Patents by Inventor Noriaki Arai
Noriaki Arai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240034688Abstract: Provided herein are methods for making a freeze-cast material having a internal structure, the methods comprising steps of: determining the internal structure of the material, the internal structure having a plurality of pores, wherein: each of the plurality of pores has directionality; and the step of determining comprises: selecting a temperature gradient and a freezing front velocity to obtain the determined internal structure based on the selected temperature gradient and the selected freezing front velocity; directionally freezing a liquid formulation to form a frozen solid, the step of directionally freezing comprising: controlling the temperature gradient and the freezing front velocity to match the selected temperature gradient and the selected freezing front velocity during directionally freezing; wherein the liquid formulation comprises at least one solvent and at least one dispersed species; and subliming the at least one solvent out of the frozen solid to form the material.Type: ApplicationFiled: July 31, 2023Publication date: February 1, 2024Applicant: California Institute of TechnologyInventors: Katherine T. FABER, Julia A. KORNFIELD, Noriaki ARAI, Orland BATEMAN, Rustem F. ISMAGILOV
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Publication number: 20230317401Abstract: The current stability of a field emission electron source and a Schottky electron source where a {100} plane of a hexaboride single crystal is used as an electron emission surface is improved. The electron source includes a tip of a hexaboride single crystal with a <100> axis, in which a top facet of a {100} plane that is surrounded by side facets including at least four {n11} planes and at least four {n10} planes where n represents an integer of 1, 2, or 3 is formed at a front end of the tip of the hexaboride single crystal, and a total area of the side facets of the {n11} planes is more than a total area of the side facets of the {n10} planes.Type: ApplicationFiled: September 23, 2020Publication date: October 5, 2023Inventors: Toshiaki KUSUNOKI, Noriaki ARAI, Tomihiro HASHIZUME, Keigo KASUYA
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Patent number: 11760698Abstract: Provided herein are methods for making a freeze-cast material having a internal structure, the methods comprising steps of: determining the internal structure of the material, the internal structure having a plurality of pores, wherein: each of the plurality of pores has directionality; and the step of determining comprises: selecting a temperature gradient and a freezing front velocity to obtain the determined internal structure based on the selected temperature gradient and the selected freezing front velocity; directionally freezing a liquid formulation to form a frozen solid, the step of directionally freezing comprising: controlling the temperature gradient and the freezing front velocity to match the selected temperature gradient and the selected freezing front velocity during directionally freezing; wherein the liquid formulation comprises at least one solvent and at least one dispersed species; and subliming the at least one solvent out of the frozen solid to form the material.Type: GrantFiled: December 23, 2021Date of Patent: September 19, 2023Assignee: California Institute of TechnologyInventors: Katherine T. Faber, Julia A. Kornfield, Noriaki Arai, Orland Bateman, Rustem F. Ismagilov
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Publication number: 20230178325Abstract: An electron gun 901 capable of suppressing an uneven temperature distribution at an extraction electrode and a length-measuring SEM 900 are provided. The electron gun 901 is equipped with: a charged particle source 1; an extraction electrode 3 for extracting charged particles from the charged particle source 1 and allowing some of the charged particles to pass while blocking some other charged particles; and an auxiliary structure 5 disposed in contact with the extraction electrode 3. The length-measuring SEM 900 is equipped with the electron gun 901 and a computer system 920 for controlling the electron gun 901.Type: ApplicationFiled: April 23, 2020Publication date: June 8, 2023Inventors: Masahiro FUKUTA, Keigo KASUYA, Noriaki ARAI
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Publication number: 20220415603Abstract: In a Schottky emitter or a thermal field emitter using a hexaboride single crystal, side emission from portions other than an electron emission portion is reduced. An electron source according to the invention includes: a protrusion (40) configured to emit an electron when an electric field is generated; a shank (41) that supports the protrusion (40) and has a diameter decreasing toward the protrusion (40); and a body (42) that supports the shank (41), in which the protrusion (40), the shank (41), and the body (42) are each made of a hexaboride single crystal, and a part including the shank (41) and the body (42) excluding the protrusion (40) is covered with a material having a work function higher than that of the hexaboride single crystal.Type: ApplicationFiled: December 24, 2019Publication date: December 29, 2022Inventors: Toshiaki KUSUNOKI, Tomihiro HASHIZUME, Noriaki ARAI, Keigo KASUYA
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Publication number: 20220234962Abstract: Provided herein are methods for making a freeze-cast material having a internal structure, the methods comprising steps of: determining the internal structure of the material, the internal structure having a plurality of pores, wherein: each of the plurality of pores has directionality; and the step of determining comprises: selecting a temperature gradient and a freezing front velocity to obtain the determined internal structure based on the selected temperature gradient and the selected freezing front velocity; directionally freezing a liquid formulation to form a frozen solid, the step of directionally freezing comprising: controlling the temperature gradient and the freezing front velocity to match the selected temperature gradient and the selected freezing front velocity during directionally freezing; wherein the liquid formulation comprises at least one solvent and at least one dispersed species; and subliming the at least one solvent out of the frozen solid to form the material.Type: ApplicationFiled: December 23, 2021Publication date: July 28, 2022Applicant: Califomia Institute of TechnologyInventors: Katherine T. Faber, Julia A. Kornfield, Noriaki Arai, Orland Bateman, Rustem F. Ismagilov
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Publication number: 20220234007Abstract: A composite, method of making the composite, and method of using the composite are disclosed. The composite comprises a macroporous scaffold comprising pores; and a polymer matrix positioned within the pores; wherein the polymer matrix comprises: a functional polymer particle; and a structural polymer. The method of using can comprise applications such as chromatography, catalysis, and sensing, among others.Type: ApplicationFiled: December 21, 2021Publication date: July 28, 2022Inventors: Julia A. KORNFIELD, Katherine T. FABER, Mamadou DIALLO, Orland BATEMAN, Noriaki ARAI
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Patent number: 11322329Abstract: The invention provides an electron source including a columnar chip of a hexaboride single crystal, a metal pipe that holds the columnar chip of the hexaboride single crystal, and a filament connected to the metal pipe at a central portion. The columnar chip of the hexaboride single crystal is formed into a cone shape at a portion closer to a tip than a portion held in the metal pipe, and a tip end portion having the cone shape has a (310) crystal face. Schottky electrons are emitted from the (310) crystal face. According to the invention, it is possible to provide a novel electron source having monochromaticity, long-term stability of an emitter current, and high current density.Type: GrantFiled: August 27, 2018Date of Patent: May 3, 2022Assignee: HITACHI HIGH-TECH CORPORATIONInventors: Toshiaki Kusunoki, Tomihiro Hashizume, Keigo Kasuya, Noriaki Arai, Hiromitsu Seino, Minoru Kaneda, Takashi Ohshima, Soichiro Matsunaga
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Patent number: 11242290Abstract: Provided herein are methods for making a freeze-cast material having a internal structure, the methods comprising steps of: determining the internal structure of the material, the internal structure having a plurality of pores, wherein: each of the plurality of pores has directionality; and the step of determining comprises: selecting a temperature gradient and a freezing front velocity to obtain the determined internal structure based on the selected temperature gradient and the selected freezing front velocity; directionally freezing a liquid formulation to form a frozen solid, the step of directionally freezing comprising: controlling the temperature gradient and the freezing front velocity to match the selected temperature gradient and the selected freezing front velocity during directionally freezing; wherein the liquid formulation comprises at least one solvent and at least one dispersed species; and subliming the at least one solvent out of the frozen solid to form the material.Type: GrantFiled: August 23, 2019Date of Patent: February 8, 2022Assignee: California Institute of TechnologyInventors: Katherine T. Faber, Julia A. Kornfield, Noriaki Arai, Orland Bateman, Rustem F. Ismagilov
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Publication number: 20210327674Abstract: The invention provides an electron source including a columnar chip of a hexaboride single crystal, a metal pipe that holds the columnar chip of the hexaboride single crystal, and a filament connected to the metal pipe at a central portion. The columnar chip of the hexaboride single crystal is formed into a cone shape at a portion closer to a tip than a portion held in the metal pipe, and a tip end portion having the cone shape has a (310) crystal face. Schottky electrons are emitted from the (310) crystal face. According to the invention, it is possible to provide a novel electron source having monochromaticity, long-term stability of an emitter current, and high current density.Type: ApplicationFiled: August 27, 2018Publication date: October 21, 2021Inventors: Toshiaki KUSUNOKI, Tomihiro HASHIZUME, Keigo KASUYA, Noriaki ARAI, Hiromitsu SEINO, Minoru KANEDA, Takashi OHSHIMA, Soichiro MATSUNAGA
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Patent number: 10996216Abstract: The present invention relates to a method for applying a principle of Deterministic Lateral Displacement (DLD), and for separating cells depending on the particle sizes on the basis of the DLD principle after capturing targeted cells or untargeted cells on a carrier and thereby increasing particle sizes.Type: GrantFiled: February 26, 2016Date of Patent: May 4, 2021Assignee: TOPPAN PRINTING CO., LTD.Inventor: Noriaki Arai
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Patent number: 10707046Abstract: An electron source that can be used stably for a long time even when hexaboride is used, and an electron beam device using the electron source are provided. The invention is directed to an electron source which includes a filament made of a metal, a metal tube that is fixed to the filament and has a plurality of recesses disposed at least in two axial directions so as to surround a central axis at an outer periphery, and a columnar hexaboride tip that emits an electron, is disposed so as to protrude from the inside of the metal tube to a side opposite to the filament, and is in contact with a bottom of each of the plurality of recesses of the metal tube.Type: GrantFiled: December 8, 2017Date of Patent: July 7, 2020Assignee: Hitachi High-Tech CorporationInventors: Toshiaki Kusunoki, Keigo Kasuya, Takashi Ohshima, Tomihiro Hashizume, Noriaki Arai, Yoichi Ose
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Publication number: 20200115291Abstract: Provided herein are methods for making a freeze-cast material having a internal structure, the methods comprising steps of: determining the internal structure of the material, the internal structure having a plurality of pores, wherein: each of the plurality of pores has directionality; and the step of determining comprises: selecting a temperature gradient and a freezing front velocity to obtain the determined internal structure based on the selected temperature gradient and the selected freezing front velocity; directionally freezing a liquid formulation to form a frozen solid, the step of directionally freezing comprising: controlling the temperature gradient and the freezing front velocity to match the selected temperature gradient and the selected freezing front velocity during directionally freezing; wherein the liquid formulation comprises at least one solvent and at least one dispersed species; and subliming the at least one solvent out of the frozen solid to form the material.Type: ApplicationFiled: August 23, 2019Publication date: April 16, 2020Inventors: Katherine T. FABER, Julia A. KORNFIELD, Noriaki ARAI, Orland BATEMAN, Rustem F. ISMAGILOV
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Patent number: 10586674Abstract: In order to provide a stable hexaboride single-crystal field emission electron source capable of heat-flashing, this field emission electron source is provided with a metal filament, a metal tube joined thereto, a hexaboride tip that emits electrons, and graphite sheets that are independent of the metal tube and the hexaboride tip. The hexaboride tip is arranged so as not to be in structural contact with the metal tube due to the graphite sheets. The hexaboride tip, the graphite sheets, and the metal tube are configured so as to be mechanically and electrically in contact with one another.Type: GrantFiled: November 24, 2016Date of Patent: March 10, 2020Assignee: Hitachi High-Technologies CorporationInventors: Toshiaki Kusunoki, Tomihiro Hashizume, Keigo Kasuya, Takashi Ohshima, Yusuke Sakai, Yoichi Ose, Noriaki Arai
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Patent number: 10522319Abstract: An electron beam apparatus which can stably achieve high spatial resolution also during low acceleration observation using CeB6 for the CFE electron source is provided. In an electron beam apparatus having a CFE electron source, the emitter of the electron beam of the CFE electron source is Ce hexaboride or a hexaboride of a lanthanoid metal heavier than Ce, the hexaboride emits the electron beam from the {310} plane, and the number of the atoms of the lanthanoid metal on the {310} plane is larger than the number of boron molecules comprising six boron atoms on the {310} plane.Type: GrantFiled: October 13, 2016Date of Patent: December 31, 2019Assignee: Hitachi High-Technologies CorporationInventors: Keigo Kasuya, Noriaki Arai, Toshiaki Kusunoki, Takashi Ohshima, Tomihiro Hashizume, Yusuke Sakai
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Publication number: 20190385809Abstract: An electron source that can be used stably for a long time even when hexaboride is used, and an electron beam device using the electron source are provided. The invention is directed to an electron source which includes a filament made of a metal, a metal tube that is fixed to the filament and has a plurality of recesses disposed at least in two axial directions so as to surround a central axis at an outer periphery, and a columnar hexaboride tip that emits an electron, is disposed so as to protrude from the inside of the metal tube to a side opposite to the filament, and is in contact with a bottom of each of the plurality of recesses of the metal tube.Type: ApplicationFiled: December 8, 2017Publication date: December 19, 2019Inventors: Toshiaki KUSUNOKI, Keigo KASUYA, Takashi OHSHIMA, Tomihiro HASHIZUME, Noriaki ARAI, Yoichi OSE
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Publication number: 20190237289Abstract: An electron beam apparatus which can stably achieve high spatial resolution also during low acceleration observation using CeB6 for the CFE electron source is provided. In an electron beam apparatus having a CFE electron source, the emitter of the electron beam of the CFE electron source is Ce hexaboride or a hexaboride of a lanthanoid metal heavier than Ce, the hexaboride emits the electron beam from the {310} plane, and the number of the atoms of the lanthanoid metal on the {310} plane is larger than the number of boron molecules comprising six boron atoms on the {310} plane.Type: ApplicationFiled: October 13, 2016Publication date: August 1, 2019Inventors: Keigo KASUYA, Noriaki ARAI, Toshiaki KUSUNOKI, Takashi OHSHIMA, Tomihiro HASHIZUME, Yusuke SAKAI
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Publication number: 20190126278Abstract: A method of replacing a liquid medium including feeding in a flow direction a plurality of liquids including a first liquid medium having a target particle dispersed therein and a second liquid medium such that a laminar flow is formed, and that the laminar flow has laminar flow segments including a first laminar flow segment formed by the first liquid medium and a second laminar flow segment formed by the second liquid medium, applying an external force to the laminar flow such that the target particle is moved from the first laminar flow segment to the second laminar flow segment, and recovering a laminar flow fraction including the target particle from the second laminar flow segment from a recovery surface which is perpendicular to the flow direction and separated from a cross section of the first laminar flow segment.Type: ApplicationFiled: December 19, 2018Publication date: May 2, 2019Applicant: TOPPAN PRINTING CO., LTD.Inventor: Noriaki ARAI
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Publication number: 20190085385Abstract: A method of detecting a target molecule including binding, to first target molecules, specific binding substances which are capable of recognizing different epitopes and labeled with nucleic acid fragments, respectively, detecting the specific binding substances based on fluorescence signals of different fluorescence wavelengths from the nucleic acid fragments, and detecting the first target molecules based on the fluorescence signals that correspond to the specific binding substances, respectively.Type: ApplicationFiled: November 19, 2018Publication date: March 21, 2019Applicant: TOPPAN PRINTING CO., LTD.Inventors: Yoichi Makino, Takumi Hirase, Noriaki Arai, Hiroyuki Noji
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Publication number: 20190066966Abstract: In order to provide a stable hexaboride single-crystal field emission electron source capable of heat-flashing, this field emission electron source is provided with a metal filament, a metal tube joined thereto, a hexaboride tip that emits electrons, and graphite sheets that are independent of the metal tube and the hexaboride tip. The hexaboride tip is arranged so as not to be in structural contact with the metal tube due to the graphite sheets. The hexaboride tip, the graphite sheets, and the metal tube are configured so as to be mechanically and electrically in contact with one another.Type: ApplicationFiled: November 24, 2016Publication date: February 28, 2019Inventors: Toshiaki KUSUNOKI, Tomihiro HASHIZUME, Keigo KASUYA, Takashi OHSHIMA, Yusuke SAKAI, Yoichi OSE, Noriaki ARAI