Inorganic Luminescent Compositions With Organic Nonluminescent Material Patents (Class 252/301.36)
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Publication number: 20120104320Abstract: Luminescent paints and methods of making luminescent paints are provided. In some examples, the luminescent paints may include urethane resin and luminescent substance. The luminescent paints may also include a variety of day time, UV stable colors, thereby providing the luminescent paints with long lasting and vibrant day time colors. Also, the luminescent paints may be bio-friendly in nature and may include low levels of hazardous air pollutants (HAPs) or no HAPs at all.Type: ApplicationFiled: March 30, 2010Publication date: May 3, 2012Inventor: David Postma
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Publication number: 20120104319Abstract: Luminescent paints and methods of making luminescent paints are provided. In some examples, the luminescent paints may include epoxy resin and luminescent substance. The luminescent paints may also include a variety of day time, UV stable colors.Type: ApplicationFiled: March 30, 2010Publication date: May 3, 2012Inventor: David Postma
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Publication number: 20120104325Abstract: Disclosed herein is an isolable colloidal particle comprising a nanoparticle and an inorganic capping agent bound to the surface of the nanoparticle, a solution of the same, a method for making the same from a biphasic solvent mixture, and the formation of structures and solids from the isolable colloidal particle. The process can yield photovoltaic cells, piezoelectric crystals, thermoelectric layers, optoelectronic layers, light emitting diodes, ferroelectric layers, thin film transistors, floating gate memory devices, imaging devices, phase change layers, and sensor devices.Type: ApplicationFiled: April 23, 2010Publication date: May 3, 2012Applicant: THE UNIVERSITY OF CHICAGOInventors: Dmitri V. Talapin, Maksym V. Kovalenko, Jong-Soo Lee, Chengyang Jiang
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Patent number: 8163201Abstract: Disclosed are photoluminescent formulations, comprising an effective amount of photoluminescent phosphorescent materials, which exhibit high luminous intensity and persistence. Also disclosed are photoluminescent objects formed by applying at least one photoluminescent layer, formed from photoluminescent formulations, to preformed articles. Further disclosed are methods for creating photoluminescent objects.Type: GrantFiled: December 20, 2005Date of Patent: April 24, 2012Assignee: Performance Indicator, LLCInventors: Satish Agrawal, Edward Kingsley
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Publication number: 20120091607Abstract: Escape route marking for an aircraft comprising photoluminescent pigments in a carrier material, which luminesce in the dark, the carrier material comprising silicone and the photoluminescent pigments having a mean particle size of less than 150 ?m.Type: ApplicationFiled: December 22, 2011Publication date: April 19, 2012Applicant: LUFTHANSA TECHNIK AGInventor: Wolfgang Sutter
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Patent number: 8153022Abstract: A semiconductor phosphor nanoparticle including nanoparticle core made of a group 13-group 15 semiconductor; a shell layer coating the semiconductor nanoparticle core; and a metal-containing modified organic compound and a modified organic compound binding to a surface of the shell layer is disclosed.Type: GrantFiled: July 12, 2010Date of Patent: April 10, 2012Assignee: Sharp Kabushiki KaishaInventor: Tatsuya Ryowa
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Publication number: 20120080646Abstract: A photoluminescent or electroluminescent system and method of making a non-luminescent nanostructured material into such a luminescent system is presented. The method of preparing the luminescent system, generally, comprises the steps of modifying the surface of a nanostructured material to create isolated regions to act as luminescent centers and to create a charge imbalance on the surface; applying more than one polar molecule to the charged surface of the nanostructured material; and orienting the polar molecules to compensate for the charge imbalance on the surface of the nanostructured material. The compensation of the surface charge imbalance by the polar molecules allows the isolated regions to exhibit luminescence.Type: ApplicationFiled: September 30, 2010Publication date: April 5, 2012Inventors: Ilia N. Ivanov, Alexander A. Puretzky, Bin Zhao, David B. Geohegan, David J. Styers-Barnett, Hui Hu
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Patent number: 8147713Abstract: A method and composition for scale removal and leak detection is disclosed. The composition comprises a scale-removal agent and a fluorescing agent.Type: GrantFiled: June 30, 2006Date of Patent: April 3, 2012Assignee: PPG Industries Ohio, Inc.Inventors: Jeffrey A. Greene, Ronald A. Koehler
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Patent number: 8147714Abstract: Fluorescent organic nanoparticles and a process for producing fluorescent organic nanoparticles having a size of less than about 500 nanometers comprising a polymeric matrix comprising one or more crosslinked polymer resins, and comprising one or more fluorescent dyes incorporated into the polymer matrix.Type: GrantFiled: October 6, 2008Date of Patent: April 3, 2012Assignee: Xerox CorporationInventors: Gabriel Iftime, Daryl W. Vanbesien, Jordan H. Wosnick, Shigang S. Qiu, Kelly Zhou, Valerie M. Farrugia
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Publication number: 20120076992Abstract: A process for incorporating light emitting materials into aircraft interiors is described. The method includes selecting at least one light emitting material, incorporating the selected at least one light emitting material into one or more of a laminate coating and an extruded component, and installing the one or more of a laminate coating and extruded component into an aircraft cabin configuration.Type: ApplicationFiled: December 1, 2011Publication date: March 29, 2012Inventor: John N. Harris
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Publication number: 20120077280Abstract: Nanofibers modified to alter their optical properties in the infrared part of the electromagnetic spectrum, which nanofibers can be used in applications ranging from identification technology to energy conversion devices (e.g., thermophotovoltaics) to stealth technology. The desired optical properties can be obtained by modifying the fibers with rare earth and other materials and then can be incorporated into garments or other composite structures or can be applied as coatings on solid surfaces, to be used in a number of applications that benefit from selective emission properties.Type: ApplicationFiled: August 31, 2011Publication date: March 29, 2012Inventors: George G. Chase, Edward A. Evans, Rex D. Ramsier, Darrell H. Reneker, Daniel J. Smith
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Publication number: 20120068219Abstract: Microencapsulated particles having improved resistance to moisture and extended release capabilities are produced by microencapsulating the particles in a film-forming, cross-linked, hydrolyzed polymer.Type: ApplicationFiled: August 19, 2011Publication date: March 22, 2012Inventor: Robert G. Bayless
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Publication number: 20120068118Abstract: Matrixes doped with semiconductor nanocrystals are provided. In certain embodiments, the semiconductor nanocrystals have a size and composition such that they absorb or emit light at particular wavelengths. The nanocrystals can comprise ligands that allow for mixing with various matrix materials, including polymers, such that a minimal portion of light is scattered by the matrixes. The matrixes can also be utilized in refractive index matching applications. In other embodiments, semiconductor nanocrystals are embedded within matrixes to form a nanocrystal density gradient, thereby creating an effective refractive index gradient. The matrixes can also be used as filters and antireflective coatings on optical devices and as down-converting layers. Processes for producing matrixes comprising semiconductor nanocrystals are also provided.Type: ApplicationFiled: October 20, 2011Publication date: March 22, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: J. Wallace Parce, Paul Bernatis, Robert Dubrow, William P. Freeman, Joel Gamoras, Shihai Kan, Andreas Meisel, Baixin Qian, Jeffery A. Whiteford, Jonathan Ziebarth
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Publication number: 20120056131Abstract: The use of glow-in-the-dark materials, such as phosphors or long-persistent glow materials which incorporate the use of rare earth elements (i.e. “glow materials”); wherein the glow crystal sizes are 0.5 mm to 10.0 mm in size and to be contained or placed in various forms such as solutions, polymer matrixes both rigid and non-rigid, containers, or flexible vacuum pouches or combinations of same wherein the concentration and size of such glow particles create a light source not heretofore achieved by prior art.Type: ApplicationFiled: August 30, 2011Publication date: March 8, 2012Inventor: Stephen Roy Nagel
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Patent number: 8128838Abstract: In one embodiment of the invention, a marine article of the invention includes a phosphorescent phosphor. A particularly advantageous phosphorescent phosphor comprises MAl2O4. As used herein, “M” is at least one cation selected from a group consisting of calcium, strontium, and barium. The phosphor comprises 0.001% to 10% of a europium activator, and 0.001% to 10% of at least one dopant selected from the group consisting of lanthanum, cerium, praseodymium, neodymium, samarium, gadolinium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, tin and bismuth as a co-activator, in terms of mol % relative to the metal element expressed by M. The phosphorescent marine article has an afterglow corresponding to a luminance of at least 0.3 mCd/m2 for at least 420 minutes.Type: GrantFiled: February 6, 2008Date of Patent: March 6, 2012Assignee: GloTek Corp.Inventor: John R. Goedel
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Publication number: 20120052127Abstract: Disclosed are an expanded polystyrene particle having a skin layer with superior moldability, a method for preparing the same, and an expanded polystyrene molded article using the same. Provided is an expanded polystyrene particle provided on the surface thereof with a skin layer with superior moldability wherein the skin layer contains a binder selected from the group consisting of a thermoplastic resin-based adhesive, a thermosetting resin-based adhesive, an inorganic adhesive, a protein-based adhesive and a mixture thereof, wherein the skin layer further contains methylene diphenyl diisocyanate.Type: ApplicationFiled: April 16, 2010Publication date: March 1, 2012Applicant: POLMA CO., LTD.Inventors: Bong-Kuk Park, Dong-Hyun Kim
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Publication number: 20120045398Abstract: The present invention relates to the manufacture of triblock polymer ligands (30) and nanoparticle complexes (80). The nanoparticle complexes (80) comprise a capped nanoparticle (10) and the triblock polymer ligand (30). The triblock polymer ligand (30) consists of a binding polymer (40), a hydrophobic polymer (50) and a hydrophilic functionalisable polymer (60). The binding polymer (40) attaches to the capped nanoparticle (10).Type: ApplicationFiled: September 2, 2011Publication date: February 23, 2012Inventors: Elmar Pöselt, Steffen Fischer, Stephan Förster, Horst Weller
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Publication number: 20120037850Abstract: A surface-modified silicate luminophore includes a silicate luminophore and a coating includes at least one of (a) a fluorinated coating including a fluorinated inorganic agent, a fluorinated organic agent, or a combination of fluorinated inorganic and organic agents, the fluorinated coating generating hydrophobic surface sites and (b) a combination of the fluorinated coating and at least one moisture barrier layer. The moisture barrier layer includes MgO, Al2O3, Y2O3, La2O3, Gd2O3, Lu2O3, and SiO2 or the corresponding precursors, and the coating is disposed on the surface of the silicate luminophore.Type: ApplicationFiled: July 15, 2011Publication date: February 16, 2012Applicants: LITEC-LP GMBH, SEOUL SEMICONDUCTOR CO., LTD.Inventors: Chung Hoon LEE, Walter TEWS, Gundula ROTH, Detlef STARICK
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Publication number: 20120032116Abstract: A method for producing a diamond material by contacting a fluorinated precursor with a hydrocarbon in a reactor and forming a combination in the absence of a metal catalyst; increasing the pressure of the reactor to a first pressure; heating the combination under pressure to form a material precursor; cooling the material precursor; and forming a diamond material.Type: ApplicationFiled: August 5, 2011Publication date: February 9, 2012Applicant: UNIVERSITY OF HOUSTON SYSTEMInventors: Valery N. KHABASHESKU, Valery A. DAVYDOV, Alexandra V. RAKHMANINA
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Publication number: 20120028039Abstract: The invention relates to a molded part and to a process for producing such molded part with a surface structure. In particular, the invention relates to a transparent molded part comprising a sheet-like substrate and, provided on a major surface of said substrate, a layer having a layer thickness within a range of from 3 to 300 ?m and consisting of a solvent-free polymerized composition containing: a) from 35 to 75% by weight of at least one partially fluorinated acrylate; b) from 24.9 to 60% by weight of at least one non-fluorinated acrylate; and c) from 0.1 to 5% by weight of at least one photoinitiator; wherein said layer has a surface structure with diffractive surface elements having a maximum structural size of defects of such surface elements of up to 100 nm on the surface facing away from the substrate, characterized in that said composition contains luminescent pigments.Type: ApplicationFiled: March 9, 2010Publication date: February 2, 2012Applicant: NANOGATE INDUSTRIAL SOLUTIONS GMBHInventor: Martin Klenke
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Publication number: 20120027930Abstract: Disclosed are photoluminescent formulations, comprising an effective amount of photoluminescent phosphorescent materials, which exhibit high luminous intensity and persistence. Also disclosed are photoluminescent objects formed by applying at least one photoluminescent layer, formed from photoluminescent formulations, to preformed articles. Further disclosed are methods for creating photoluminescent objects.Type: ApplicationFiled: August 5, 2011Publication date: February 2, 2012Applicant: Performance Indicator, LLCInventors: Satish Agrawal, Edward Kingsley
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Publication number: 20120018716Abstract: An emissive semi-interpenetrating polymer network (E-semi-IPN) includes a semi-interpenetrating polymer network and an emissive material interlaced in the polymer network. The semi-interpenetrating polymer network includes in a crosslinked state one or more of a polymerized organic monomer and a polymerized organic oligomer, polymerized water soluble polymerizable agent, and one or more polymerized polyfunctional cross-linking agents. The E-semi-IPN may be employed as an E-semi-IPN layer (16, 36, 56) in organic light emitting devices (10, 20, 30, 40).Type: ApplicationFiled: July 31, 2009Publication date: January 26, 2012Inventors: Lihua Zhao, Zhang-Lin Zhou, James A. Brug, Sity Lam, Gary Gibson
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Publication number: 20120012791Abstract: The present invention relates to the synthesis of luminophores and of reflective alumina for optimizing the emissive properties of a fluorescent layer.Type: ApplicationFiled: March 18, 2010Publication date: January 19, 2012Applicant: BAIKOWSKIInventor: Lionel Bonneau
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Patent number: 8092713Abstract: The invention concerns a method for marking a material characterized in that it consists in incorporating into the material: either a phosphor capable of producing, following excitation, two light emissions whereof the respective wavelengths and the emission decay times are different, or several phosphors capable of producing, following excitation, a light emission whereof the wavelength and the emission decay time are different from the wavelength and emission decay time of the other or other phosphors. The material can in particular be of the paper, board, paint, textile, ink, glass or macromolecular material type.Type: GrantFiled: July 11, 2005Date of Patent: January 10, 2012Assignee: Rhodia ChimieInventors: Thierry Le-Mercier, Claude Ceintrey
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Publication number: 20120001214Abstract: A phosphor ceramic includes at least one fluorescent layer that is capable of emitting fluorescent light; and at least one non-fluorescent layer that does not emit fluorescent light and is laminated onto the fluorescent layer.Type: ApplicationFiled: June 23, 2011Publication date: January 5, 2012Applicant: NITTO DENKO CORPORATIONInventors: Yasunari OOYABU, Toshitaka NAKAMURA, Hironaka FUJII, Hisataka ITO
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Publication number: 20120001217Abstract: A composition for manufacture of a light emitting particle-polymer composite, the composition including a light emitting particle, a first monomer including at least two thiol groups, each located at a terminal end of the first monomer, and a second monomer including at least two unsaturated carbon-carbon bonds, each located at a terminal end of the second monomer.Type: ApplicationFiled: July 1, 2011Publication date: January 5, 2012Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Hyun A. KANG, Eun Joo JANG, Young Hwan KIM, Shin Ae JUN, Hyo Sook JANG
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Publication number: 20120001406Abstract: Methods for illuminating (backlighting) an emblem on a steering wheel cover or other indicia within a vehicle include the use of a material that is self-illuminated without electricity. This can involve using self-luminous microspheres or phosphorescent additive materials. Such materials will not be illuminated during the daylight, but when night falls (or other periods of relative darkness), they will illuminate the emblem or other indicia. These materials may be added directly to the plastic that is used to make the emblem.Type: ApplicationFiled: February 9, 2009Publication date: January 5, 2012Inventors: Donald J. Paxton, Nadeem Bokhari, Raimund Nebel
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Publication number: 20110316032Abstract: A phosphor layer is composed of a resin in which phosphor particles and light scattering particles are dispersed.Type: ApplicationFiled: June 23, 2011Publication date: December 29, 2011Applicant: NITTO DENKO CORPORATIONInventors: Yasunari OOYABU, Satoshi Sato, Yuki SHINBORI, Shinya OTA, Hisataka ITO
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Publication number: 20110303852Abstract: A scintillator device includes a polymeric polymer matrix, a neutron sensing particulate material dispersed within the polymer matrix, and a scintillating particulate material dispersed within the polymer matrix. In an embodiment, the neutron sensing particulate material has an average characteristic length of not greater than about 3 microns. The scintillating particulate material has an average characteristic length of at least about 16 microns. In another embodiment, a ratio of the average characteristic length of the scintillating particulate material to the average characteristic length of the neutron sensing particulate material is at least about 55. In a further embodiment, an energy deposited in the scintillating particulate material by a positively charged particle is at least about 1.25 MeV.Type: ApplicationFiled: June 14, 2011Publication date: December 15, 2011Applicant: SAINT-GOBAIN CERAMICS & PLASTICS, INC.Inventor: Peter R. Menge
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Publication number: 20110305005Abstract: Phosphor particles of generally spherical shape have an average particle diameter of 5-50 ?m and an average roundness of up to 0.3. The phosphor includes a garnet phase having formula: (A1-xBx)3C5O12 wherein A is Y, Gd, or Lu, B is Ce, Nd, or Tb, C is Al or Ga, and 0.002?x?0.2.Type: ApplicationFiled: June 9, 2011Publication date: December 15, 2011Applicant: SHIN-ETSU CHEMICAL CO., LTD.Inventors: Toshihiko Tsukatani, Kazuhiro Wataya
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Patent number: 8075801Abstract: The present invention provides methods and systems for moveable pieces of equipment comprising a passively charged photoluminescent material to improve visibility of the equipment in low light conditions. This moveable piece of equipment may be a piece of ground support equipment such as that used in support of an operation. Further, these operations may include, for example, nautical operations (e.g., Naval operations or ocean-going cargo transportation), construction of a structure (e.g., building construction), aviation (i.e., flight) operations (e.g., in support of an airport), transportation of goods (e.g., via rail or truck), drilling operations (e.g., drilling for oil, water, gas or explosives), mining operations, oil processing (refinery) operations etc.Type: GrantFiled: April 27, 2006Date of Patent: December 13, 2011Assignee: Defense Holdings, Inc.Inventor: Joseph Bachir Jones
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Patent number: 8078420Abstract: A method and apparatus for authenticating items having a security mark containing a DNA fragment to prevent fraud uses a Raman spectrometer to generate a response spectrum from monochrome incident beam on the security mark on an item. Gross fluorescence is removed from the security mark response spectrum to produce a Raman security mark response spectrum. Peaks in the Raman security mark response spectrum are detected to generate Raman security mark peak data. The Raman security mark peak data is compared to a Raman peak library to determine if there is a match. The item is indicated as being authentic if a match of the Raman security mark peak data is found in the Raman peak library.Type: GrantFiled: October 22, 2007Date of Patent: December 13, 2011Inventor: Gary L. Miller
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Patent number: 8076410Abstract: An embodiment of the invention is luminescent silicon nanoparticle polymer composite that can serve as a wavelength converter or a UV absorber. The composite includes a polymer or an organosilicon compound; and within the polymer or organosilicon compound, a dispersion of luminescent silicon nanoparticles. In a preferred composite, the silicon nanoparticles have multiple Si—H termination sites, the silicon nanoparticles being linked to a C site to produce a silicon carbide bond (Si—C). In a preferred embodiment, the polymer comprises polyurethane. A composite of the invention can perform wavelength conversion. In a wavelength converted film of the invention, the silicon nanoparticles are incorporated into the polymer or organosilicon compound in a quantity sufficient for wavelength conversion but small enough to have no or an insubstantial effect on the properties of the polymer or the organosilicon compound. A white LED of the invention includes a light emitting diode having a narrow band wavelength output.Type: GrantFiled: September 30, 2008Date of Patent: December 13, 2011Assignee: Nanosi Advanced Technologies, Inc.Inventors: Munir H. Nayfeh, Salman A. H. Alrokayan
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Publication number: 20110278503Abstract: The invention relates to an amphiphilic polymer (A) comprising repeat units of the general formulae (I), (II) and (III): or salts thereof, wherein the repeat unit of general formula (I) is comprised in the amphiphilic polymer with a number of m units, the repeat unit of general formula (II) is comprised in the amphiphilic polymer with a number of o units and repeat unit of general formula (III) is comprised in the amphiphilic polymer with a number of p units, wherein each of m, o and p is an independently selected integer from about 3 to about 400 and wherein the sum of m+o+p is selected in the range from about 10 to about 10000, R1 in repeat units (I)-(III) is H or methyl, R2 in repeat unit (II) is an aliphatic moiety with a main chain of about 3 to about 30 carbon atoms and 0 to about 3 heteroatoms selected from the group N, O, S, Se and Si, and, R3 in repeat unit (III) is one of (i) an alicyclic moiety with a main chain of about 5 to about 80 carbon atoms and 0 to about 30 heteroatoms selected from the groType: ApplicationFiled: October 12, 2009Publication date: November 17, 2011Applicant: Agency for Science,Technology and ResearchInventors: Dominik Janczewski, Nikodem Tomczak, Ming-Yong Han, G. Julius Vancso
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Publication number: 20110277216Abstract: There is provided a fiber material whose production is effected by contacting a fiber substrate with an operative composition. The fiber substrate includes optically active particulate materials supported on a support material. The operative composition comprises 0.1% to 10% cross-linking agent, 0.1% to 5.0% polyolefin, 0.1% to 5.0% wetting agent, 0.0% to 8.0% aminofunctional silicone, 0.0% to 6.0% ionizing agent, 0.0% to 2.0% catalyst, and includes a pH of between 2.0 and 4.0. Textile materials including the above-described fiber material are also provided.Type: ApplicationFiled: May 13, 2010Publication date: November 17, 2011Inventor: Alan Norman Higgins
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Patent number: 8052892Abstract: Polyfluorene polymers and copolymers having substantial amounts (10-100%) of fluorenes coupled at the 2 and 5 positions of fluorene are useful as active layers in OLED devices where triplet energies >2.10 eV are required.Type: GrantFiled: October 14, 2008Date of Patent: November 8, 2011Assignee: General Electric CompanyInventors: James Anthony Cella, Joseph John Shiang, Elliott West Shanklin, Paul Michael Smigelski, Jr.
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Publication number: 20110266457Abstract: System for providing an enhanced night vision of an object such as the refuelling device (21, 41) used in an aerial refueling operation between a tanker aircraft (11) and a receptor aircraft (13) so that it becomes capable to be observed at night from an observation place such as the receptor aircraft (13), comprising: laser based infrared illumination means (31) for illuminating said object located in the tanker aircraft (11) when said object is said refuelling device (21, 41); one or several portions of said object coated with one or more coatings (51) containing each of them in different concentrations of lanthanide-doped crystals suitable to up convert radiation emitted by a laser infrared light into visible luminescence. The invention also refers to said coating (51) and to methods for producing said coating (51).Type: ApplicationFiled: November 17, 2010Publication date: November 3, 2011Applicant: EADS CONSTRUCCIONES AERONAUTICAS, S.A.Inventor: Alberto Adarve Lozano
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Patent number: 8048338Abstract: To provide a phosphor having a broad emission spectrum in a range of blue color (in a peak wavelength range from 400 nm to 500 nm), having a broad flat excitation band in a near ultraviolet/ultraviolet range, and having excellent emission efficiency and emission intensity/luminance. The phosphor is given as a general composition formula expressed by MmAaBbOoNn:Z, (where element M is the element having bivalent valency, element A is the element having tervalent valency, element B is the element having tetravalent valency, O is oxygen, N is nitrogen, and element Z is more than one kind of element acting as an activator), satisfying 5.0<(a+b)/m<9.0, 0?a/m?2.0, 0?o?n, n=2/3m+a+4/3b?2/3o, and has an emission spectrum with a maximum peak in the wavelength range from 400 nm to 500 nm under an excitation of the light in a wavelength range from 250 nm to 430 nm.Type: GrantFiled: March 30, 2006Date of Patent: November 1, 2011Assignees: Dowa Electronics Materials Co., Ltd., Mitsubishi Chemical CorporationInventors: Akira Nagatomi, Kenji Sakane
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Publication number: 20110260111Abstract: Embodiments of the present disclosure provide: methods of making a quantum dot, quantum dots, and the like.Type: ApplicationFiled: September 3, 2009Publication date: October 27, 2011Inventors: Shuming Nie, Andrew M. Smith, Brad A. Kairdolf
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Patent number: 8034259Abstract: The ionic conjugates include an inorganic particle electrostatically associated with a macromolecule which can interact specifically with predetermined chemical species or biological targets.Type: GrantFiled: December 19, 2008Date of Patent: October 11, 2011Assignee: Massachusetts Institute of TechnologyInventors: George P. Anderson, Hedi Mattoussi, J. Matthew Mauro, Moungi G. Bawendi, Vikram C. Sundar
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Publication number: 20110240120Abstract: The present invention relates to a luminescent photovoltaic generator (1) and a waveguide for use in such a photovoltaic generator. The photovoltaic generator comprises a photovoltaic cell (4) and a waveguide comprising a transparent matrix (2) having particles of an inorganic luminescent material dispersed therein and/or an inorganic luminescent material disposed at least one side thereof (6). The waveguide is associated with the photovoltaic cell (4), such that, in use, at least some of the light emitted from the luminescent material passes into the photovoltaic cell (4) to generate a voltage in the cell. In preferred embodiments, the inorganic luminescent material is a line emitter and the emission is due to a forbidden electronic transition within the material. The inorganic luminescent material may be selected from an inorganic phosphor, an inorganic fluorescent material and quantum dots, quantum rods and quantum core/shell systems.Type: ApplicationFiled: December 7, 2009Publication date: October 6, 2011Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.Inventors: Cornelis Reinder M. Ronda, Dirk Kornelis Gerhardus De Boer
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Publication number: 20110244003Abstract: The present invention discloses a self standing network or scaffold of nanoparticles with controllably variable mesh size between 500 nm and 1 mm having particle volume fraction between 0.5 to 50%. The network comprises nanoparticles, a surfactant capable of forming ordered structured phases and a cross linking agent, wherein the surfactant is washed off leaving the self standing scaffold. The invention further discloses the process for preparing the self standing scaffolds and uses thereof.Type: ApplicationFiled: December 15, 2009Publication date: October 6, 2011Applicant: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCHInventors: Guruswamy Kumaraswamy, Kamendra Prakash Sharma
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Publication number: 20110240922Abstract: A method of preparing a semiconductor nanocrystal including a core or a core and a shell. The method includes contacting (A) a Group II precursor bound with phosphine, a Group III precursor bound with phosphine, or a mixture thereof, and (B) a Group V compound, a Group VI compound, or a mixture thereof, to provide the core or the core and the shell of the semiconductor nanocrystal.Type: ApplicationFiled: November 15, 2010Publication date: October 6, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Shin-Ae JUN, Eun-Joo JANG, Hyo-Sook JANG, Mi-Jeong SONG
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Patent number: 8030784Abstract: Semiconductor nanoparticles having high luminescence properties that are preferable for applications and uses of biotechnology are provided. With the use of electric charges on the surfaces of particles, the particles and selected polymers are allowed to electrostatically bind to each other, such that the surfaces of the particles are coated. The polymers are allowed to crosslink to each other, resulting in the improved durability of the particles. Further, functional groups contained in the polymers are exposed on the surfaces of the particles. Accordingly, semiconductor nanoparticles that are preferably utilized for applications such as staining and labeling of biopolymers have been synthesized.Type: GrantFiled: December 1, 2006Date of Patent: October 4, 2011Assignee: Hitachi Solutions, Ltd.Inventors: Keiichi Sato, Shinya Hattori, Taeko Chiba
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Publication number: 20110232752Abstract: Luminescent compositions are described comprising lanthanide-containing nanoclusters comprising lanthanide atoms bonded to at least one semimetal or transition metal via an oxygen or sulfur atom. Novel compositions include an antenna ligand complexed with the nanoclusters. The rare earth-metal nanoclusters are in the size range of 1 to 100 nm. Articles, such as solar cells, are described in which the nanoclusters (with or without antenna ligands) are dispersed in a polymer matrix. Novel methods of making luminescent films are also described.Type: ApplicationFiled: August 19, 2009Publication date: September 29, 2011Applicants: BATTELLE MEMORIAL INSTITUTE, BATTELLE-JAPAN CORPORATIONInventors: Hiroshi Mataki, Steven M. Risser, Vincent McGinniss, David W. Nippa, Paul Edwards Burrows, Asanga B. Padmaperuma, Sambhu N. Kundu
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Patent number: 8025816Abstract: This invention provides a novel phosphor material that has better brightness than conventional phosphors using dispersed rare earth ions, and that possesses excellent light resistance, temporal stability, and the like, and a light-emitting device with high brightness comprising such phosphor material and an excitation ultraviolet light source corresponding to the properties thereof. A phosphor comprising a silicon-containing solid matrix and semiconductor superfine particles dispersed therein at a concentration of 5×10?4 to 1×10?2 mol/L, said semiconductor superfine particles having a fluorescence quantum yield of 3% or greater and a diameter of 1.5 to 5 nm, and a light-emitting device including said phosphor and a light source for excitation light with an intensity of 3 to 800 W/cm2.Type: GrantFiled: May 6, 2003Date of Patent: September 27, 2011Assignee: National Institute of Advanced Industrial Science and TechnologyInventors: Norio Murase, Masanori Ando
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Publication number: 20110226996Abstract: Luminescent paints and methods of making luminescent paints are provided. In some examples, the luminescent paints may include urethane resin and luminescent substance. The luminescent paints may also include a variety of day time, UV stable colors and a flex agent that facilitates dependable application of the luminescent paint to flexible objects.Type: ApplicationFiled: November 24, 2009Publication date: September 22, 2011Inventor: David Postma
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Publication number: 20110226995Abstract: This disclosure provides novel ways to modify/functionalize, including crosslink, ligands in the surface coating or molecules in other coatings on a nanoparticle, by using radical addition reactions to add a reactant group onto a ligand/molecule of a nanoparticle. Examples include using a functionalized benzophenone that can be attached or crosslinked to a ligand in the surface coating of a nanocrystal by photochemically-initiated radical addition.Type: ApplicationFiled: October 2, 2009Publication date: September 22, 2011Applicant: Life Technologies CorporationInventors: Eric Tulsky, Wenxi Huang, James Goodwin, Weiwen Zhao
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Publication number: 20110220844Abstract: A nanoparticle having one or more phosphonates or phosphinate ligands on their surface can be converted into nanoparticles with sulfonate ligands on their surface, by contacting the phosphonate-containing nanoparticles with a silylsulfonate reagent. Such nanoparticles are activated toward reactions with nucleophilic groups; thus the method provides activated nanoparticles, and methods of making and using them to produce modified nanoparticles.Type: ApplicationFiled: October 2, 2009Publication date: September 15, 2011Inventors: Eric Tulsky, Eric Welch, Bruce Branchaud, John Mauro, Imad Naasani
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Publication number: 20110210282Abstract: Novel dispersions of nanoparticles such as carbon nanotubes, carbon nanofibers, boron nanotubes, clay nanotubes, other nanotube species, buckminster fullerenes, graphene, graphene nanoplatelets, elements, oxides, nanoparticles, nanoclusters, nanopowders, nanocrystals, nanoscale molecules, other nanoscale materials, as well as products produced therefrom are described. These dispersions can then be further processed into a wide variety of products including but not limited to composite materials, polymers, resins, epoxies, emulsions, cements, coatings, clays, films, membranes, paper, fibers, inks, paints, pastes, electronics, spintronics, optics, biotechnology materials, electrodes, field emission or other displays, plating, capacitance, ceramics, catalysts, clays, ballistic materials, drug delivery, doping, magnetics, dielectrics, barrier layers, selective ion flow membranes, batteries, fuel cells, solar and other applications.Type: ApplicationFiled: February 18, 2011Publication date: September 1, 2011Inventor: Mike Foley