The present invention relates to a method for preparing a graphene-containing inorganic coating composition for coating non-ferrous metal objects and a graphene-containing inorganic coating composition prepared thereby, in which the inorganic coating composition contains liquid silica sol that emits far-infrared rays and powdery graphene that has very excellent thermal conductivity, and thus it emits far-infrared rays beneficial to the human body while having excellent durability and thermal conductivity. The method comprises: adding isopropyl alcohol as a solvent to liquid silica sol and a liquid sealant, followed by uniform stirring for 2-3 hours, thereby preparing a first liquid binder; adding powdery graphene, filler and pigment to the first liquid binder, followed by stirring for 8-10 hours, thereby preparing a second binder; and adding a predetermined amount of an adhesion-enhancing agent to the second binder, followed by aging at a temperature of 25 to 32 C. for 9 to 11 hours.

Provided are articles having a cellular structure and also having improved aging performance under certain types of illumination. Also provided are methods of utilizing the disclosed articles.

This invention provides a groundbreaking approach to PLNPs and their preparation. In particular, the synthetic methodology disclosed herein fundamentally differs from the traditional solid-state annealing reactions that require extreme and harsh reaction conditions. In one unique aspect of the invention, a simple, one-step mesoporous template method utilizing mesoporous silica nanoparticles (MSNs) is disclosed that affords in vivo rechargeable NIR-emitting mesoporous PLNPs with uniform size and morphology. In another unique aspect of the invention, the novel synthetic approach is based on aqueous-phase chemical reactions conducted in mild conditions, resulting in uniform and homogeneous PLNPs with desired size control (e.g., sub-10 nm).

Provided are a new phosphor having emission characteristics different from the conventional nitride or oxynitride phosphor, a manufacturing method, and a light-emitting device. In an embodiment, the phosphor may include inorganic substance having crystal represented by A.sub.26(D, E).sub.51X.sub.86 including at least A, D, X (A is at least one kind of element selected from Mg, Ca, Sr, and Ba; and D is Si, and X is at least one kind of element selected from O, N, and F); and further includes, if necessary, E (E is at least one kind of element selected from B, Al, Ga, and In) wherein the crystal further includes M (M is at least one kind of element selected from Mn, Ce, Pr, Nd, Sm, Eu, Tb, Dy, and Yb). Upon irradiation of excitation source, the maximum value of emission peak in a wavelength range from 630 nm to 850 nm may occur.

Lighting systems, methods, and devices for protecting human circadian neuroendocrine function during night use are described. Suitable lighting conditions can be provided for a working environment while protecting the circadian neuroendocrine systems of those occupying the illuminated workplace during the night. Lighting systems, methods, and devices can provide substantive attenuation of the pathologic circadian disruption in night workers. Lighting systems, methods, and devices can attenuate the specific bands of light implicated in circadian disruption. LED lighting systems, methods, and devices can provide increased intensity at a different portion of the spectrum than conventional LEDs, providing a useable white light even when unfavorable portions of the wavelength are attenuated by a notch filter. LED lighting systems, methods, and devices can switch between a daytime configuration and a night time configuration, wherein the daytime configuration provides unfiltered light and the night time configuration provides filtered light.

Disclosed are smoothing phosphors for AC LED lighting that are capable of prolonging the light emission time of an AC LED (or array of AC LEDs) during a cycle response to a phase change of the alternating current to substantially reduce flicker. The smoothing phosphor of the present teachings comprises a matrix represented by the formula: M.sub.(l-k-r-v)X.sub.(m-p)Al.sub.2(n-0.5x-0.5y)O.sub.3(n-0.5x-0.5y): Mn.sub.(x+p)O.sub.(x+p), Si.sub.yO.sub.2y, Eu.sub.k, R.sub.r, Li.sub.v wherein M is at least one of La.sub.2O.sub.3, Ce.sub.2O.sub.3, Gd.sub.2O.sub.3, Lu.sub.2O.sub.3, Ba.sub.2OF.sub.2, Sr.sub.2OF.sub.2, Ca.sub.2OF.sub.2, Ba.sub.2OCl.sub.2, Sr.sub.2OCl.sub.2, Ca.sub.2OCl.sub.2, BaO, SrO, CaO, or ZnO; provided that when M comprises BaO, SrO, CaO, or ZnO, M does not comprise La.sub.2O.sub.3, Ce.sub.2O.sub.3, Gd.sub.2O.sub.3, Lu.sub.2O.sub.3, Ba.sub.2OF.sub.2, Sr.sub.2OF.sub.2, Ca.sub.2OF.sub.2, Ba.sub.2OCl.sub.2, Sr.sub.2OCl.sub.2, or Ca.sub.2OCl.sub.2; X is at least one of MgO or ZnO; R is at least one of Sm, Pr, Tb, Dy, Er, or Ho; m=0 to 2; n=4 to 11; x=0.005 to 1; y=0.005 to 1; p=0 to 1; k=0 to 0.2; r=0 to 0.2; and v=0 to 0.2.

Disclosed are smoothing phosphors for AC LED lighting that are capable of prolonging the light emission time of an AC LED (or array of AC LEDs) during a cycle response to a, phase change of the alternating current to substantially reduce flicker. The smoothing phoshor of the present teachings comprises a matrix represented by the formula: (1krv)M.Math.(mp)X.Math.(n0.5x0.5y)Al.sub.2O.sub.3:(x+p)MnO, ySiO.sub.2, kEu, rR, vLi, wherein M is at least one of La.sub.2O.sub.3, Ce.sub.2O.sub.3, Gd.sub.2O.sub.3, Lu.sub.2O.sub.3, Ba.sub.2OF.sub.2, Sr.sub.2OF.sub.2, Ca.sub.2OF.sub.2, Ba.sub.2OCl.sub.2, Sr.sub.2OCl.sub.2, Ca.sub.2OCl, BaO, SrO, CaO, or ZnO; provided that when M comprises BaO, SrO, CaO, or ZnO, M does not comprise La.sub.2O.sub.3, Ce.sub.2O.sub.3, Gd.sub.2O.sub.3, Lu.sub.2O.sub.3, Ba.sub.2OF.sub.2, Sr.sub.2OF.sub.2, Ca.sub.2OF.sub.2, Ba.sub.2OCl.sub.2, Sr.sub.2OCl.sub.2, or Ca.sub.2OCl.sub.2; X is at least one of MgO or ZnO; R is at least one of Sm, Pr, Tb, Dy, Er, or Ho; m=0 to 2; n=4 to 11; x=0.005 to 1; y=0.005 to 1; p=0 to 1; k=0 to 0.2; r=0 to 0.2; and v=0 to 0.2.

The invention generally relates to fluorescent particles and more specifically to silica-based fluorescent nanoporous particles with physically encapsulated organic dyes. In one aspect of the invention, the nanoporous architecture provides a significant enhancement in fluorescence of the particles brightness compared to free dye. A particular chemical control of the silica matrix prevents the dye molecules from leaking the particles.

The silicate of magnesium and of barium, strontium or calcium of the invention is characterized in that it is in the form of a suspension of solid crystallized particles in a liquid phase, said particles having a mean size between 0.1 m and 1 m. It is prepared by spray-drying a liquid mixture comprising compounds of magnesium, of silicium and of at least one first element chosen from barium, strontium and calcium, by submitting the dried mixture to a first calcination in air and to a second calcination in a reducing atmosphere and by wet milling the calcined mixture.

Lighting systems, methods, and devices for protecting human circadian neuroendocrine function during night use are described. Suitable lighting conditions can be provided for a working environment while protecting the circadian neuroendocrine systems of those occupying the illuminated workplace during the night. Lighting systems, methods, and devices can provide substantive attenuation of the pathologic circadian disruption in night workers. Lighting systems, methods, and devices can attenuate the specific bands of light implicated in circadian disruption. LED lighting systems, methods, and devices can provide increased intensity at a different portion of the spectrum than conventional LEDs, providing a useable white light even when unfavorable portions of the wavelength are attenuated by a notch filter. LED lighting systems, methods, and devices can switch between a daytime configuration and a night time configuration, wherein the daytime configuration provides unfiltered light and the night time configuration provides filtered light.