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公开(公告)号：US12100488B2
公开(公告)日：2024-09-24
申请号：US16463867
申请日：2017-11-21
Applicant: National Institute for Materials Science
Inventor： Kota Shiba , Ryo Tamura , Gaku Imamura , Genki Yoshikawa
IPC: G16C20/70 , G01N1/00 , G01N1/10 , G01N19/00 , G01N29/02 , G06N20/00 , G16C20/20 , G16C20/50 , G16C20/80 , G16C60/00
CPC classification number: G16C20/70 , G01N1/00 , G01N19/00 , G01N29/022 , G06N20/00 , G16C20/20 , G16C20/50 , G16C20/80 , G01N2001/1087 , G01N2001/1093 , G16C60/00
Abstract: The present invention provides a method and a device for estimating a value to be estimated associated with a specimen, by performing machine learning of a relationship between a value of an estimation object and an output corresponding thereto, based on an output from a chemical sensor with regard to a plurality of specimens for which specific values to be estimated are known, and using the result of the mechanical learning to estimate a specific value to be estimated on the basis of an output from the chemical sensor with regard to a given unknown specimen.
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公开(公告)号：US11879863B2
公开(公告)日：2024-01-23
申请号：US17289394
申请日：2019-11-13
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Kosuke Minami , Genki Yoshikawa
Abstract: The present invention provides a method for analyzing a liquid sample that solves a problem of a kinetically slow equilibrium at a liquid-solid interface, the problem occurring when liquid sample analysis is performed with a chemical sensor. In the method for analyzing a liquid sample according to an embodiment of the present invention, a component to be analyzed in a liquid sample is adsorbed on a receptor layer of a chemical sensor, one or more kinds of gases are then supplied to the chemical sensor, and a response thereof is measured. As a result, since a slow equilibrium at a liquid-solid interface is not used, a high-sensitivity measurement can be performed in a short time, and existing findings regarding analysis of gas samples on which much progress in research has been achieved can be used.
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Patent Agency Ranking
公开(公告)号：US11796408B2
公开(公告)日：2023-10-24
申请号：US17267094
申请日：2019-08-28
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Genki Yoshikawa , Takahiro Nemoto , Makito Nakatsu , Naoto Takeda , Kota Shiba , Kosuke Minami
CPC classification number: G01L1/26 , B08B7/005 , B08B7/0071 , G01L1/2268 , H01L29/84
Abstract: A method for cleaning a receptor layer of a surface stress sensor according to an embodiment of the present invention includes, in a surface stress sensor that detects a change in surface stress of a thin film, the change being caused by a receptor layer disposed on a surface of the thin film, causing at least a part of a surface region of the thin film to generate heat or supplying heat to the receptor layer from the outside of the surface stress sensor. This makes it possible to easily perform efficient cleaning of a surface stress sensor such as a sensor that performs detection using a piezoresistor while avoiding structural complications as much as possible.
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公开(公告)号：US11353437B2
公开(公告)日：2022-06-07
申请号：US16463585
申请日：2017-11-22
Applicant: National Institute for Materials Science
Inventor： Gaku Imamura , Genki Yoshikawa , Takashi Washio
Abstract: Provided is a novel analysis method that enables identification of a sample even when any sample is introduced during measurement carried out by using a chemical sensor. An input in which the amount of an unknown sample changes over time is provided to the chemical sensor, a response which is from the chemical sensor and which changes over time is measured, a sensor function (transmission function) of the chemical sensor with respect to the unknown sample is calculated on the basis of the input and the response, and the unknown sample is identified on the basis of the sensor function of the chemical sensor with respect to the unknown sample.
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公开(公告)号：US11215585B2
公开(公告)日：2022-01-04
申请号：US16613161
申请日：2018-05-21
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Kota Shiba , Kosuke Minami , Genki Yoshikawa
IPC: G01N29/02
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.
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公开(公告)号：US10444133B2
公开(公告)日：2019-10-15
申请号：US15555198
申请日：2016-03-04
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Genki Yoshikawa , Kota Shiba
Abstract: A sample in a gas state to be measured is forced to impinge on a structure in which a change in a characteristic including a mechanical deformation, an optical change, an electric change and a magnetic change is exerted due to the impingement of a gaseous sample, a gasified liquid sample or solid sample to cause at least one of changes in characteristics including a mechanical deformation, an optical change, an electric change and a magnetic change; and the molecular weight of the sample in a gas state is obtained.
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公开(公告)号：US09506822B2
公开(公告)日：2016-11-29
申请号：US14371596
申请日：2013-04-17
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Genki Yoshikawa , Masakazu Aono , Tomonobu Nakayama , Frederic Loizeau , Terunobu Akiyama , Sebastian Gautsch , Peter Vettiger
IPC: G01B7/16 , G01L1/18 , G01N29/02 , G01N29/036
CPC classification number: G01L1/18 , G01L1/183 , G01N29/022 , G01N29/036 , G01N2291/0256 , G01N2291/02827
Abstract: A double-side-coated surface stress sensor includes a sensing membrane structure portion where at least two ends opposite each other are fixed on a mounting portion; a receptor layer that coats both surfaces of the sensing membrane structure portion; and an element detecting a stress, which is provided in the vicinity of at least one of the fixed two ends, opposite each other, of the sensing membrane structure portion or at least one of the fixed two ends, opposite each other, of the mounting portion, in which in a detection output is obtained from the element based on the stress which is applied onto the receptor layer coating both of the surfaces of the sensing membrane structure portion. Accordingly, it is possible to provide a double-side-coated surface stress sensor which coats both surfaces of the sensing membrane structure portion by the receptor layer, thereby obtaining a sufficiently large detection output.
Abstract translation: 双面涂布表面应力传感器包括传感膜结构部分，其中彼此相对的至少两个端部固定在安装部分上; 覆盖感测膜结构部分的两个表面的受体层; 以及检测应力的元件，其设置在感测膜结构部分的彼此相对的固定的两个端部中的至少一个附近，或彼此相对的固定的两个端部中的至少一个 在检测输出中，基于施加到涂覆在感测膜结构部分的两个表面上的受体层上的应力，从元件获得检测输出部分。 因此，可以提供通过受体层涂覆感测膜结构部分的两个表面的双面涂覆的表面应力传感器，从而获得足够大的检测输出。
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