公开(公告)号：US20210214230A1

公开(公告)日：2021-07-15

申请号：US17044069

申请日：2018-05-01

Applicant: NEC CORPORATION

Inventor： Mayumi KOSAKA

IPC: C01B32/18 ,  C09C1/44 ,  H01B1/04

Abstract: The purpose of the present invention is to provide a carbon mixture having high electrical conductivity. A carbon mixture according to the present invention is characterized by including a fibrous carbon nanohorn aggregate having a length of 1 μm or more in an amount of 20 wt % or more.

公开(公告)号：US20230384163A1

公开(公告)日：2023-11-30

申请号：US18201551

申请日：2023-05-24

Applicant: NEC Corporation

Inventor： Mayumi KOSAKA

IPC: G01J5/08 ,  G01J5/02 ,  G01J5/04

CPC classification number: G01J5/0853 ,  G01J5/023 ,  G01J5/046

Abstract: One object of the present invention is to provide a bolometer with improved TCR. The present invention relates to a bolometer including two electrodes provided on a substrate and a bolometer film lying between the two electrodes to connect the two electrodes, wherein the bolometer film includes p-type semiconducting carbon nanotubes, and contact sites of the two electrodes with the bolometer film each consist only of a monometal or alloy having higher work function than the p-type semiconducting carbon nanotubes, or the proportion of a monometal or alloy having lower work function than the p-type semiconducting carbon nanotubes in metals constituting the contact sites of the two electrodes with the bolometer film is 10% by mass or less, or the contact area of a monometal or alloy having lower work function than the p-type semiconducting carbon nanotubes with the bolometer film is 10% or less of the total contact area between the electrodes and the bolometer film.

公开(公告)号：US20250067601A1

公开(公告)日：2025-02-27

申请号：US18791534

申请日：2024-08-01

Applicant: NEC Corporation

Inventor： Mayumi KOSAKA

IPC: G01J5/20 ,  H10N15/10

Abstract: A bolometer includes a base material that has a stacking surface, two electrodes each of which has a main surface and a side surface extending from the main surface to the stacking surface, and a film that contains carbon nanotubes, in which the film includes a first portion that is stacked on the main surface, a second portion that is stacked on the stacking surface between the two electrodes, and a connection portion that connects the first portion and the second portion and provided on the side surface, and in which an average film thickness of the second portion is less than 10 nm.

公开(公告)号：US20220364928A1

公开(公告)日：2022-11-17

申请号：US17731435

申请日：2022-04-28

Applicant: NEC Corporation

Inventor： Mayumi KOSAKA

IPC: G01J5/061 ,  G01J5/22 ,  G01J5/02 ,  G01J5/04

Abstract: An object of the present invention is to provide a bolometer having a high TCR value and a low resistance, and a method for manufacturing the same.
According to the present invention, a bolometer manufacturing method including: fabricating an interlayer having a function that enhances binding between a substrate and a carbon nanotube, in a predetermined shape on the substrate; and, making a semiconducting carbon nanotube dispersion liquid move on the interlayer in one direction relative to the fabricated interlayer is provided.

公开(公告)号：US20200316525A1

公开(公告)日：2020-10-08

申请号：US16753495

申请日：2017-10-10

Applicant: NEC CORPORATION

Inventor： Mayumi KOSAKA

IPC: B01D57/02 ,  C01B32/172

Abstract: A nanocarbon separation device includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a plurality of electrode tubes that extend in the separation tank in a height direction of the separation tank. The second electrode is disposed at a lower end of the electrode tubes.

公开(公告)号：US20240002990A1

公开(公告)日：2024-01-04

申请号：US18248112

申请日：2021-07-20

Applicant: Japan Aviation Electronics Industry, Ltd. ,  NEC Corporation

Inventor： Kazuomi SATO ,  Kazuhiro TOKUNAGA ,  Yasuhiro YUZURIHARA ,  Mayumi KOSAKA ,  Ryota YUGE

IPC: C23C2/04

CPC classification number: C23C2/04

Abstract: An object of the present invention is to provide a structure, a sliding member and a connector, having a surface (sliding surface) that is excellent in abrasion resistance and can keep contact resistance low for a long period, and a method for producing the structure. The object is attained by a structure having a configuration where a nanocarbon material is disposed on an at least partial surface of a metal, a sliding member and a connector, having the configuration, and a method for producing the structure. In the structure, it is preferred that a coating containing the nanocarbon material and an organic compound having at least a first functional group having affinity for the metal and a second functional group having affinity for the nanocarbon material should be disposed on the at least partial surface of the metal.

公开(公告)号：US20220364933A1

公开(公告)日：2022-11-17

申请号：US17731808

申请日：2022-04-28

Applicant: NEC Corporation

Inventor： Mayumi KOSAKA

IPC: G01J5/22

Abstract: An object of the present invention is to provide a bolometer having a high TCR value and a low resistance, and a method for manufacturing the same.
The present invention relates to a bolometer manufacturing method including: fabricating a set of two carbon nanotube wires that are approximately parallel to each other at edges of a line shape, or fabricating a circular shape carbon nanotube wire at a circular circumference of a circular shape, by applying a semiconducting carbon nanotube dispersion liquid in the line shape or the circular shape on a substrate, and drying the dispersion liquid, a width of each wire being 5 μm or more; and connecting a part of each wire to a first electrode and a second electrode.

公开(公告)号：US20200283296A1

公开(公告)日：2020-09-10

申请号：US16754597

申请日：2017-10-10

Applicant: NEC CORPORATION

Inventor： Kazuki IHARA ,  Mayumi KOSAKA ,  Ryota YUGE ,  Hideaki NUMATA ,  Fumiyuki NIHEY

IPC: C01B32/172 ,  B01D47/00

Abstract: A nanocarbon separation device includes a separation tank which is configured to accommodate a dispersion liquid including a nanocarbon, a first electrode that is provided at an upper part in the separation tank, a second electrode that is provided at a lower part in the separation tank, and a partition member that is provided between the first electrode and the second electrode in the separation tank, and the partition member partitions the separation tank into a plurality of regions.

公开(公告)号：US20200261848A1

公开(公告)日：2020-08-20

申请号：US16754642

申请日：2018-10-03

Applicant: NEC CORPORATION

Inventor： Mayumi KOSAKA

IPC: B01D57/02 ,  C01B32/172 ,  C01B32/174

Abstract: A nanocarbon separation device includes a first porous structure configured to hold a solution containing a surfactant, a second porous structure configured to hold a dispersion medium, a holding part provided between the first porous structure and the second porous structure and configured to hold the dispersion liquid containing the nanocarbons and the surfactant and having a smaller content of the surfactant than that of the solution, a separation tank in which the first porous structure, the holding part and the second porous structure are disposed and accommodated in an order of the first porous structure, the holding part and the second porous structure, a first electrode provided on a lower section of the first porous structure, and a second electrode provided on an upper section of the second porous structure.

公开(公告)号：US20240361184A1

公开(公告)日：2024-10-31

申请号：US18632519

申请日：2024-04-11

Applicant: NEC Corporation

Inventor： Mayumi KOSAKA

IPC: G01J5/20 ,  B82Y30/00

CPC classification number: G01J5/20 ,  B82Y30/00

Abstract: A bolometer includes a first electrode including a plurality of first extending portions having a plurality of first inner surfaces arranged in an arrangement direction, each of the first inner surfaces extending in an extension direction intersecting the arrangement direction, a second electrode facing the first electrode while being separated from the first electrode in the extension direction, and a sensor including a sensor film and a connection portion, in which the first electrode, the sensor film, and the second electrode are arranged in order in the extension direction, the connection portion extends in the extension direction, is provided between the plurality of first inner surfaces, and electrically connects the plurality of first inner surfaces and the sensor film, and the sensor includes carbon nanotubes.