Scintillating Or Lasing Compositions Patents (Class 252/301.17)
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Patent number: 11224656Abstract: There are provided, inter alia, compositions including a scintillator nanocrystal linked to a chemical agent moiety through a scintillator-activated photocleavable linker, and methods of use thereof.Type: GrantFiled: November 16, 2020Date of Patent: January 18, 2022Assignee: The Regents of the University of CaliforniaInventors: Milan T. Makale, Wolfgang J. Wrasidlo, Santosh Kesari, Joanna McKittrick, Gustavo A. Hirata Flores, Olivia Graeve
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Patent number: 11063403Abstract: A solid-state laser device includes an inner container, an outer container, a cooling medium supply unit, and a cover section. The inner container in which a laser medium is accommodated includes an inner light-transmitting unit. An outer light-transmitting unit of the outer container is provided at a part that faces the inner light-transmitting unit and is vacuum-insulated from the inner light-transmitting unit. The cooling medium supply unit supplies a cooling medium so that the cooling medium comes in contact with a surface other than a light input and output surface in the laser medium. The cover section partitions a light-passing area from a cooling medium supply area to which the cooling medium is supplied.Type: GrantFiled: January 12, 2017Date of Patent: July 13, 2021Assignee: MITSUBISHI HEAVY INDUSTRIES, LTD.Inventors: Koichi Hamamoto, Ryuichi Matsuda
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Patent number: 10864272Abstract: There are provided, inter alia, compositions including a scintillator nanocrystal linked to a chemical agent moiety through a scintillator-activated photocleavable linker, and methods of use thereof.Type: GrantFiled: February 24, 2016Date of Patent: December 15, 2020Assignee: The Regents of the University of CaliforniaInventors: Milan T. Makale, Wolfgang J. Wrasidlo, Santosh Kesari, Joanna McKittrick, Gustavo A. Hirata Flores, Olivia Graeve
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Patent number: 10800966Abstract: Pyrazoline-based fluorophores and plastic scintillators incorporating the fluorophores are described. The fluorophores include 1,3,5-triaryl substituted pyrazolines. A fluorophore of a plastic scintillator can be a 1-phenyl-4,5-1H-dihydroyrazole having the structure: in which R1 and R2 are independently selected from a heteroaryl group including one or more of an oxygen, selenium or sulfur atom in the ring; an aryl halide group; or a phenyl alkyl including a C1 to C18 saturated or unsaturated alkyl that optionally includes a reactive functionality.Type: GrantFiled: April 21, 2017Date of Patent: October 13, 2020Assignees: Clemson University Research Foundation, Institute of Organic Chemistry, National Academy of Science of UkraineInventors: Valery N. Bliznyuk, Ayman F. Seliman, Timothy A. DeVol, Nadezhda A. Derevyanko, Alexander A. Ishchenko
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Patent number: 10670790Abstract: An illumination and imaging system that is used to obtain enhanced detailed images of objects. The system utilizes a flash element that produces a flash of polychromatic light. A plurality of fiber optic elements are provided that terminate with output ends. At least some of the fiber optic elements are doped to be different colors. Consequently, when each fiber optic element receives the flash of polychromatic light from the flash element, that fiber optic element propagates and filters the polychromatic light to produce colored filtered light. The colored filtered light is directed toward the object being imaged by the camera. The illumination has small points of origin, different color characteristics and simultaneous short flash duration. The combination of colored, directional light sources enables the camera to image very fine details by enhancing surface texture and embedding the image with the color photometric stereo information.Type: GrantFiled: August 11, 2015Date of Patent: June 2, 2020Inventor: Michael Braithwaite
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Patent number: 10627340Abstract: Imaging systems and methods using fluorescent nanodiamonds are disclosed. The imaging systems and methods including applying a time-varying magnetic field to a specimen containing fluorescent nanodiamonds and comparing the fluorescence obtained with different magnetic fields to provide an image of the specimen.Type: GrantFiled: April 8, 2016Date of Patent: April 21, 2020Assignees: BIKANTA CORPORATION, THE UNITED STATES OF AMERICA, AS REPRESENTED BY THE SECRETARY, DEPARTMENT OF HEALTH AND HUMAN SERVICESInventors: Ambika Bumb, Keir Cajal Neuman
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Patent number: 10175406Abstract: A waveguide in which coherent light is to propagate along its longitudinal axis has formed therein a first scattering zone (103) that runs along the longitudinal axis and that is to scatter the propagating coherent light (105) out of the waveguide at a non-zero angle relative to the longitudinal axis. Means for vibrating a light spot of the coherent light relative to the waveguide, or means for dynamically changing a focus of the light spot, is provided, so that light coupling of the coherent light into the waveguide changes over time thereby generating different speckle patterns in the waveguide that overlap with the first scattering zone. Other embodiments are also described and claimed including one where a functional or diffusing coating (102) is provided that in combination with the first scattering zone yields a reduced speckle pattern.Type: GrantFiled: July 14, 2014Date of Patent: January 8, 2019Assignee: L.E.S.S. Ltd.Inventor: Yann Tissot
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Patent number: 10150914Abstract: Disclosed herein is a scintillator comprising a plurality of garnet compositions in a single block having the structural formula (1): M1aM2bM3cM4dO12??(1) where O represents oxygen, M1, M2, M3, and M4 represents a first, second, third and fourth metal that are different from each other, where the sum of a+b+c+d is about 8, where “a” has a value of 2 to 3.5, “b” has a value of 0 to 5, “c” has a value of 0 to 5 “d” has a value of 0 to 1, where “b” and “c”, “b” and “d” or “c” and “d” cannot both be equal to zero simultaneously, where M1 is rare earth element including gadolinium, yttrium, lutetium, or a combination thereof, M2 is aluminum or boron, M3 is gallium and M4 is a codopant; wherein two compositions having identical structural formulas are not adjacent to each other and wherein the single block is devoid of optical interfaces between different compositions.Type: GrantFiled: November 25, 2015Date of Patent: December 11, 2018Assignee: Siemens Medical Solutions USA, Inc.Inventors: Robert A. Mintzer, Peter Carl Cohen, Mark S. Andreaco, Matthias J. Schmand
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Patent number: 9864077Abstract: The invention is directed to a method for making a boron containing compound, a method for making a plastic scintillator and a method for forming a neutron detecting material, and the materials made therein. Methods of use are also disclosed.Type: GrantFiled: December 17, 2015Date of Patent: January 9, 2018Inventors: Alan Sellinger, Uwe Greife, Henok Yemam, Adam Mahl
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Patent number: 9744578Abstract: Roll forming is used for re-shaping an iridium crucible. The crucible is placed on a platen. The platen rotates the crucible while heat is applied by a plurality of torches. A plurality of rollers press on the rotating, heated crucible to re-shape. The roll forming allows for a greater number of repetitions of the re-shaping, increasing the number of uses per expensive re-fabrication of the crucible. The roll forming may provide more exact re-shaping.Type: GrantFiled: April 1, 2016Date of Patent: August 29, 2017Assignee: Siemens Medical Solutions USA, Inc.Inventors: Mark S. Andreaco, Troy Marlar, Brant Quinton, James L. Corbeil
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Patent number: 9650564Abstract: A scintillator material according to one embodiment includes a polymer matrix; a primary dye in the polymer matrix, the primary dye being a fluorescent dye, the primary dye being present in an amount of 3 wt % or more; and at least one component in the polymer matrix, the component being selected from a group consisting of B, Li, Gd, a B-containing compound, a Li-containing compound and a Gd-containing compound, wherein the scintillator material exhibits an optical response signature for thermal neutrons that is different than an optical response signature for fast neutrons and gamma rays. A system according to one embodiment includes a scintillator material as disclosed herein and a photodetector for detecting the response of the material to fast neutron, thermal neutron and gamma ray irradiation.Type: GrantFiled: May 14, 2012Date of Patent: May 16, 2017Assignee: Lawrence Livermore National Security, LLCInventors: Natalia P. Zaitseva, M. Leslie Carman, Michelle A. Faust, Andrew M. Glenn, H. Paul Martinez, Iwona A. Pawelczak, Stephen A. Payne, Keith E. Lewis
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Patent number: 9645258Abstract: The various technologies presented herein relate to incorporating a wavelength-shifting material in a scintillator to facilitate absorption of a first electromagnetic particle (e.g., a first photon) having a first wavelength and subsequent generation and emission of a second electromagnetic particle (e.g., a second photon) having a second wavelength. The second electromagnetic particle can be emitted isotropically, with a high probability that the direction of emission of the second electromagnetic particle is disparate to the direction of travel of the first electromagnetic particle (and according angle of incidence). Isotropic emission of the second electromagnetic particle enables the second electromagnetic particle to be retained in the scintillator owing to internal reflection. Accordingly, longer length scintillators can be constructed, and accordingly, the scintillator array has a greater area (and volume) over which to detect electromagnetic particles (e.g.Type: GrantFiled: November 25, 2014Date of Patent: May 9, 2017Assignee: Sandia CorporationInventor: David Reyna
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Patent number: 9588229Abstract: An enhanced multifunctional paint apparatus, systems, and methods for detecting radiation on a surface include providing scintillation particles; providing an enhance neutron absorptive material; providing a binder; combining the scintillation particles, the enhance neutron absorptive material, and the binder creating a multifunctional paint; applying the multifunctional paint to the surface; and monitoring the surface for detecting radiation.Type: GrantFiled: March 17, 2015Date of Patent: March 7, 2017Assignee: Lawrence Livermore National Security, LLCInventors: Joseph C. Farmer, Edward Ira Moses, Alexander M. Rubenchik
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Patent number: 9459356Abstract: Disclosed is a novel composition for radiation image detector. The composition comprises an organic matrix comprising a charge transport material (CTM); and scintillating particles for absorbing radiation, being dispersed in the organic matrix, wherein the scintillating particles are in contact with a charge generation material (CGM).Type: GrantFiled: August 2, 2012Date of Patent: October 4, 2016Assignee: VIEWORKS CO., LTD.Inventors: Denny Lap Yen Lee, Hyun Suk Jang
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Patent number: 9429663Abstract: A composition of matter includes an organic molecule having a composition different than stilbene. The organic molecule is embodied as a crystal, and exhibits: an optical response signature for neutrons; an optical response signature for gamma rays, and performance comparable to or superior to stilbene in terms of distinguishing neutrons from gamma rays. The optical response signature for neutrons is different than the optical response signature for gamma rays.Type: GrantFiled: April 9, 2014Date of Patent: August 30, 2016Assignee: Lawrence Livermore National Security, LLCInventors: Stephen A. Payne, Wolfgang Stoeffl, Natalia P. Zaitseva, Nerine J. Cherepy, M. Leslie Carman
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Patent number: 9309456Abstract: In one embodiment, a scintillator material includes a polymer matrix; and a primary dye in the polymer matrix, the primary dye being a fluorescent dye, the primary dye being present in an amount of 5 wt % or more; wherein the scintillator material exhibits an optical response signature for neutrons that is different than an optical response signature for gamma rays. In another embodiment, a scintillator material includes a polymer matrix; and a primary dye in the polymer matrix, the primary dye being a fluorescent dye, the primary dye being present in an amount greater than 10 wt %.Type: GrantFiled: April 2, 2012Date of Patent: April 12, 2016Assignee: Lawrence Livermore National Security, LLCInventors: Natalia P. Zaitseva, M Leslie Carman, Nerine Cherepy, Andrew M. Glenn, Sebastien Hamel, Stephen A. Payne, Benjamin L. Rupert
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Patent number: 9274237Abstract: In one embodiment, a scintillator includes a scintillator material; a primary fluor, and a Li-containing compound, where the Li-containing compound is soluble in the primary fluor, and where the scintillator exhibits an optical response signature for thermal neutrons that is different than an optical response signature for fast neutrons and gamma rays.Type: GrantFiled: April 15, 2014Date of Patent: March 1, 2016Assignee: Lawrence Livermore National Security, LLCInventors: Natalia P. Zaitseva, M. Leslie Carman, Michelle A. Faust, Andrew M. Glenn, H. Paul Martinez, Stephen A. Payne
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Publication number: 20150123036Abstract: Embodiments of the subject invention relate to high efficiency plastic scintillators that emit intense light when exposed to ionizing radiation. Specific embodiments of the subject invention pertain to material compositions for providing high-intensity, scintillation light output in the presence of ions, which can be used for making scintillators more sensitive to the presence of ionizing radiation.Type: ApplicationFiled: November 5, 2014Publication date: May 7, 2015Inventors: JAMES K. WALKER, Youngwook Noh, Richard T. Farley
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Patent number: 8993968Abstract: Embodiments of the invention provide a scintillator material, a scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material that comprises chromophores. Additional embodiments provide a scintillator material, scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material having one, two, three, or more, organic dyes dissolved therein wherein the polymer material having the one, two, three, or more dyes dissolved therein comprises chromophores. At least one of the dyes, termed the base dye, has a concentration in the range 0.5 to 3.5 mol/L. In a specific embodiment, the base dye has a concentration in the range 1.0 to 3.0 mol/L. This base dye concentration is high enough to achieve a substantial triplet-triplet state annihilation rate despite the negligible diffusion of the dye in the rigid polymer matrix.Type: GrantFiled: March 26, 2012Date of Patent: March 31, 2015Assignee: Nanoptics, IncorporatedInventors: James K. Walker, Youngwook Noh, Richard T. Farley
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Publication number: 20150028217Abstract: In one embodiment, a scintillator includes a scintillator material; a primary fluor, and a Li-containing compound, where the Li-containing compound is soluble in the primary fluor, and where the scintillator exhibits an optical response signature for thermal neutrons that is different than an optical response signature for fast neutrons and gamma rays.Type: ApplicationFiled: April 15, 2014Publication date: January 29, 2015Applicant: Lawrence Livermore National Sercurity, LLCInventors: Natalia P. Zaitseva, M. Leslie Carman, Michelle A. Faust, Andrew M. Glenn, H. Paul Martinez, Stephen A. Payne
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Publication number: 20150014588Abstract: Described herein is a boron-loaded liquid scintillator composition comprising a scintillation solvent including at least one linear alkylbenzene (LAB), diisopropyl naphthalene (DIN) or phenylxylyl ethane (PXE), or a combination of one or more thereof; at least one boron-containing material; one or more fluors, such as 2,5-diphenyloxazole (PPO), and optionally one or more wavelength shifters, such as 1,4-bis[2-methylstyryl]benzene (bis-MSB). The boron-containing material may comprise a carborane, such as o-carborane, especially those enriched in Boron-10. Methods of preparation of the liquid scintillator composition are also described, as well as concentrates thereof.Type: ApplicationFiled: February 15, 2013Publication date: January 15, 2015Inventors: Xiongxin DAI, Bhaskar SUR, Ghaouti BENTOUMI, Liqian LI, Guy JONKMANS
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Patent number: 8907292Abstract: A tungstate-based scintillating material and a method for using a tungstate-based scintillating material is provided. In addition, a radiation detector and an imaging device incorporating a tungstate-based scintillating material are provided.Type: GrantFiled: December 16, 2010Date of Patent: December 9, 2014Assignee: Koninklijke Philips N.V.Inventors: Thomas Juestel, Cornelis Reinder Ronda
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Publication number: 20140346400Abstract: A method for the synthesis and use of transparent bulk conjugated polymers prepared from liquid monomers via bulk polymerization. The liquid monomer contains pi-electron conjugated moieties and polymerizable moieties. The monomer solution may also have functionalizing additives such as a luminescence additive that includes organic dyes, luminescent molecules, fluorescent compounds, phosphorescent compounds, and luminescent quantum dots. The monomer solution may also have sensitizing additives such as high-energy photo sensitizing compounds, nanoparticles of compounds containing atoms with atomic numbers greater than 52 and neutron sensitizing additives. The monomer solution is polymerized by heating to an elevated temperature with or without addition of an initiator. Alternatively, the monomer is polymerized by photo-induced polymerization. A photoinitiator may be employed to initiate the photopolymerization. Scintillation materials with significant light yields are illustrated.Type: ApplicationFiled: June 2, 2014Publication date: November 27, 2014Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIAInventors: Qibing Pei, Qi Chen
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Patent number: 8894881Abstract: The invention relates to the use of 1,8-naphthalimide derivatives and of their salts as scintillation agents and more specifically as agents for discriminating between fast neutrons and gamma rays. It also relates to liquid scintillators comprising these scintillation agents in solution in a solvent and to novel 1,8-naphthalimide derivates of use as scintillation agents, in particular for discriminating between fast neutrons and gamma rays. Applications: all the fields of use of scintillators and in particular industry, geophysics, fundamental physics, in particular nuclear physics, the safety of goods and people, protection from radiation of workers in the industrial, nuclear and medical sectors, medical imaging, and the like.Type: GrantFiled: January 27, 2009Date of Patent: November 25, 2014Assignee: Commissariat a l'energie atomique et aux energies alternativesInventors: Matthieu Hamel, Stéphane Normand, Vesna Simic
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Publication number: 20140332689Abstract: Compositions, methods, and systems related to plastic scintillating materials based on a polymer including an aromatic ring structure combined with an oxazole and a cross-linker are disclosed. The disclosed plastic scintillator materials may advantageously provide gamma-neutron pulse shape discrimination capabilities.Type: ApplicationFiled: April 11, 2014Publication date: November 13, 2014Applicant: Radiation Monitoring Devices, Inc.Inventors: Edgar V. Van Loef, Kanai S. Shah, Gary Markosyan
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Patent number: 8858831Abstract: Scintillator compositions are provided which include a solvent or matrix containing a fluorophore having the formula (I) and/or a fluorophore having the formula (II), wherein R1 and R2, being identical or different, are independently chosen from the group consisting of hydrogen, halogen, alkyl which optionally contains one or more heteroatoms, alkoxy, aryl and alkyne with an aryl end group; R3 is chosen from the group consisting of hydrogen, alkyl which optionally contains one or more heteroatoms, aryl, heterocycle, ether and ester; R4 and R5, being identical or different, are independently chosen from the group consisting of hydrogen, alkyl which optionally contains one or more heteroatoms, aryl, heterocycle, ether and ester, whereby the R4 and R5 groups are optionally combined to one cyclic structure; and R6, if present, is chosen from the group consisting of hydrogen, aryl and alkyl.Type: GrantFiled: April 11, 2012Date of Patent: October 14, 2014Assignee: Stichting Incas3Inventors: Peter Dijkstra, Heinrich Johannes Wörtche
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Patent number: 8766197Abstract: Disclosed is a radiation detection element which can inexpensively be manufactured. The detection element including, as a main component, a base resin not containing any fluorescent substance at all is used for radiation measurement.Type: GrantFiled: May 6, 2010Date of Patent: July 1, 2014Assignee: National Institute of Radiological SciencesInventor: Hidehito Nakamura
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Publication number: 20140166890Abstract: A resin for scintillators having high radiation sensitivity, which is obtained without using a wavelength conversion agent. The resin for the scintillator of a radiation detector contains a polyester having a unit represented by the following formula (1). (In the above formula (1), Ar is a naphthalenediyl group or an anthracenediyl group all of which may be substituted by an alkyl group having 1 to 6 carbon atoms or a halogen atom. X is an aliphatic hydrocarbon group having 2 to 20 carbon atoms, an alicyclic hydrocarbon group having 2 to 20 carbon atoms or an aromatic hydrocarbon group having 5 to 20 carbon atoms all of which may be substituted by an alkyl group having 1 to 6 carbon atoms or a halogen atom.Type: ApplicationFiled: February 2, 2012Publication date: June 19, 2014Applicants: NATIONAL INSTITUTE OF RADIOLOGICAL SCIENCES, TEIJIN LIMITEDInventors: Hisayoshi Shimizu, Fumio Murakawa, Zenichiro Shidara, Hidehito Nakamura, Yoshiyuki Shirakawa
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Publication number: 20140131620Abstract: Embodiments relate to an advanced fast and thermal neutron detector material composition with the properties useful for Special Nuclear Material (SNM) detection. Specific embodiments of the material composition result in two excimer scintillation light production mechanisms that provide two corresponding independent techniques for gamma discrimination; namely Pulse Shape Discrimination and Pulse Height Discrimination. A dual discrimination method, Pulse Shape and Pulse Height Discrimination (PSHD), can be implemented relying on both pulse height discrimination and pulse shape discrimination, and can allow the operation of large area, fast and thermal neutron detectors.Type: ApplicationFiled: October 16, 2013Publication date: May 15, 2014Applicant: NANOPTICS, INCORPORATEDInventors: JAMES K. WALKER, YOUNGWOOK NOH, RICHARD T. FARLEY
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Patent number: 8724214Abstract: An optical upconverting nanomaterial includes a nanocrystal, a ligand layer directly bonded to the nanocrystal, and an optical antenna directly or indirectly bonded to the nanocrystal. The nanocrystal includes a transition metal-doped material exhibiting upconversion to optical wavelengths. The transition metal-doped material includes energy transfer facilitating transition metal dopants and (not necessarily distinct) emitter transition metal dopants, where an absorption spectrum of the energy transfer facilitating transition metal dopants overlaps with an emission spectrum of the optical antenna. The optical upconverting nanomaterial has at least one linear dimension (e.g., width or thickness) that is less than 150 nm in extent.Type: GrantFiled: September 7, 2012Date of Patent: May 13, 2014Assignee: Voxtel, Inc.Inventors: David M. Schut, Charles G. Dupuy, George M. Williams, Thomas L. Allen
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Publication number: 20140124677Abstract: A mixed organic crystal according to one embodiment includes a single mixed crystal having two compounds with different bandgap energies, the organic crystal having a physical property of exhibiting a signal response signature for neutrons from a radioactive source, wherein the signal response signature does not include a significantly-delayed luminescence characteristic of neutrons interacting with the organic crystal relative to a luminescence characteristic of gamma rays interacting with the organic crystal. According to one embodiment, an organic crystal includes bibenzyl and stilbene or a stilbene derivative, the organic crystal having a physical property of exhibiting a signal response signature for neutrons from a radioactive source.Type: ApplicationFiled: November 7, 2012Publication date: May 8, 2014Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventor: Lawrence Livermore National Security, LLC
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Patent number: 8697982Abstract: A radiation-emitting polymer composition includes a polysiloxane polymer including tritium and a wavelength-shifter chemically bonded as a side chain to the polysiloxane polymer or chemically bonded as a side chain to a siloxane carrier dispersed within the polysiloxane polymer. The wavelength-shifter includes a plurality of cyclic chemical moieties and emits electromagnetic radiation in response to radiation emitted by the tritium.Type: GrantFiled: October 28, 2013Date of Patent: April 15, 2014Assignee: LEP America, IncorporatedInventors: James W. Smith, Bruce McKague
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Patent number: 8698086Abstract: A scintillator material according to one embodiment includes a bismuth-loaded aromatic polymer having an energy resolution at 662 keV of less than about 10%. A scintillator material according to another embodiment includes a bismuth-loaded aromatic polymer having a fluor incorporated therewith and an energy resolution at 662 keV of less than about 10%. Additional systems and methods are also presented.Type: GrantFiled: June 16, 2011Date of Patent: April 15, 2014Assignee: Lawrence Livermore National Security, LLCInventors: Nerine Jane Cherepy, Robert Dean Sanner, Stephen Anthony Payne, Benjamin Lee Rupert, Benjamin Walter Sturm
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Patent number: 8663820Abstract: The invention relates to a printed document of value having at least one authenticity feature in the form of a luminescent substance based on doped host lattices. The host lattice has a strong crystal field and is doped with at least one chromophore with the electron configuration (3d)2.Type: GrantFiled: March 5, 2002Date of Patent: March 4, 2014Assignee: Giesecke & Devrient GmbHInventors: Thomas Giering, Rainer Hoppe, Fritz Stahr
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Publication number: 20140027646Abstract: In one embodiment, a scintillator material includes a polymer matrix; and a primary dye in the polymer matrix, the primary dye being a fluorescent dye, the primary dye being present in an amount of 5 wt % or more; wherein the scintillator material exhibits an optical response signature for neutrons that is different than an optical response signature for gamma rays. In another embodiment, a scintillator material includes a polymer matrix; and a primary dye in the polymer matrix, the primary dye being a fluorescent dye, the primary dye being present in an amount greater than 10 wt %.Type: ApplicationFiled: April 2, 2012Publication date: January 30, 2014Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Natalia P. Zaitseva, M Leslie Carman, Nerine Cherepy, Andrew M. Glenn, Sebastien Hamel, Stephen A. Payne, Benjamin L. Rupert
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Publication number: 20130299702Abstract: A scintillator material according to one embodiment includes a polymer matrix; a primary dye in the polymer matrix, the primary dye being a fluorescent dye, the primary dye being present in an amount of 3 wt % or more; and at least one component in the polymer matrix, the component being selected from a group consisting of B, Li, Gd, a B-containing compound, a Li-containing compound and a Gd-containing compound, wherein the scintillator material exhibits an optical response signature for thermal neutrons that is different than an optical response signature for fast neutrons and gamma rays. A system according to one embodiment includes a scintillator material as disclosed herein and a photodetector for detecting the response of the material to fast neutron, thermal neutron and gamma ray irradiation.Type: ApplicationFiled: May 14, 2012Publication date: November 14, 2013Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Natalia P. Zaitseva, M Leslie Carman, Michelle A. Faust, Andrew M. Glenn, H. Paul Martinez, Iwona A. Pawelczak, Stephen A. Payne, Keith E. Lewis
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Patent number: 8569610Abstract: A light-emitting polymer composition includes a polysiloxane polymer having tritium that emits radiation and a wavelength-shifter chemically bonded to the polysiloxane polymer or a siloxane carrier dispersed within the polysiloxane polymer. The wavelength-shifter emits light in response to the radiation.Type: GrantFiled: August 23, 2010Date of Patent: October 29, 2013Assignee: Power and Light Sources, IncorporatedInventors: James W. Smith, Bruce McKague
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Publication number: 20130270443Abstract: Scintillator compositions are provided which include a solvent or matrix containing a fluorophore having the formula (I) and/or a fluorophore having the formula (II), wherein R1 and R2, being identical or different, are independently chosen from the group consisting of hydrogen, halogen, alkyl which optionally contains one or more heteroatoms, alkoxy, aryl and alkyne with an aryl end group; R3 is chosen from the group consisting of hydrogen, alkyl which optionally contains one or more heteroatoms, aryl, heterocycle, ether and ester; R4 and R5, being identical or different, are independently chosen from the group consisting of hydrogen, alkyl which optionally contains one or more heteroatoms, aryl, heterocycle, ether and ester, whereby the R4 and R5 groups are optionally combined to one cyclic structure; and R6, if present, is chosen from the group consisting of hydrogen, aryl and alkyl.Type: ApplicationFiled: April 11, 2012Publication date: October 17, 2013Applicant: STICHTING INCAS3Inventors: Peter Dijkstra, Heinrich Johannes Wörtche
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Patent number: 8535765Abstract: A method of producing a low-molecular luminous material dispersant having: inserting a coat agent in gas phase and an inner gas into a vacuum atmosphere, wherein the coat agent has a strong affinity for a solvent when the coat agent is in liquid phase; heating and vaporizing a low-molecular luminous material in the vacuum atmosphere so as to obtain a mix gas comprising the low-molecular luminous material and inner gas; cooling the mix gas so as to obtain a coat agent in liquid phase; and recovering the coat agent in liquid phase and adding the coat agent in liquid phase into the solvent so as to obtain the low-molecular luminous material dispersant.Type: GrantFiled: September 9, 2009Date of Patent: September 17, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Naoaki Sakurai, Hiroyasu Kondo, Hiroshi Koizumi
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Publication number: 20130128131Abstract: A luminescent solar concentrator (10) is disclosed. The luminescent solar concentrator (10) has a light guide (12) defined at least in part by a reflector (14). It has a plurality of light absorbing centers (24) located in the light guide. The light absorbing centers (24) are configured to absorb sunlight (25) instant on the light guide (12). There are a plurality of light emitting centers (26) located in the light guide (14). Each of the plurality of light emitting centers (26) are capable of emitting light (18) after at least some of the energy of the absorbed sunlight (25) is transferred (28) from a respective one of the light absorbing centers (24). Each of the plurality of light emitting centers (26) are orientated relative to the reflector (14) to enhance the proportion of light emitted by the respective light emitting center (26) that is reflected by the reflector (14) and so guided within the light guide (12).Type: ApplicationFiled: April 13, 2011Publication date: May 23, 2013Applicant: THE UNIVERSITY OF SYDNEYInventors: Timothy Schmidt, Rowan Macqueen
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Publication number: 20130126787Abstract: The present invention relates to a photoluminescent composition comprising an acene compound having general formula (I) or (Ia) and a benzothiadiazole compound having general formula (II), and the relative use as photoluminescent composition in a spectrum converter. A spectrum converter comprising the photoluminescent composition defined above, comprising the above compounds having general formula (I) or (Ia) and (II) and a solar device comprising said spectrum converter, are also described.Type: ApplicationFiled: October 14, 2010Publication date: May 23, 2013Applicant: ENI S.p.AInventors: Andrea Alessi, Roberto Fusco, Antonio Alfonso Proto, Giuliana Schimperna, Petra Scudo
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Publication number: 20130026371Abstract: Embodiments of the present disclosure provide for nanoparticles, methods of making nanoparticles, materials including nanoparticles, the use of materials including nanoparticles, and the like.Type: ApplicationFiled: May 1, 2012Publication date: January 31, 2013Applicants: CLEMSON UNIVERSITY, UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC.Inventors: Paul Howard Holloway, Jihun Choi, Teng-Kuan Tseng, Luiz G. Jacobsohn
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Publication number: 20120326042Abstract: An organic crystal according to one embodiment includes an organic crystal comprising diphenylacetylene and stilbene or a stilbene derivative, the crystal having physical characteristics of formation from solution, the organic crystal exhibiting a signal response signature for neutrons from a radioactive source. A system according to one embodiment includes an organic crystal comprising diphenylacetylene and stilbene or a stilbene derivative, the crystal having physical characteristics of formation from solution, the organic crystal exhibiting a signal response signature for neutrons from a radioactive source; and a photodetector for detecting the signal response of the organic crystal. Methods of making such crystals are also provided.Type: ApplicationFiled: May 22, 2012Publication date: December 27, 2012Applicant: LAWRENCE LIVERMORE NATIONAL SECURITY, LLCInventors: Natalia Zaitseva, M. Leslie Carman, Steve Payne
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Publication number: 20120241630Abstract: Embodiments of the invention provide a scintillator material, a scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material that comprises chromophores. Additional embodiments provide a scintillator material, scintillator system, and/or a method of detecting incident radiation using a scintillator material, or scintillator system, comprising a polymer material having one, two, three, or more, organic dyes dissolved therein wherein the polymer material having the one, two, three, or more dyes dissolved therein comprises chromophores. At least one of the dyes, termed the base dye, has a concentration in the range 0.5 to 3.5 mol/L. In a specific embodiment, the base dye has a concentration in the range 1.0 to 3.0 mol/L. This base dye concentration is high enough to achieve a substantial triplet-triplet state annihilation rate despite the negligible diffusion of the dye in the rigid polymer matrix.Type: ApplicationFiled: March 26, 2012Publication date: September 27, 2012Applicant: NANOPTICS, INCORPORATEDInventors: JAMES K. WALKER, YOUNGWOOK NOH, RICHARD T. FARLEY
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Patent number: 8269409Abstract: The present invention comprises a process of mixing a luminous substance in powder form to a transferable grade molding compound in a pelletized or powder form, such as a clear epoxy, to derive a homogeneous mixture that can be pressed and sintered into solid pellets. The solid pellets are further processed so as to permit their deposition on and around a light emitting semiconductor driver so as to obtain a white light emitting semiconductor device. This white light emitting device can be used in a variety of lighting applications.Type: GrantFiled: March 14, 2005Date of Patent: September 18, 2012Assignee: Microsemi CorporationInventor: Stephen G. Kelly
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Patent number: 8197722Abstract: Compositions capable of simultaneous two-photon absorption and higher order absorptivities are provided. Compounds having a donor-pi-donor or acceptor-pi-acceptor structure are of particular interest, where the donor is an electron donating group, acceptor is an electron accepting group, and pi is a pi bridge linking the donor and/or acceptor groups. The pi bridge may additionally be substituted with electron donating or withdrawing groups to alter the absorptive wavelength of the structure. Also disclosed are methods of generating an excited state of such compounds through optical stimulation with light using simultaneous absorption of photons of energies individually insufficient to achieve an excited state of the compound, but capable of doing so upon simultaneous absorption of two or more such photons. Applications employing such methods are also provided, including controlled polymerization achieved through focusing of the light source(s) used.Type: GrantFiled: July 30, 2001Date of Patent: June 12, 2012Assignee: The California Institute of TechnologyInventors: Seth Marder, Joseph Perry
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Patent number: 8197711Abstract: The transparent polycrystalline optoceramic has single grains with a symmetric cubic crystal structure and at least one optically active center. The optoceramic has the following formula: A2+xByDzE7, wherein 0?x?1.1, 0?y?3, 0?z?1.6, and 3x+4y+5z=8, and wherein A is at least one trivalent rare earth cation, B is at least one tetravalent cation, D is at least one pentavalent cation, and E is at least one divalent anion. The method of making the optoceramic includes preparing a powder mixture from starting materials, pre-sintering, sintering and then compressing to form the optoceramic. Scintillator media made from the optoceramic are also described.Type: GrantFiled: January 29, 2010Date of Patent: June 12, 2012Assignee: Schott AGInventors: Ulrich Peuchert, Yvonne Menke
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Patent number: 8177998Abstract: The invention is directed to a liquid scintillating composition containing (i) one or more non-polar organic solvents; (ii) (lithium-6)-containing nanoparticles having a size of up to 10 nm and surface-capped by hydrophobic molecules; and (iii) one or more fluorophores. The invention is also directed to a liquid scintillator containing the above composition.Type: GrantFiled: October 26, 2009Date of Patent: May 15, 2012Assignee: UT-Battelle, LLCInventors: Sheng Dai, Banu Kesanli, John S. Neal
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Patent number: 7985356Abstract: A non-linear optical device comprising a polymer configured to be photorefractive upon irradiation by a green laser. The polymer comprises a repeating unit including a moiety selected from the group consisting of the structures (M-1), (M-2) and (M-3), as defined herein.Type: GrantFiled: July 23, 2007Date of Patent: July 26, 2011Assignee: Nitto Denko CorporationInventors: Michiharu Yamamoto, Peng Wang
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Publication number: 20110095231Abstract: The invention is directed to a liquid scintillating composition containing (i) one or more non-polar organic solvents; (ii) (lithium-6)-containing nanoparticles having a size of up to 10 nm and surface-capped by hydrophobic molecules; and (iii) one or more fluorophores. The invention is also directed to a liquid scintillator containing the above composition.Type: ApplicationFiled: October 26, 2009Publication date: April 28, 2011Applicant: UT-BATTELLE, LLCInventors: Sheng Dai, Banu Kesanli, John S. Neal