Patents Assigned to National Institute for Materials Science
  • Publication number: 20200365791
    Abstract: Provided is a thermoelectric material having an intermetallic compound in an Al—Fe—Si system as a main component, exhibiting a thermoelectric effect in a temperature range from a room temperature to 600° C., and becoming a p-type or n-type thermoelectric material by a composition control, a manufacturing method thereof, and a thermoelectric power generation module thereof. A thermoelectric material according to the present invention including at least Al, Fe, and Si and represented by a general formula of Al22+p?qFe38.5+3qSi49.5?p?2q (where p satisfies 0?p?16.5 and q satisfies ?0.34?q?0.34) and including a phase represented by Al2Fe3Si3 as a main phase.
    Type: Application
    Filed: August 29, 2018
    Publication date: November 19, 2020
    Applicant: National Institute for Materials Science
    Inventor: Yoshiki Takagiwa
  • Patent number: 10836961
    Abstract: A phosphor-containing member includes a transparent member, and a plurality of granular single crystal phosphors dispersed in the transparent member. Each of the plurality of granular single crystal phosphors includes a YAG crystal as a mother crystal. The plurality of granular single crystal phosphors are prepared by crushing the YAG crystal. The YAG crystal has a composition represented by a formula of Y3-x-yGdxCeyAl5O12-w (0.03?x?0.2, 0.003?y?0.2, ?0.2?w?0.2). Reduction of fluorescence intensity of the phosphors is less than 3% when an excitation light wavelength is 460 nm and a temperature is increased from 25° C. to 100° C.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: November 17, 2020
    Assignees: KOHA CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Makoto Watanabe, Daisuke Inomata, Kazuo Aoki, Kiyoshi Shimamura, Encarnacion Antonia Garcia Villora
  • Publication number: 20200357985
    Abstract: The present invention provides a perpendicularly magnetized film structure exhibiting high interface-induced magnetic anisotropy by utilizing a combination of an alloy comprising Fe as a main component and MgAl2O4 as a basic configuration.
    Type: Application
    Filed: August 29, 2018
    Publication date: November 12, 2020
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroaki SUKEGAWA, Thomas SCHEIKE, Seiji MITANI
  • Patent number: 10830573
    Abstract: The purpose of the present invention is to measure a size of a liquid droplet easily and in a short period of time by combining outputs of multiple types of liquid droplet detectors having different size dependencies of a liquid droplet of detection signals. In one embodiment of the present invention, in the detector having a narrow gap width shown in FIG. 5(a), the electrodes are electrically conducted by the attachment of a small liquid droplet. On the other hand, in the detectors with a wide gap width shown in FIGS. 5(b) and 5(c), the electrodes are not electrically conducted unless a liquid droplet having a larger size is attached. By utilizing this, the size of a liquid droplet is determined. In a case where the liquid droplet is water, as a liquid droplet detector, for example, a detector of a type that detects a galvanic current by a cell formed by the attachment of water between the electrodes made of different kinds of metals may be used.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: November 10, 2020
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jin Kawakita, Toyohiro Chikyo
  • Patent number: 10832719
    Abstract: Disclosed is a perpendicularly magnetized film structure using a highly heat resistant underlayer film on which a cubic or tetragonal perpendicularly magnetized film can grow, comprising a substrate of a cubic single crystal substrate having a (001) plane or a substrate having a cubic oriented film that grows to have the (001) plane; an underlayer formed on the substrate from a thin film of a metal having an hcp structure in which the [0001] direction of the thin metal film forms an angle in the range of 42° to 54° with respect to the <001> direction or the (001) orientation of the substrate; and a perpendicularly magnetized layer located on the metal underlayer and formed from a cubic material selected from a Co-based Heusler alloy and a cobalt-iron (CoFe) alloy having a bcc structure a constituent material, and grown to have the (001) plane.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: November 10, 2020
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroaki Sukegawa, Zhenchao Wen, Seiji Mitani, Koichiro Inomata, Takao Furubayashi, Jason Paul Hadorn, Tadakatsu Ohkubo, Kazuhiro Hono, Jungwoo Koo
  • Patent number: 10822277
    Abstract: The present invention relates to an oxidation-induced highly-functional self-healing ceramic composition, a method for producing the ceramic composition, a use of the ceramic composition and a method for achieving the enhancement of the functionality of the ceramic composition, by focusing on a repairing stage and a remodeling state in a self-healing process and by carrying out elemental and structural designing of an oxidation-induced self-healing ceramic composition for the purpose of speeding up these stages.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: November 3, 2020
    Assignee: National Institute for Materials Science
    Inventors: Toshio Osada, Kiichi Kamoda, Toru Hara, Masanori Mitome, Taichi Abe, Takahito Ohmura, Wataru Nakao
  • Patent number: 10818824
    Abstract: Provided are a light-emitting instrument, and an image display device utilizing an AlON phosphor and having wide color gamut. The light-emitting instrument includes an emission source emitting light having a wavelength from 410 nm to 470 nm and a phosphor or a light-transmitting body where the phosphor is dispersed, and the phosphor includes an inorganic compound where an AlON crystal, an AlON solid solution crystal, or an inorganic crystal having a crystal structure identical to AlON includes at least Mn, an A element (a monovalent metal element) it necessary, a D element (a divalent metal element) if necessary, an E element (a monovalent anion) if necessary, and a G element (one or more elements other than Mn, the A, Al, O, N, the D, or the E) if necessary, and emits fluorescence having a peak wavelength from 515 nm to 541 nm upon irradiation of an excitation source.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 27, 2020
    Assignee: National Institute for Materials Science
    Inventor: Naoto Hirosaki
  • Publication number: 20200271740
    Abstract: Provided is an orientation agent for NMR spectroscopy containing a nanosheet which is easy to prepare, excellent in handleability, economic efficiency and versatility, and is capable of being stably aligned to the magnetic field. The nanosheet is coated with a compound having a molecular weight of 1,500 or more and containing 35 or more functional groups per molecule, said functional groups being composed of at least one selected from a hydroxy group, an amino group, an amide group, a carbonyl group, a carboxyl group, a sulfo group, a phosphate group, an imidazole group and a guanidine group.
    Type: Application
    Filed: May 22, 2018
    Publication date: August 27, 2020
    Applicants: RIKEN, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Noriyuki UCHIDA, Yasuhiro ISHIDA, Kento UENO, Zhifang SUN, Qiaochu LI, Yoshiki YAMAGUCHI, Takayoshi SASAKI, Yasuo EBINA, Takuzo AIDA
  • Patent number: 10749105
    Abstract: To provide a key monocrystalline magnetoresistance element necessary for accomplishing mass production and cost reduction for applying a monocrystalline giant magnetoresistance element using a Heusler alloy to practical devices. A monocrystalline magnetoresistance element of the present invention includes a silicon substrate 11, a base layer 12 having a B2 structure laminated on the silicon substrate 11, a first non-magnetic layer 13 laminated on the base layer 12 having a B2 structure, and a giant magnetoresistance effect layer 17 having at least one laminate layer including a lower ferromagnetic layer 14, an upper ferromagnetic layer 16, and a second non-magnetic layer 15 disposed between the lower ferromagnetic layer 14 and the upper ferromagnetic layer 16.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: August 18, 2020
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jiamin Chen, Yuya Sakuraba, Jun Liu, Hiroaki Sukegawa, Kazuhiro Hono
  • Publication number: 20200249185
    Abstract: The present invention is to provide a small-sized dryness/wetness responsive sensor that detects a galvanic current with a high sensitivity as a principle of operation. According to one embodiment of the present invention, a dryness/wetness responsive sensor comprises a thin wire made of a first metal and a thin wire made of a second metal, the second metal is different from the first metal, the thin wire of the first metal and the thin wire of the second metal are disposed in juxtaposition with each other on an insulating substrate, and a surface state of a part between the thin wire of the first metal and the thin wire of the second metal is hydrophilic or hydrophobic.
    Type: Application
    Filed: August 23, 2018
    Publication date: August 6, 2020
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jin KAWAKITA, Akihiko OHI, Tomoko OHKI, Naoki IKEDA, Toshihide NABATAME, Toyohiro CHIKYO
  • Publication number: 20200249201
    Abstract: The present invention provides a nanomechanical sensor in which a negative influence of water in a sample on measurement is suppressed. In an embodiment of the present invention, as a receptor material of the nanomechanical sensor, a low-hygroscopic material such as polysulfone, polycaprolactone, poly(vinylidene fluoride), or poly(4-methylstyrene) is used. According to this embodiment, a negative influence, such as saturation of a receptor layer by water in the sample, or masking of an output signal based on trace components by an output signal based on water contained in the sample in a large amount, can be suppressed.
    Type: Application
    Filed: May 21, 2018
    Publication date: August 6, 2020
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Kota SHIBA, Kosuke MINAMI, Genki YOSHIKAWA
  • Publication number: 20200238223
    Abstract: Provided is a nanofiltration (NF) or reverse osmosis (RO) membrane made of a hard carbon film that has oil resistance and can efficiently separate not only ions in water but also dye molecules present in an organic solvent, a filtering filter, a two-layer-bonded-type filtering filter, and methods for manufacturing the same, using a nanofiltration (NF) or reverse osmosis (RO) membrane (10) made of a hard carbon film characterized by being made of a hard carbon film, having a thickness (t10) of from 5 nm to 300 nm, and having a maximum pore diameter of less than 0.86 nm.
    Type: Application
    Filed: April 14, 2020
    Publication date: July 30, 2020
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Izumi ICHINOSE, Yoshihisa FUJII, Sadaki SAMITSU
  • Publication number: 20200239992
    Abstract: Disclosed are a highly versatile magnesium alloy that can achieve both formability and strength in a temperature range including room temperature, and a method for manufacturing the magnesium alloy, wherein the obtained magnesium alloy contains 0.2 to 2 wt % of Al, 0.2 to 1 wt % of Mn, 0.2 to 2 wt % of Zn, and at least 0.2 to 1 wt % of Ca, the remainder comprising Mg and unavoidable impurities, and a precipitate comprising Mg, Ca, and Al is dispersed on the (0001) plane of a magnesium matrix.
    Type: Application
    Filed: February 20, 2018
    Publication date: July 30, 2020
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Ming-Zhe Bian, Taisuke Sasaki, Kazuhiro Hono, Byeongchan Suh, Shigeharu Kamado, Taiki Nakata
  • Publication number: 20200220052
    Abstract: As one of purposes, the present invention provides: a single-crystal phosphor which can exhibit excellent properties under high-temperature conditions; and a light-emitting device in which the phosphor is used. As one embodiment, a single-crystal phosphor is provided, which has a chemical composition represented by the compositional formula: Y1-x-y-zLuxGdyCez)3+aAl5-aO12(0?x?0.9994, 0?y?0.0669, 0.0002?z?0.0067,?0.016?a?0.315).
    Type: Application
    Filed: March 17, 2020
    Publication date: July 9, 2020
    Applicants: KOHA CO., LTD., NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Daisuke INOMATA, Kazuo AOKI, Kiyoshi SHIMAMURA, Encarnacion Antonia GARCIA VILLORA
  • Publication number: 20200220161
    Abstract: The present invention provides an electrode that is excellent in conductivity and improves the power density and energy density of a power storage device, a method for manufacturing the same, and a power storage device using the same. The electrode of the present invention is an electrode containing at least a graphene aggregate having a particle diameter of 0.1 ?m or more and less than 100 ?m, wherein the graphene aggregate is an aggregate of graphene basic structures each having graphene layers among which a fibrous material is located. A method for manufacturing the electrode of the present invention comprises a step of mixing the above-mentioned graphene basic structures with at least a lower alcohol having 1 or more and 5 or less carbon atoms to form a graphene aggregate in which the graphene basic structures are aggregated, and a step of forming a film using the graphene aggregate.
    Type: Application
    Filed: August 22, 2018
    Publication date: July 9, 2020
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Jie TANG, Kun ZHANG, Luchang QIN
  • Patent number: 10705165
    Abstract: A magnetic resonance signal detection module includes an insulator block having a coil mounting section including a through hole serving as a detection hole into which a sample container is inserted. A low-frequency coil is provided on an inner surface of the through hole. A high-frequency primary resonator is embedded in the coil mounting section so as to surround the low-frequency coil.
    Type: Grant
    Filed: July 12, 2018
    Date of Patent: July 7, 2020
    Assignees: JEOL Ltd., National Institute for Materials Science
    Inventors: Tadashi Shimizu, Takashi Mizuno, Mitsuru Toda, Takahiro Nemoto, Hideo Shino
  • Publication number: 20200206382
    Abstract: A wound dressing material includes a particle having a crosslinked gelatin derivative, the gelatin derivative having the structure represented by the following formula (1): GltnNH—CHR1R2??(1) wherein “Gltn” represents a gelatin residue, R1 represents an alkyl group having 1-17 carbon atoms, and R2 represents a hydrogen atom or an alkyl group having 1-17 carbon atoms, and the particle having a particle size ranging from 1 to 1,000 ?m.
    Type: Application
    Filed: August 31, 2018
    Publication date: July 2, 2020
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Tetsushi TAGUCHI, Akihiro NISHIGUCHI
  • Patent number: 10700261
    Abstract: A piezoelectric material for a combustion pressure sensor, a method for producing the piezoelectric material, and a combustion pressure sensor using the piezoelectric material are provided. The piezoelectric material of the present invention includes a single crystal containing Ca, Ta, an element M (M is Al or Ga), Si, and O, the single crystal has the same crystal structure as the crystal structure of langasite represented by La3Ga5SiO14, and at least the content of the element M is insufficient for the stoichiometric composition represented by Ca3TaM3Si2O14. Preferably, in a case where the element M is Ga, each content of the Ca and the Si is excessive for the stoichiometric composition, and in a case where the element M is Al, the content of the Ca is excessive for the stoichiometric composition, and the content of the Ta is insufficient for the stoichiometric composition.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: June 30, 2020
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Kiyoshi Shimamura, Encarnacion Antonia Garcia Villora, Isao Sakaguchi, Naoki Ohashi
  • Patent number: 10689741
    Abstract: A method for recycling a Ni-based single crystal superalloy part or unidirectionally solidified superalloy part provided with a thermal barrier coating containing at least a ceramic on a surface of a Ni-based single crystal superalloy substrate or Ni-based unidirectionally solidified superalloy substrate, in which the method including the steps of: melting and desulfurizing a Ni-based single crystal superalloy part or Ni-based unidirectionally solidified superalloy part at a temperature of the melting point or more of the Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy and less than the melting point of the ceramic; heating a casting mold for a recycled Ni-based single crystal superalloy part or casting mold for a recycled Ni-based unidirectionally solidified superalloy part to a temperature of the melting point or more of the Ni-based single crystal superalloy or Ni-based unidirectionally solidified superalloy; pouring the desulfurized melted Ni-based single crystal supe
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: June 23, 2020
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroshi Harada, Kyoko Kawagishi, Toshiharu Kobayashi, Tadaharu Yokokawa, Makoto Osawa, Michinari Yuyama, Shinsuke Suzuki, Yuichiro Joh, Satoshi Utada
  • Publication number: 20200173002
    Abstract: Provided is Mg-based alloy wrought material having improved ductility, formality, and resistance against fracture. Intermetallic compounds may be formed by mutual bonding of added elements to be a fracture origin. While maintaining microstructure for activating non-basal dislocation movement of Mg-based alloy wrought material, added elements to create no fracture origin, but to promote grain boundary sliding were found from among inexpensive and versatile elements. Provided is Mg-based alloy wrought material including at least one element from Zr, Bi, and Sn and at least one element from Al, Zn, Ca, Li, Y, and Gd wherein remainder comprises Mg and unavoidable impurities; an average grain size in a parent phase is 20 ?m or smaller; a value of (?max??bk)/?max (maximum load stress (?max), breaking stress (?bk)) in a stress-strain curve obtained by tension-compression tests of the wrought material is 0.2 or higher; and resistance against breakage shows 100 kJ or higher.
    Type: Application
    Filed: July 13, 2018
    Publication date: June 4, 2020
    Applicant: National Institute for Materials Science
    Inventors: Hidetoshi Somekawa, Yoshiaki Osawa