Solution for use in filling micrometer-size cavities (10), the solution comprising a first solvent, a first polymer (102) having a first molecular weight, a second polymer (103) having a second molecular weight, luminophores (101) and a surfactant, the second molecular weight being 10 to 50 times greater than the first molecular weight.

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.

The present disclosure relates to a method of printing multi-nanoparticles using evaporation dynamics and surface energy control, the method includes: a step S1 of forming a pattern on a surface of a substrate by irradiating ultraviolet rays to a portion of the surface through a photomask; a step S2 of coating the substrate with a solution containing nanoparticles; and a step S3 of lowering surface energy of the coated nanoparticles.

A laminated glass luminescent concentrator is provided which includes a solid medium having a plurality of fluorophores disposed therein. In some embodiments, the fluorophore is a low-toxicity quantum dot. In some embodiments, the fluorophore has significantly reduced self-absorption, which allows for unperturbed waveguiding of the photoluminescence over a long distance. Also disclosed are apparatuses for generating electricity from the laminated glass luminescent concentrator, and its combination with buildings and vehicles.

A semiconductor nanoparticle includes a core and a shell covering a surface of the core. The shell has a larger bandgap energy than the core and is in heterojunction with the core. The semiconductor nanoparticle emits light when irradiated with light. The core is made of a semiconductor that contains M.sup.1, M.sup.2, and Z. M.sup.1 is at least one element selected from the group consisting of Ag, Cu, and Au. M.sup.2 is at least one element selected from the group consisting of Al, Ga, In and Tl. Z is at least one element selected from the group consisting of S, Se, and Te. The shell is made of a semiconductor that consists essentially of a Group 13 element and a Group 16 element.

Disclosed are nanostructures comprising Ag, In, Ga, and S and a shell comprising Ag, Ga and S, wherein the nanostructures have a peak wavelength emission of 480-545 nm and wherein at least about 80% of the emission is band-edge emission. Also disclosed are methods of making the nanostructures.

A fluorescent nanocomposite which includes a thallium doped gadolinium chalcogenide having formula Tl.sub.xGd.sub.1-xY, wherein x is 0.01 to 0.1, and Y is selected from the group consisting of S, Se, or Te, and a benzothiazolium salt bound to a surface of the thallium doped gadolinium chalcogenide. A method of detecting antimony ions in a fluid sample whereby the fluid sample is contacted with the fluorescent nanocomposite to form a mixture, and a fluorescence emission profile of the mixture is measured to determine a presence or absence of antimony ions in the fluid sample, wherein a reduction in intensity of a fluorescence emissions peak associated with the fluorescent nanocomposite indicates the presence of antimony ions in the fluid sample.

The present disclosure relates generally to nanoparticle formulations, and more specifically to nanoparticle and ligands used for imparting low-pH solubility in a range of solvents, including photoluminescent materials such as quantum dots.

A quantum dot has a fluorescent crystalline nanoparticle, wherein the quantum dot has a core-shell structure including a core particle containing a first metal element and a shell layer containing a second metal element, at an interface between the core particle and the shell layer, a third metal element different from the first metal element and the second metal element is present, and an amount of the third metal element with respect to an amount of the first metal element contained in the core particle is 10% or less in terms of molar ratio. As a result the quantum dot has excellent controllability of the emission wavelength and high luminous properties and luminous efficiency.

Disclosed are films comprising Ag, In, Ga, and S (AIGS) nanostructures and at least one ligand bound to the nanostructures. In some embodiment, the AIGS nanostructures have a photon conversion efficiency of greater than 32% and a peak wavelength emission of 480-545 nm. In some embodiments, the nanostructures have an emission spectrum with a FWHM of 24-38 nm.