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1.发明申请公开(公告)号：US20180017515A1
公开(公告)日：2018-01-18
申请号：US15552949
申请日：2016-02-25
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Kota SHIBA , Genki YOSHIKAWA , Gaku IMAMURA
CPC classification number: G01N27/125 , B82Y15/00 , G01N3/00 , G01N5/02 , G01N9/002 , G01N11/16 , G01N21/00 , G01N27/128 , G01N29/022 , G01N29/036 , G01N2291/0255 , G01N2291/0256 , G01N2291/0257 , G01N2291/02827 , G01N2291/0427
Abstract: As a receptor layer, a film of a composite material of a base material such as a polymer and particles that adsorb an analyte is used. When the present invention is applied to a surface stress sensor or the like, the Young's modulus of the receptor layer, which significantly affects detection sensitivity, can be preset with a high degree of freedom, by independently selecting particles that adsorb a desired analyte and a base material that disperses said particles therein.
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2.发明申请公开(公告)号：US20210199563A1
公开(公告)日：2021-07-01
申请号：US17057747
申请日：2019-06-04
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Kosuke MINAMI , Gaku IMAMURA , Kota SHIBA , Genki YOSHIKAWA
Abstract: In an analysis of a fluid component using a nanomechanical sensor covered with a receptor, the same receptor is caused to express different response characteristics. In a measuring system of analyzing a response when a sample gas and a purge gas are supplied to a nanomechanical sensor while switching the sample gas and the purge gas, a gas (external gas) different from both gases is mixed into a gas channel and supplied to the sensor for measurement. Since a response characteristic of a receptor is modulated by mixing of the external gas, the object described above is achieved.
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公开(公告)号：US20190391122A1
公开(公告)日：2019-12-26
申请号：US16488866
申请日：2018-02-16
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Gaku IMAMURA , Genki YOSHIKAWA , Takashi WASHIO
IPC: G01N33/00
Abstract: Provided is a novel analysis method which, when a chemical sensor is used to perform a measurement, makes it possible to identify a sample without controlling or monitoring a change in the time the sample is introduced. According to the present invention, a sample can be identified without knowing a change in the time the sample is introduced, by using a chemical sensor having a plurality of channels each having different characteristics to perform a measurement, and performing an analysis on the basis of responses obtained from each channel.
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公开(公告)号：US20180356388A1
公开(公告)日：2018-12-13
申请号：US15781924
申请日：2016-11-14
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Kota SHIBA , Genki YOSHIKAWA , Gaku IMAMURA
Abstract: Provided is a sensor which enables detection/identification of various types of fuels for automobiles by using simple devices. According to the present invention, high-octane gas, regular gas, diesel oil, heating oil, gasoline laced with heating oil, and the like can be clearly identified without using a large-scale analysis such as gas chromatography or mass spectroscopy by using a sensor having a structure in which a surface of a sensor body which detects a surface stress or the like is coated with particles modified with a hydrocarbon group such as an alkyl group.
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公开(公告)号：US20230273183A1
公开(公告)日：2023-08-31
申请号：US18015792
申请日：2021-07-12
Applicant: National Institute for Materials Science
Inventor： Ryoh NAKAKUBO , Mitsuyoshi ISHIDA , Genki YOSHIKAWA , Kosuke MINAMI , Gaku IMAMURA , Hideki MATSUZAKA , Takahiro NEMOTO
IPC: G01N33/487
CPC classification number: G01N33/487
Abstract: An object of the present invention is to make it possible to easily determine a presence or absence of ketosis and/or the possibility of ketosis in an animal on site or the like. Another object of the present invention is to provide an apparatus for performing the determination. A method for determining ketosis according to one embodiment of the present invention includes providing gas detection means with a gas generated from a body fluid collected from an animal (except for humans), and determining ketosis of the animal based on a composition of the gas generated from the body fluid using a response of the gas detection means to the gas generated from the body fluid.
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Patent Agency Ranking
公开(公告)号：US20190323982A1
公开(公告)日：2019-10-24
申请号：US16342268
申请日：2017-10-24
Inventor： Genki YOSHIKAWA , Kota SHIBA , Gaku IMAMURA , Takanori YASUDA , Kyohei KOBAYASHI , Hisashi SAKAI
Abstract: The invention provides: a gas sensor device that is capable of removing a component adsorbed on a gas sensor by relatively simple means and easily restoring a signal baseline of the gas sensor to a constant state; and a method for removing a gas component. The gas sensor device according to an embodiment of the invention includes a gas sensor and cleaning means that contains a liquid for cleaning the gas sensor. The gas sensor includes a sensor main body that is capable of detecting a characteristic parameter of a component present in a gas phase or a liquid phase, and a sensitive membrane that is coated on a surface of the sensor main body and is durable against the liquid.
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公开(公告)号：US20180003604A1
公开(公告)日：2018-01-04
申请号：US15543298
申请日：2015-08-31
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Kota SHIBA , Genki YOSHIKAWA , Yusuke YAMAUCHI , Norihiro SUZUKI , Gaku IMAMURA , Kosuke MINAMI , Hamish Hei-Man YEUNG
CPC classification number: G01N5/02 , B82Y15/00 , G01G3/13 , G01N21/49 , G01N27/227 , G01N29/022 , G01N29/036 , G01N2021/495 , G01N2291/014 , G01N2291/021 , G01N2291/022 , G01N2291/02433 , G01N2291/0256
Abstract: According to improvement of the receptor layer of various sensors of the type for detecting physical parameters (for example, a surface stress sensor, QCM, and SPR), all of high sensitivity, selectivity, and durability are achieved simultaneously. A porous material or a particulate material, e.g., nanoparticles, is used in place of a uniform membrane which has been conventionally used as a receptor layer. Accordingly, the sensitivity can be controlled by changing the membrane thickness of the receptor layer, the selectivity can be controlled by changing a surface modifying group to be fixed on the porous material or particulate material, and the durability can be controlled by changing the composition and surface properties of the porous material or particulate material.
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公开(公告)号：US20230147626A1
公开(公告)日：2023-05-11
申请号：US17914956
申请日：2021-03-19
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Ryo NAKAKUBO , Mitsuyoshi ISHIDA , Masanori TOHNO , Hisami KOBAYASHI , Genki YOSHIKAWA , Kosuke MINAMI , Gaku IMAMURA , Hideki MATSUZAKA , Takahiro NEMOTO
IPC: G01N33/00
CPC classification number: G01N33/0047
Abstract: An object of the present invention is to make it possible to easily evaluate silage fermentation quality on site or the like. In one embodiment of the present invention, a gas generated from silage is applied to a surface stress sensor, and the amount of either one of organic acids and nitrogen-containing compounds contained in the silage is determined. The surface stress sensor can detect trace components in a gas by a simple device configuration and in simple procedures. Therefore, by utilizing the fact that relationship between the content of these components and the fermentation quality is known, the evaluation of fermentation quality can be easily realized by the above measurement.
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公开(公告)号：US20220291185A1
公开(公告)日：2022-09-15
申请号：US17619024
申请日：2020-05-08
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Gaku IMAMURA , Kosuke MINAMI , Kota SHIBA , Genki YOSHIKAWA
IPC: G01N33/00 , G01N29/02 , G01L1/18 , G01N5/02 , C08F222/06
Abstract: An object of the present invention is to detect ammonia with high sensitivity and high selectivity using a nanomechanical sensor with a structure that is as simple as possible. A method for detecting ammonia according to an embodiment of the present invention comprises supplying a sample gas possibly containing ammonia to a nanomechanical sensor that detects a stress or a displacement using poly(methyl vinyl ether-alt-maleic anhydride) as a material of a receptor layer, and detecting presence or absence of ammonia or a content of ammonia in the sample gas based on an output signal from the nanomechanical sensor, in which the sample gas is a humidified sample gas with controlled relative humidity.
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公开(公告)号：US20220057372A1
公开(公告)日：2022-02-24
申请号：US17434911
申请日：2020-02-14
Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
Inventor： Taro YAKABE , Gaku IMAMURA , Genki YOSHIKAWA , Akiko NAKAMURA
Abstract: The present invention provides a hydrogen sensor having a high sensitivity and low hysteresis characteristics while having a simple configuration and low cost. The present invention shows that a membrane-type surface stress sensor having an amorphous palladium-copper-silicon alloy as a sensitive film has low hysteresis and can detect a nitrogen gas to which hydrogen at a very low concentration of 0.25 ppm is added and a pure nitrogen gas with a sufficiently high S/N ratio.
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