Search Results 1-20 of 277

  • Fabrication of liquid-core fiber-optic structure for large-area CO<sub>2</sub> sensing using ionic liquids

    OHKURA Miku , TAKANA Hidemasa , OHUCHI Fumio S. , FURUKAWA Rei

    … absorption properties, the optical properties of 1-ethyl-3-methylimidazolium acetate ([emim][Ac]) and 1-butyl-3-methylimidazolium acetate ([bmim][Ac]) have been investigated with the aim of assessing their suitability for use in a CO<sub>2</sub> … sensor with a liquid-core fiber-optic structure. …

    Journal of Fluid Science and Technology 16(1), JFST0004-JFST0004, 2021

    J-STAGE 

  • Volatile Gas Sensing through Terahertz Pipe Waveguide

    游 博文 , Ja-Yu LU , Borwen YOU , Jiun-You WANG , Sheng-Syong JHUO , Tun-Yao HUNG , Ching-Ping YU

    … Gas sensing to recognize volatile liquids is successfully conducted through pipe-guided　terahertz (THz) radiation in a reflective and label-free manner. … The investigation found that the　sensitivity of the pipe-waveguide sensing scheme is dependent on the vapor absorption strength,　which is strongly related to the molecular amount and properties including the dipole moment and mass of a gas molecule. …

    Sensors 20(21), 6268-6268, 2020-11-03

    IR 

  • Transparency Improvement of SiCO Thin Film for Optical Waveguide with Reactive Sputtering Method  [in Japanese]

    Nikkuni Hiroyuki , Numata Chizuru , Yamaji Ryoto , Ito Hiroshi , Kawamata Yoshio

    … <p>In this study, the transparency of SiCO thin films for optical waveguides was improved by a reactive sputtering method with O<sub>2</sub> … as the reactive gas. … increased, the following effects were observed: an increase in O<sub>2</sub>, a decrease in the absorption coefficient, a widening of the optical gap, the relaxation of the internal stress, a reduction in the refractive index, and a reduction of the mechanical strength (hardness and young's modulus). …

    IEEJ Transactions on Sensors and Micromachines 140(12), 369-373, 2020

    J-STAGE 

  • Biofluorometric gas sensors and imaging systems for human volatiles  [in Japanese]

    MITSUBAYASHI Kohji

    <p>生体ガス（呼気，皮膚ガスなど）には，疾病や代謝などに伴う揮発性成分（有臭，無臭）が含まれ，新たな非侵襲マーカとして期待されている．筆者は，その発生機序に起因する代謝酵素などを用い，ガス情報を光情報に変換する「バイオ蛍光式ガスセンサ」を開発した．本センサにより糖尿病や脂肪代謝の指標である呼気アセトンの計測が可能で，糖尿病患者では有意差をもって濃度が高いことが示された．さらに，皮膚ガ …

    Oyo Buturi 89(11), 638-643, 2020

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  • Molecular Recognition Functional Materials and Their Application to Microanalysis

    UENO Yuko

    <p>独自に創生した機能性材料を，マイクロデバイス技術と融合し，新奇な化学・バイオセンシング機構の実現や，環境・ヘルスケア分野へのセンサ応用を展開してきたなかで，二つの研究テーマを紹介する．一つ目は，メソポーラスシリカを用いて，ベンゼンを高感度に選択吸着する分子認識素子を実現し，これを携帯型マイクロガスセンサに応用し，排気ガスモニタリングなどの実環境で有用性を実証した結果を紹介する．二 …

    BUNSEKI KAGAKU 69(7.8), 373-383, 2020

    J-STAGE 

  • Triple-Wavelength Photoacoustic gas detection for a smart endoscopy  [in Japanese]

    Wadamori Naoki

    … <p>Endogenous gas analysis such as gastric and intestinal gas potentially offers a fast and convenient noninvasive diagnostic method for a variety of diseases. … For this Purpose, a miniature photoacoustic system was developed to perform gas sampling using a smart endoscope. …

    Transactions of Japanese Society for Medical and Biological Engineering Annual58(Abstract), 435-435, 2020

    J-STAGE 

  • Special Issue on MEMS for Robotics and Mechatronics

    Esashi Masayoshi , Tanaka Shuji , Aoyagi Seiji , Mineta Takashi , Suzumori Koichi , Dohi Tetsuji , Miki Norihisa

    … We would like to elaborate on the history of MEMS technology, whose initial development started around 1970.</p><p>In 1960s, Dr. Isemi Igarashi of Toyota Central R&D Labs., Inc. in Japan developed a semiconductor pressure sensor of piezo-resistance type. … In 1980s, the pressure sensors were used to control automobile engines to clear exhaust gas regulations and thus contributed to solving environmental issues. …

    Journal of Robotics and Mechatronics 32(2), 279-280, 2020

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  • Molecule-sensor in which few narrow optical-frequency-comb-line components from all-optical semiconductor gate precisely crosses this molecule's few inherent absorption lines  [in Japanese]

    長坂 恭輔 , 石田 耕大 , 岡野 謙悟 , 鈴木 悠司 , 髙橋 直生 , 竹下 諒 , 上野 芳康

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 119(231), 21-26, 2019-10-17

  • Molecule-sensor in which few narrow optical-frequency-comb-line components from all-optical semiconductor gate precisely crosses this molecule's few inherent absorption lines  [in Japanese]

    長坂 恭輔 , 石田 耕大 , 岡野 謙悟 , 鈴木 悠司 , 髙橋 直生 , 竹下 諒 , 上野 芳康

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 119(230), 21-26, 2019-10-17

  • An optical ammonia gas sensor with adjustable sensitivity using a silicon microring resonator covered with monolayer graphene

    Kishikawa Hiroki , Sato Masayasu , Goto Nobuo , Yanagiya Shin-ichiro , Kaito Takamasa , Liaw Shien-Kuei

    Japanese Journal of Applied Physics 58(SJ), SJJD05-SJJD05, 2019-07-18

    DOI 

  • An optical ammonia gas sensor with adjustable sensitivity using a silicon microring resonator covered with monolayer graphene

    Kishikawa Hiroki , Sato Masayasu , Goto Nobuo , Yanagiya Shin-ichiro , Kaito Takamasa , Liaw Shien-Kuei

    … Integrated optic ammonia gas sensor using graphene covered silicon microring resonator is proposed. … Ammonia gas adsorption increases the Fermi energy of graphene. … The gas concentration is detected by the resonant-wavelength shift of microring resonator. … The NH3 gas concentration from 0.5 to 1000 ppm is shown to be measured by the resonant wavelength from 1551.75 to 1551.27 nm. …

    Japanese Journal of Applied Physics 58(SJ), SJJD05, 2019-07-18

    IR 

  • Development of a Laser Beam Tracker for Sensor Network with FSO  [in Japanese]

    七川 颯一 , 石元 達也 , 香川 直己

    福山大学工学部紀要 = The Memoirs of the Faculty of Engineering, Fukuyama University 42, 19-24, 2019-03

  • Sensing of Ozone Gas by Using CdSe-Based Photoluminescent Quantum Dots and Effects of Combining Noble Metals and Quantum Dots  [in Japanese]

    ANDO Masanori , INAGAKI Kosuke , KAWASAKI Hideya , SHIGERI Yasushi

    <p>蛍光量子ドットは，電子材料やバイオ分野等，さまざまな応用が期待されているが，ガスセンサへの応用はほとんど未開拓であった。筆者らはCdSe系コアシェル型量子ドットの薄膜が，空気中のppmレベルのオゾンに感応して可逆的な蛍光強度の増減を示すことを見いだした。この結果は，蛍光量子ドットの光学式オゾンガスセンサへの応用可能性を示すものである。さらに，金や白金のような貴金属ナノ粒子を，量子 …

    Journal of the Japan Society of Colour Material 92(12), 362-368, 2019

    J-STAGE 

  • Magneto-optical Cavity Effect on Magnetic Stacked Films for Hydrogen Gas Sensing Applications  [in Japanese]

    Yamane Haruki

    … <p>The magneto-optical (MO) properties on magnetic stacked films were investigated for hydrogen gas-sensing applications. … The distinct responses on the MO cavity with a Pd surface layer were observed during hydrogen gas exposure and removal.</p> …

    IEEJ Transactions on Sensors and Micromachines 139(9), 317-322, 2019

    J-STAGE 

  • Development of an Optical Multispectral Remote Sensing System for Measuring Volcanic Surface Phenomena – Promotion Project for Next Generation Volcano Research B2 (Subtopic 2-2)

    Jitsufuchi Tetsuya

    … <p>In 2016, we launched the "Promotion Project for Next Generation Volcano Research B2 (Theme B: Development of Cutting-edge Volcano Observation Technology, subtheme 2: Development of Remote Sensing Techniques for Volcano Observation), subtopic 2-2 (Development of Remote Sensing Techniques for Surface Phenomena of Volcano)" under the "Integrated Program for Next Generation Volcano Research and Human Resources Development" [1], aiming at the development of an optical multispectral remote sensing system for measuring volcanic surface phenomena. …

    Journal of Disaster Research 14(5), 728-743, 2019

    J-STAGE 

  • Magneto-optical Cavity Effect on Magnetic Stacked Films for Hydrogen Gas Sensing Applications  [in Japanese]

    山根 治起 , 高橋 慎吾 , 山川 清志 , 高橋 幸希 , 世古 暢哉 , 住吉 研 , 重村 幸治 , 三浦 聡

    「センサ・マイクロマシンと応用システム」シンポジウム論文集 電気学会センサ・マイクロマシン部門 [編] 35, 5p, 2018-10-30

  • Optical imaging system for gas visualization based on LSPR scattering detection  [in Japanese]

    副田 貴明 , 楊 中元 , 佐々 文洋 , 林 健司

    電気学会研究会資料. CHS = The papers of technical meeting on "chemical sensor", IEE Japan 2018(7-21), 25-29, 2018-07-12

  • Bio-Fluorometric Sniffer & Sniff-Cam for Real-Time Analysis of Body Volatiles  [in Japanese]

    MITSUBAYASHI Kohji

    … Biofluorometric bio-sniffers (biochemical gas sensor) for acetone and isopropanol (IPA) wereconstructed by connecting a UV-LED and a photomultiplier tube to an optical fiber with a flow-cellequipped an S-ADH (secondary alcohol dehydrogenase) membrane. …

    The Review of Laser Engineering 46(9), 506, 2018

    J-STAGE 

  • Optical-Electricity Gas-Sensing Property Detection of SDBS-WO<sub>3</sub> Film at Room Temperature

    ZHANG Yuan , WANG Jiaming , ABUDUKEREMU Hannikezi , NIZAMIDIN Patima , ABLIZ Shawket , YIMIT Abliz

    … thin film/Sn-doped glass optical waveguide sensor element was prepared by spin coating. … The gas-sensing characteristics of the fabricated sensors were studied at room temperature for various gases. … The experimental results indicate that the sensor exhibited a high selective response toward SO<sub>2</sub> … However, during an electrochemical gas-sensing performance test of the SDBS-WO<sub>3</sub> …

    Analytical Sciences 34(12), 1385-1391, 2018

    J-STAGE 

  • Detection of Trimethylamine Based on a Manganese Tetraphenylporphyrin Optical Waveguide Sensing Element

    WANG Jiaming , NIZAMIDIN Patima , ZHANG Yuan , KARI Nuerguli , YIMIT Abliz

    … <p>The sensitive detection of trimethylamine has been accomplished by using a homogeneous optical waveguide sensor system. … Also the sensor can be easily fabricated by using tetraphenylporphyrin manganese (MnTPP) as sensitive materials to detect different volatile organic compounds (VOC). …

    Analytical Sciences 34(5), 559-565, 2018

    J-STAGE 

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