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公开(公告)号：US20230333023A1
公开(公告)日：2023-10-19
申请号：US18026190
申请日：2021-09-13
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Tadaaki NAGAO , Duc Thien NGO , Ryo TAMURA , Tung Anh DOAN
Abstract: Provided is to perform an identification of a temperature and/or a material of a target object to be measured in a non-contact and simple manner. A relationship between a wavelength and an emissivity of thermal radiation such as infrared rays radiated from an object is determined by the material of the object. In the present invention, the identification is performed by using this. In other words, the object above can be achieved by comparing thermal radiation intensities at a plurality of wavelengths from the given object with a database in the present invention. The database is stored by measuring the thermal radiation intensities at the plurality of wavelengths and temperatures for a plurality of materials in advance. An external light source is not required, and the target to be measured itself is used as a thermal radiation light source in this measurement.
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Patent Agency Ranking
公开(公告)号：US20210243858A1
公开(公告)日：2021-08-05
申请号：US17052563
申请日：2019-05-24
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Tadaaki NAGAO , Tung Anh DOAN , Duy Thang DAO , Satoshi ISHII
Abstract: Provided is a radiation light source that enables adjustment of infrared radiation to a significantly narrow band. A plasmonic reflector layer consisting of a plasmonic material, a resonator layer consisting of an insulator, and a partially reflecting layer are alternately laminated in this order to form a multi-layered radiation light source, wherein the partially reflecting layer are selected from any one of a free interface, an ultrathin-film metallic layer, and a distributed reflector layer having a structure in which layers having different refractive indexes are alternately laminated. When a material with high-temperature resistance such as SiC is used in the outermost layer of the distributed reflector layer, the multi-layered radiation light source can operate at high temperatures of 550° C. and higher.
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公开(公告)号：US20170346006A1
公开(公告)日：2017-11-30
申请号：US15536150
申请日：2016-01-13
Applicant: National Institute for Materials Science
Inventor： Toshihide NABATAME , Tadaaki NAGAO
CPC classification number: H01L45/146 , C23C16/40 , H01L27/105 , H01L27/2436 , H01L27/2481 , H01L45/00 , H01L45/1233 , H01L45/1616 , H01L49/00
Abstract: The forming voltage of a resistance change element used in a non-volatile memory and the like is decreased, and repetition characteristics are improved. In an element structure in which a metal oxide film 12 is sandwiched between a lower electrode 11 and an upper electrode 14, an island/particle-like region of amorphous aluminum oxide or aluminum oxycarbide 13 is formed on the metal oxide film 12. Because an oxide deficiency, serving as the nucleus of a filament for implementing an on/off operation of the resistance change element, is formed from the beginning under the island- or particle-like aluminum oxide or the like, the conventional creation of an oxide deficiency by high-voltage application in the initial period of forming can be eliminated. Such a region can be fabricated using a small number of cycles of an ALD process.
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公开(公告)号：US20220271211A1
公开(公告)日：2022-08-25
申请号：US17631147
申请日：2020-07-30
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Tadaaki NAGAO , Duy Thang DAO
Abstract: A photothermal converter using a wavelength selective perfect absorber made of a low-loss metal material or dielectric and a heat detection sensor are combined to develop a sensor that efficiently converts light of a specific wavelength into heat and further electrically detects the heat. Here, since the wavelength selective perfect absorber of the present invention has a periodic structure, it has high directivity, and can also be used as a small motion sensor or a watching sensor using detection of thermal radiation. In addition, it can also be used as a high-precision small position sensor by being combined with a laser light source matching the resonance wavelength of the sensor.
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公开(公告)号：US20200292910A1
公开(公告)日：2020-09-17
申请号：US16809787
申请日：2020-03-05
Inventor： Yosuke SUZUKI , Tadaaki NAGAO , Akio WATANABE
Abstract: An optical deflector includes; a light transmitting portion through which a light passes; and a pair of electrodes arranged to oppose to each other with the light transmitting portion interposed therebetween. The light transmitting portion is a transparent ion conductor made of a single crystal or polycrystal. The pair of electrodes apply a predetermined voltage to the light transmitting portion to move ions inside the transparent ion conductor so as to change a traveling direction of the light passing through the light transmitting portion.
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公开(公告)号：US20200048548A1
公开(公告)日：2020-02-13
申请号：US16486017
申请日：2018-03-01
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Tadaaki NAGAO , Karuna Kar NANDA
Abstract: The present invention has for its object to provide a composition in which a photoluminescent carbon nanoparticle having no dependency of an emission wavelength on an excitation wavelength and being enhanced in terms of quantum efficiency is dispersed, a process of producing the same, and an application of the same. The composition of the invention has a photoluminescent carbon nanoparticle dispersed in a water-soluble solvent. The photoluminescent carbon nanoparticle contains a carbon atom, an oxygen atom, a nitrogen atom, and a hydrogen atom if required. As shown in FIG. 6, the photoluminescent carbon nanoparticle has an intensity of a C—N bond and/or C—O bond-derived peak (285.98 eV) larger than that of a C—C bond and/or C—H bond-derived peak (284.95 eV) in terms of X-ray photoelectron spectroscopic spectra, and a Raman spectrum having a peak based on a G-band and a D-band.
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