitting device using the fluorescent material. The fluorescent material has a composition of a rare earth aluminum gallate containing at least one rare earth element Ln selected from the group consisting of Y, Gd, La, Lu, Sc and Sm; at least one Group 13 element selected from Al and Ga; Tb; Ce; and Eu. When a total molar composition ratio of Al and Ga is set to 5, a total molar ratio of Ln, and Tb, Ce and Eu is 3, a molar ratio of Tb is a product of 3 and a parameter a, a molar ratio of Ce is a product of 3 and a parameter b, a molar ratio of Eu is a product of 3 and a parameter c, a molar ratio of Ga is a product of 5 and a parameter d, the parameter a is 0.25 or more and less than 1, the parameter b is 0.00810.sup.2 or more and 1.510.sup.2 or less, the parameter c is 0.01210.sup.2 or more and 210.sup.2 or less, and the parameter d is 0 or more and 0.85 or less.

A marker for illuminating an area of an aircraft, the marker including a photoluminescent material arranged to emit blue visible light in response to an excitation and wherein the photoluminescent material has an emission spectrum with a maximum peak intensity of from 450 nm to 510 nm and optionally substantially 490 nm. The photoluminescent material has a performance characteristic such that the emissivity is at least 0.3 mcd/m.sup.2 12 hours after cessation of charging at 25 lux for 45 mins optionally at least 30 mcd/m.sup.2 6 hours after cessation of charging. The photoluminescent material comprises at least a main pigment containing a Europium and Dysprosium doped strontium aluminate with the formula Sr.sub.4Al.sub.14O.sub.25:Eu,Dy and optionally one or more further phosphorescent pigments. A marker system is disclosed for illuminating areas of an aircraft, the system including a plurality of markers in accordance with the invention. Also disclosed is an aircraft including a passenger cabin; and a marker system as disclosed.

The present invention relates to a nanostructured phosphorescent pigment comprising an Al.sub.2O.sub.3 substrate; MAl.sub.2O.sub.4:X nanocrystals, where M is a cation selected from Ca.sup.2+, Sr.sup.2+, Ba.sup.2+, Mg.sup.2+, Zn.sup.2+ and combinations thereof and where X is a cation selected from Eu.sup.2+, Dy.sup.3+, Nd.sup.3+, Er.sup.3+, La.sup.3+, Lu.sup.3+, Ce.sup.3+, Y.sup.3+, Sm.sup.3+, Gd.sup.3+, Tb.sup.3+, Tm.sup.3+, Yb.sup.3+ and combinations thereof, disposed on the Al.sub.2O.sub.3 substrate; and nanocrystals of molten salt disposed on the MAl.sub.2O.sub.4:X nanocrystals. Additionally, the invention relates to a method for preparing the nanostructured phosphorescent pigment of the invention comprising the steps of i) mixing starting materials comprising a cation M precursor, a cation X precursor, Al.sub.2O.sub.3 and a molten salt; ii) heating the mixture resulting from step (i) in reducing atmosphere. The invention also relates to the use of the nanostructured phosphorescent pigment of the invention for signaling, illumination, decoration or authentication and to a security article comprising the nanostructured phosphorescent pigment of the invention.

An emission enhancement structure having at least one energy augmentation structure; and an energy converter capable of receiving energy from an energy source, converting the energy and emitting therefrom a light of a different energy than the received energy. The energy converter is disposed in a vicinity of the at least one energy augmentation structure such that the emitted light is emitted with an intensity larger than if the converter were remote from the at least one energy augmentation structure. Also described are various uses for the energy emitters, energy augmentation structures and energy collectors in a wide array of fields, including various adhesives applications.

A card substrate laminating device includes a transfer ribbon and a transfer roller. The transfer ribbon includes a carrier layer and a transfer layer attached to the carrier layer. The transfer roller is configured to heat and transfer a portion of the transfer layer from the carrier layer to a surface of a card substrate. The transfer roller has a circumference that is less than one-half of a length of the card substrate.

An emission enhancement structure having at least one energy augmentation structure; and an energy converter capable of receiving energy from an energy source, converting the energy and emitting therefrom a light of a different energy than the received energy. The energy converter is disposed in a vicinity of the at least one energy augmentation structure such that the emitted light is emitted with an intensity larger than if the converter were remote from the at least one energy augmentation structure. Also described are various uses for the energy emitters, energy augmentation structures and energy collectors in a wide array of fields, particularly medical uses for treatment of cell proliferation disorders.

A luminescent composition of matter is characterized by the formula REM.sub.2+xE.sub.y, where RE may be one or more Rare Earth elements (for example, Eu or Gd), M may be one or more elements selected from the group Al, Ga, B, In, Sc, Lu, and Y; E is one or more elements selected from the group S, Se, O, and Te; x is greater than zero; and y has the value that achieves charge balance in the formula assuming that E has a charge of 2.

An inorganic oxide has a composition represented by General formula: M.sub.2LnX.sub.2(AlO.sub.4).sub.3 (where M includes Ca, Ln includes Eu, and X includes at least either one of Zr and Hf). Then, a crystal structure of the inorganic oxide is a garnet-type structure. Eu.sup.3+ in the inorganic oxide emits a plurality of bright line-like fluorescent components, and a principal bright line of the fluorescent component is present within a wavelength range of 600 nm or more to less than 628 nm. Moreover, a maximum height of the bright line present within a wavelength range of 700 nm or more to less than 720 nm is less than 60% of a maximum height of the principal bright line. A phosphor composed of the inorganic oxide can emit narrowband red light with good color purity.

A method of using a paint sensor to observe stress distributions of a stressed substrate includes the steps of applying a composition including a paintable medium and a mechanoluminescence material to a substrate, allowing the composition to form a solid film on the substrate, allowing the substrate to be stressed following the formation of the solid film, and measuring the stress the substrate has undergone by determining the mechanoluminescence of the solid film. A composition for visualizing stress or crack distributions includes a paintable medium and a mechanoluminescence material dispersed therein.