Abstract: The present invention relates to particles comprising a core, in particular a magnetic core, and a first coating of a first shell material, wherein a second coating of a second shell material is applied to the surface of the first coating facing away from the core, the second shell material is different from the first shell material and has a higher refractive index than the first shell material.
Type:
Grant
Filed:
August 16, 2019
Date of Patent:
March 7, 2023
Assignee:
Ivoclar Vivadent AG
Inventors:
Kai Rist, Annette Schmidt, Ahmad Shaaban
Abstract: A quantum dot, and a quantum dot composite and a device including the same, wherein the quantum dot includes a seed including a first semiconductor nanocrystal, a quantum well layer disposed on the seed and a shell disposed on the quantum well layer, the shell including a second semiconductor nanocrystal, and wherein the quantum dot does not include cadmium, wherein the first semiconductor nanocrystal includes a first zinc chalcogenide, wherein the second semiconductor nanocrystal includes a second zinc chalcogenide, and the quantum well layer includes an alloy semiconductor nanocrystal including indium (In), phosphorus (P), and gallium (Ga), and wherein a bandgap energy of the alloy semiconductor nanocrystal is less than a bandgap energy of the first semiconductor nanocrystal and less than a bandgap energy of the second semiconductor nanocrystal.
Type:
Grant
Filed:
April 12, 2021
Date of Patent:
March 7, 2023
Assignee:
SAMSUNG DISPLAY CO., LTD.
Inventors:
Hyeyeon Yang, Jooyeon Ahn, Tae Gon Kim, Jongmin Lee, Shin Ae Jun
Abstract: Disclosed herein is a material, comprising a first metal halide that is operative to function as a scintillator; where the first metal halide excludes cesium iodide (ScI), strontium iodide (SrI2), cesium bromide (CsBr), thallium doped cesium iodide (CsI:Tl), europium doped strontium iodide (SrI2:Eu), europium doped barium iodide (BaI2;EU), cerium doped strontium iodide (SrI2:Ce), cerium doped barium iodide (BaI2:Ce), cerium doped lanthanum bromide (LaBr3:Ce), and cerium doped lutetium iodide (LuI3:Ce); and a surface layer comprising a second metal halide that is disposed on a surface of the first metal halide; where the second metal halide has a lower water solubility than the first metal halide.
Type:
Grant
Filed:
July 19, 2021
Date of Patent:
March 7, 2023
Assignee:
Siemens Medical Solutions USA, Inc.
Inventors:
Alexander Andrew Carey, Peter Carl Cohen, Mark S. Andreaco
Abstract: The wavelength converter includes a support, and a wavelength conversion layer disposed on the support. The wavelength conversion layer contains a fluorescent layer containing a fluorescent material with a composition represented by formula (1) below, and having a thickness of from 5 ?m to 155 ?m. A ratio of a sum of cross-sectional areas of particles of the fluorescent material in a cross-section of the wavelength conversion layer orthogonal to a disposed surface of the wavelength conversion layer that is disposed on the support and including a full width of the wavelength conversion layer to a cross-sectional area of the cross-section of the wavelength conversion layer is from 5% to 40%. In the formula (1), M1 is at least one selected from the rare earth elements other than La and Ce; a total amount of yttrium (Y), gadolinium (Gd), and lutetium (Lu) by mole with respect to a total amount of M1 by mole is 90% or more; and p, q, r, and s satisfy 2.7?p+q+r?3.3, 0?r?1.2, 10?s?12, and 0<q?1.2.
Type:
Grant
Filed:
September 29, 2021
Date of Patent:
March 7, 2023
Assignee:
NICHIA CORPORATION
Inventors:
Shigeki Yoshida, Hiroyuki Watanabe, Eri Matsuka
Abstract: A ferrite sintered magnet 100 comprises M-type ferrite crystal grains 4 and multiple-crystal grain boundaries 6b surrounded by three or more of the M-type ferrite crystal grains 4. The ferrite sintered magnet 100 contains at least Fe, Ca, B, and Si, and contains 0.005 to 0.9 mass % of B in terms of B2O3. The multiple-crystal grain boundaries 6b contain Si and Ca, and in a case where the molar ratio of Ca to Si in the multiple-crystal grain boundaries 6b is represented by (Ca/Si)G, the following formula is satisfied. 0.1<(Ca/Si)G<0.
Abstract: A semiconductor nanocrystal-ligand composite that includes a semiconductor nanocrystal and a ligand layer including an organic ligand coordinated on the surface of the semiconductor nanocrystal, wherein the organic ligand includes a moiety having a conjugation structure, and a first functional group (X) and a second functional group (Y) linked to the moiety having a conjugation structure, wherein the first functional group (X) is bound to the surface of the semiconductor nanocrystal and the second functional group (Y) is present at an ortho position with respect to the first functional group (X).
Type:
Grant
Filed:
May 31, 2019
Date of Patent:
February 28, 2023
Assignee:
SAMSUNG ELECTRONICS CO., LTD.
Inventors:
Tae Ho Kim, Chan Su Kim, Jaejun Chang, Eun Joo Jang, Hongkyu Seo
Abstract: The present disclosure provides a method of producing a magnetic powder capable of providing a bonded magnet having a high remanence. The present disclosure relates to a method of producing a magnetic powder, including: 1) mixing an alkyl silicate with an acidic solution; 2) mixing the resultant alkyl silicate mixture with a SmFeLaN anisotropic magnetic powder; and 3) mixing the resultant magnetic powder mixture with an alkali solution.
Abstract: High photoluminescence, high stability, inorganic perovskite compounds comprising an alkali metal selected from potassium (K), rubidium (Rb), and cesium (Cs); copper (Cu); and at least one halogen selected from chlorine (Cl), bromine (Br), and iodine (I). The perovskites may be free of lead (Pb). The inorganic perovskite compound may be used in an optoelectronic device. The optoelectronic device optionally contains a phosphor such as a blue-emitting phosphor. The inorganic perovskite compound may be used as an anti-counterfeiting nanotaggant applied on or within an object that susceptible to counterfeiting to enable confirmation of an authentic object.
Type:
Grant
Filed:
October 5, 2020
Date of Patent:
February 28, 2023
Assignee:
The Board of Regents of the University of Oklahoma
Inventors:
Bayram Saparov, Tielyr D. Creason, Rachel M. Roccanova, Aymen Yangui
Abstract: The present invention provides for a composition comprising a pigment, wherein the composition is suitable for coating a surface that is, or is expected to be, exposed to the sun. The pigment comprises particles that fluoresce in sunlight, thereby remaining cooler in the sun than coatings pigmented with non-fluorescent particles. The particles comprise solids that fluoresce or glow in the visible or near infrared (NIR) spectra, or that fluoresce when doped. Suitable dopants include, but are not limited to, ions of rare earths and transition metals. A coating composition includes: (i) a film-forming resin; (ii) an infrared reflective pigment; and (iii) an infrared fluorescent pigment different from the infrared reflective pigment.
Type:
Grant
Filed:
January 29, 2021
Date of Patent:
February 21, 2023
Assignees:
PPG Industries Ohio, Inc., The Regents of the University of California
Inventors:
Michael Andrew Zalich, Michael F. Baxter, Paul H. Berdahl, Stuart D. Hellring, Jeffrey Lynn Stalker
Abstract: Provided is a wavelength conversion member that is less decreased in luminescence intensity with time by irradiation with light of an LED or LD and a light emitting device using the wavelength conversion member. A wavelength conversion member is formed of an inorganic phosphor dispersed in a glass matrix, wherein the glass matrix contains, in % by mole, 30 to 85% SiO2, 0 to 20% B2O3, 0 to 25% Al2O3, 0 to 3% Li2O, 0 to 3% Na2O, 0 to 3% K2O, 0 to 3% Li2O+Na2O+K2O, 0 to 35% MgO, 0 to 35% CaO, 0 to 35% SrO, 0 to 35% BaO, 0.1 to 45% MgO+CaO+SrO+BaO, and 0 to 4% ZnO, and the inorganic phosphor is at least one selected from the group consisting of an oxide phosphor, a nitride phosphor, an oxynitride phosphor, a chloride phosphor, an oxychloride phosphor, a halide phosphor, an aluminate phosphor, and a halophosphate phosphor.
Abstract: A piezoelectric ceramic, which does not contain lead as a constituent element, is characterized in that: its primary component is a perovskite compound expressed by the composition formula (Bi0.5?x/2Na0.5?x/2Bax)(Ti1?yMny)O3 (where 0.01?x?0.25, 0.001?y?0.020); and the coefficient of variation (CV) in grain size among the grains contained therein is 35 percent or lower. The piezoelectric ceramic presents an improved dielectric loss tangent tan ?.
Abstract: A composition, method, and article of manufacture are disclosed. The microcapsule includes a polymer shell encapsulating a core component. The polymer shell includes light upconversion molecules. The article of manufacture includes the microcapsule. The method includes obtaining light upconversion molecules having sidechains with reactive functional groups, and forming a microcapsule. The microcapsule includes a polymer shell encapsulating a core component. The polymer shell includes light upconversion molecules. The article of manufacture includes the microcapsule.
Type:
Grant
Filed:
August 7, 2020
Date of Patent:
February 7, 2023
Assignee:
International Business Machines Corporation
Inventors:
Brandon M. Kobilka, Jason T. Wertz, Sarah K. Czaplewski-Campbell, Eric J. Campbell
Abstract: The present invention relates to a granular thermal insulation material comprising hydrophobized silicon dioxide and at least one IR opacifier, having a tamped density of up to 250 g/l and a compressive strength according to DIN EN 826:2013 at 50% compression of 150 to 300 kPa or greater than 300 kPa, to processes for production thereof and to the use thereof for thermal insulation.
Type:
Grant
Filed:
January 18, 2018
Date of Patent:
January 31, 2023
Assignee:
Evonik Operations GmbH
Inventors:
Matthias Geisler, Ann-Kathrin Herr, Christian Moers, Gabriele Gärtner
Abstract: Codoped lutetium-based oxyorthosilicate scintillators (e.g., lutetium oxyorthosilicase (LSO) and lutetium-ytrrium oxyorthosilicate (LYSO) scintillators) codoped with transition metal ions (e.g., Cu2+) are described. The codoping can alter one or more optical and/or scintillation property of the scintillator material. For example, the codoping can increase scintillation light yield and/or decrease scintillation decay time. Radiation detectors comprising the scintillators, methods of detecting high energy radiation using the radiation detectors, and methods of altering one or more scintillation and/or optical properties of a lutetium-based oxyorthosilicate scintillator are also described.
Type:
Grant
Filed:
April 3, 2020
Date of Patent:
January 24, 2023
Assignee:
University of Tennessee Research Foundation
Inventors:
Yuntao Wu, Merry A. Koschan, Charles L. Melcher
Abstract: The invention pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one organic solvent; (b) at least one population of nanostructures comprising a core and at least one shell, wherein the nanostructures comprise inorganic ligands bound to the surface of the nanostructures; and (c) at least one poly(alkylene oxide) additive. The nanostructure compositions comprising at least one poly(alkylene oxide) additive show improved solubility in organic solvents. And, the nanostructure compositions show increased suitability for use in inkjet printing. The disclosure also provides methods of producing emissive layers using the nanostructure compositions.
Type:
Grant
Filed:
September 10, 2020
Date of Patent:
January 17, 2023
Assignee:
Nanosys, Inc.
Inventors:
Christian Ippen, Donald Zehnder, Ruiqing Ma
Abstract: A ferrite sintered magnet comprising an M type Sr ferrite having a hexagonal structure as a main phase, wherein the ferrite sintered magnet comprises La and Co, a content of B is 0.005 to 0.9% by mass in terms of B2O3, a content of Zn is 0.01 to 1.2% by mass in terms of ZnO, and the ferrite sintered magnet satisfies [La]/[Zn]?0.79 and [Co]/[Zn]?0.67 when an atomic concentration of La is represented by [La], an atomic concentration of Co is represented by [Co], and an atomic concentration of Zn is represented by [Zn].
Abstract: Disclosed herein are embodiments of an enhanced resonant frequency hexagonal ferrite material and methods of manufacturing. The hexagonal ferrite material can be Y-phase strontium hexagonal ferrite material. In some embodiments, sodium can be added into the crystal structure of the hexagonal ferrite material in order to achieve high resonance frequencies while maintaining high permeability.
Abstract: The present invention provides: a liquid composition which can be suitably used for production of an optical film having a favorable fluorescence efficiency and includes quantum dots (A), a quantum dot-containing film obtained by drying and/or curing the liquid composition, an optical film for a light-emitting display element made of the quantum dot-containing film, a light-emitting display element panel including the optical film, and a light-emitting display equipped with the light-emitting display element panel. An ionic liquid (B), and a solvent (S) are incorporated into a liquid composition including quantum dots (A), in which the solvent (S) includes a solvent (S1), the solvent (S1) being a compound having a cyclic skeleton and including a heteroatom other than a hydrogen atom and a carbon atom.
Type:
Grant
Filed:
June 24, 2019
Date of Patent:
January 3, 2023
Assignee:
TOKYO OHKA KOGYO CO., LTD.
Inventors:
Takehiro Seshimo, Kunihiro Noda, Dai Shiota
Abstract: A method for preparing fluorescent-encoded microspheres coated with metal nanoshells is disclosed herein. By using SPG method, metal nano-material modified with a certain ligand is used as a new surfactant in the emulsification process, and different kinds and different amounts of fluorescent materials are doped into polymer microspheres to prepare fluorescent-encoded microspheres with different fluorescent-encoded signals and uniformly coated metal nanoshells in one step. The prepared fluorescent-encoded microsphere comprises a metal nanoshell, a polymer, and a fluorescent-encoded material. The fluorescent-encoded microsphere has a particle size of 1 ?m˜20 ?m, CV of less than 10%, which can be used for protein/nucleic acid detection.