Researcher Database

MATSUGUCHI, Masanobu

FacultyGraduate School of Science and Engineering Materials Science and Biotechnology
PositionProfessor
Last Updated :2020/05/31

Researcher Profile and Settings

Profile and Settings

Name

  • Name

    MATSUGUCHI, Masanobu

Affiliations

Affiliation & Job

  • Section

    Graduate School of Science and Engineering Materials Science and Biotechnology
  • Job title

    Professor

Education, Etc.

Education

  • 1986, Kyushu University
  • 1986, Kyushu University, Graduate School, Division of Natural Science
  • 1984, Kyushu University, School of Sciences
  • 1984, Kyushu University, Faculty of Science

Degree

  • Master of Science ÷
  • Dr (Science)

その他基本情報

Committee Memberships

  • 2017/01 - Today
  • 2017/01 - Today
  • 2018/10 - 2019/10
  • 2018/10 - 2019/10
  • 2007 -
  • 2002 - 2006
  • 2002 - 2006

Academic & Professional Experience

  • 2016/04 - Today, Materials Science and Biotechnology, Graduate School of Science and Engineering, Ehime University

Research Activities

Research Areas, Etc.

Research Areas

  • Nanotechnology/Materials, Structural and functional materials
  • Nanotechnology/Materials, Polymer chemistry
  • Nanotechnology/Materials, Basic physical chemistry

Book, papers, etc

Published Papers

  • Tailoring the Morphology of Polyaniline for Ammonia Gas Sensor Application, MATSUGUCHI Masanobu, Abstract of the 13th Asian Conference on Chemical Sensors, Abstract of the 13th Asian Conference on Chemical Sensors, 2019/11, [Refereed], [Invited]
  • Fabrication of Phthalocyanine Nanorods Colloids by Pulse Laser Fragmentation in Liquids and Their Application to Gas Sensors, MATSUGUCHI Masanobu, Abstract of the Final International Symposium on Photosynergetics, Abstract of the Final International Symposium on Photosynergetics, 2019/10, [Refereed]
  • HCl gas sensor coating based on poly(N-isopropylacrylamide) nanoparticles prepared from water-methanol binary solvent, MATSUGUCHI Masanobu, Sensors, Sensors, 2018/10, [Refereed], 10.3390/s18103283
  • Poly(N-isopropylacrylamide) nanoparticle-based gas sensor coating prepared from binary aqueous solutions, MATSUGUCHI Masanobu, Abstract of the 12th Asian Conference on Chemical Sensors, Abstract of the 12th Asian Conference on Chemical Sensors, 2017/11, [Refereed]
  • 2017/11, [Refereed], 0925-4005, 10.1016/j.snb.2017.05.130
  • 2016/08, [Refereed], 0925-4005, 10.1016/j.snb.2016.02.145
  • Morphological study of poly(N-isopropylacrylamide) on an application for a mass-sensitive HCl gas sensor, MATSUGUCHI Masanobu, TADA Ai, KUMADA Masashi, Abstract of the 11th Asian Conference on Chemical Sensors, Abstract of the 11th Asian Conference on Chemical Sensors, 2015/11, [Refereed]
  • HCl gas adsorption/desorption properties of poly(N-isopropylacrylamide) brushes grafted onto quartz resonator for gas-sensing applications, MATSUGUCHI Masanobu, TAKAOKA Kenta, KAI Haruka, Sensors and Actuators B, Sensors and Actuators B, 2015/03, [Refereed], 10.1016/j.snb.2014.10.137
  • 2014/01, [Refereed], 0925-4005, 10.1016/j.snb.2013.08.095
  • Highly sensitive toluene vapor sensors using carbon black/amino-functional copolymer composites, Masanobu Matsuguchi, Koji Asahara, Takashi Mizukami, Journal of Applied Polymer Science, Journal of Applied Polymer Science, 2013/02, [Refereed], 0021-8995, 10.1002/app.37578
  • 2011/12, [Refereed], 0925-4005, 10.1016/j.snb.2011.09.017
  • 2011/04, [Refereed], 1546-198X, 10.1166/sl.2011.1638
  • Fabrication of Polyaniline Nanofiber Films and Their NH3 Gas-sensing Properties, Abstract of the 7th Asian Conference on Electrochemistry, Abstract of the 7th Asian Conference on Electrochemistry, 2010, [Refereed]
  • Design of Polymer-Based Gas Sensors, Technical Digest of the 13th International Meeting on Chemical Sensors, Technical Digest of the 13th International Meeting on Chemical Sensors, 2010, [Refereed]
  • 2009/01, [Refereed], 0021-8995, 10.1002/app.29142
  • 2009, [Refereed], 0013-4651, 10.1149/1.3184148
  • Chemically modified copolymer coatings for mass-sensitive toluene vapor sensors, Masanobu Matsuguchi, Toshiyuki Uno, Takashi Aoki, Masami Yoshida, Sensors and Actuators, B: Chemical, Sensors and Actuators, B: Chemical, 2008/05, [Refereed], 0925-4005, 10.1016/j.snb.2007.12.052
  • Poly(acrylamide) derivatives for QCM-based HCl gas sensor applications, Masanobu Matsuguchi, Yoshito Kadowaki, Sensors and Actuators, B: Chemical, Sensors and Actuators, B: Chemical, 2008/03, [Refereed], 0925-4005, 10.1016/j.snb.2007.10.049
  • Gas Adsorption Properties of Surface-confined Polyamidoamine Dendrimers on Quartz Resonators, MATSUGUCHI Masanobu, KOTANI Yorikazu, Extended Abstracts of the Papers Presented at the International Meeting on Chemical Sensors (IMCS 12), Extended Abstracts of the Papers Presented at the International Meeting on Chemical Sensors (IMCS 12), 2008, [Refereed]
  • 2007/01, [Refereed], 0925-4005, 10.1016/j.snb.2006.02.039
  • 2006/09, [Refereed], 0376-7388, 10.1016/j.memsci.2006.04.043
  • A QCM-based HCl gas sensor coated with poly(acrylamide) derivatives, Proceedings of the 11th International Meeting on Chemical Sensors, Proceedings of the 11th International Meeting on Chemical Sensors, 2006, [Refereed]
  • 2006/01, [Refereed], 0925-4005, 10.1016/j.snb.2005.02.028
  • 2005/07, [Refereed], 0925-4005, 10.1016/j.snb.2004.11.044
  • 2004/09, [Refereed], 0925-4005, 10.1016/j.snb.203.12.061
  • Amino-functional cross-linked polymer coatings for QCM-based NO2 gas monitoring applications, Technical Digest of the 10th International Meeting on Chemical Sensors, Technical Digest of the 10th International Meeting on Chemical Sensors, 2004, [Refereed]
  • 2004/01, [Refereed], 0925-4005, 10.1016/j.snb.2003.07.007
  • 2003/08, [Refereed], 0925-4005, 10.1016/S0925-4005(03)00325-3
  • 2003/08, [Refereed], 0013-4651, 10.1149/1.1592522
  • 2003/06, [Refereed], 1344-3542
  • 2003/06, [Refereed], 0021-8995, 10.1002/app.12135
  • 2003/06, [Refereed], 1344-3542
  • 2002/04, [Refereed], 0379-6779, 10.1016/S0379-6779(01)00504-5
  • 2002/01, [Refereed], 0021-8995, 10.1002/app.10062
  • SO2 gas sensors using polymers with different amino groups, Masanobu Matsuguchi, Koji Tamai, Yoshiro Sakai, Sensors and Actuators, B: Chemical, Sensors and Actuators, B: Chemical, 2001/06, [Refereed], 0925-4005, 10.1016/S0925-4005(01)00735-3
  • Humidity sensor based on alkali salts of poly(2-acrylamido-2-methylpropane sulfonic acid), Yoshiro Sakai, Masanobu Matsuguchi, Norimichi Yonesato, Electrochimica Acta, Electrochimica Acta, 2001/03, [Refereed], 0013-4686, 10.1016/S0013-4686(00)00746-5
  • Effect of matrix polymer on the NH3 sensing properties of polyaniline blend films, Proceedings of the 5th East Asian Conference on Chemical Sensors, Proceedings of the 5th East Asian Conference on Chemical Sensors, 2001, [Refereed]
  • 2000/12, [Refereed], 0021-8995, 10.1002/1097-4628(20001205)78:10<1744::AID-APP50>3.0.CO;2-V
  • 2000/12, [Refereed], 0021-8995, 10.1002/1097-4628(20001205)78:10<1744::AID-APP50>3.0.CO;2-V
  • 2000/07, [Refereed], 0925-4005, 10.1016/S0925-4005(00)00313-0
  • Drift phenomenon of capacitive-type relative humidity sensors in a hot and humid atmosphere, Masanobu Matsuguchi, Etsuro Hirota, Takaaki Kuroiwa, Sachiko Obara, Tsutomu Ogura, Yoshiro Sakai, Journal of the Electrochemical Society, Journal of the Electrochemical Society, 2000/07, [Refereed], 0013-4651, 10.1149/1.1393608
  • Humidity sensor based on alkali salts of poly(2-acrylamido-2-methylpropane sulfonic acid), Abstract of the 7th International Symposium on Polymer Electrolytes, Abstract of the 7th International Symposium on Polymer Electrolytes, 2000, [Refereed]
  • SO2 gas sensors using a polymer with different amino groups, Abstract of 8th International Meeting on Chemical Sensors, Abstract of 8th International Meeting on Chemical Sensors, 2000, [Refereed]

Books etc

  • 2014
  • 2008
  • 2003

Conference Activities & Talks

  • 2019/09
  • Optical Nitric Oxide Gas Sensor Based on Cobalt(II) Tetraphenylporphyrin Composite Films, MATSUGUCHI Masanobu, The 66th Chemical Sensor Symposium, 2019/09
  • Fabrication of Polyaniline-Coated Polystyrene Microspheres for Ammonia Gas Sensor Application, MATSUGUCHI Masanobu, The 66th Chemical Sensor Symposium, 2019/09
  • 2019/03
  • 2019/03
  • 2018/11
  • HCl gas adsorption/desorption chracteristics of NIPAM-BMA copolymer nanoparticles, ARIKAWA Daiki, MATSUGUCHI Masanobu, The 64th Chemical Sensor Symposium, 2018/09
  • 2017/11, 招待有り
  • 2017/09
  • 2017/09
  • Fabrication of PNIPAM nanoparticle films by using a cononsolvency effect and their HCl gas adsorption properties, FUJII Shinnosuke, YAGI Hajime, MATSUGUCHI Masanobu, The 62nd Chemical Sensor Symposium, 2017/09
  • Fabrication of surface-grated film of polyaniline and its ammonia gas sensing properties, KITAGATA Tokirou, YAGI Hajime, MATSUGUCHI Masanobu, The 62nd Chemical Sensor Symposium, 2017/09
  • 2016/11
  • FABRICATION OF POLY(N-ISOPROPYLACRYLAMIDE) PARTICLES USING SPRAY-COATING METHOD AND ITS HCl GAS ADSORPTION PROPERTIES, Proceedings of the Chemical Sensor Symposium, 2015/09
  • Functionalization of parylene-A films with polymer brushes for gas-sensing applications, SAKAGUCHI Tomoki, MATSUGUCHI Masanobu, The 59th Chemical Sensor Symposium, 2015/09

Misc

  • A Fractional Exhaled NO gas sensor using Porphyrin Derivatives, MATSUGUCHI Masanobu, Ddenki Kagaku, Ddenki Kagaku, 86, 112, 117, 2018/06, 10.5796/denkikagaku.18-FE0013
  • 21, 5-6, 122, 127, 2008
  • 24, 1, 26, 30, 2008
  • 52, 7, 479, 2003, 10.1295/kobunshi.52.479
  • 17, 4, 143, 149, 2001
  • 67, 10, 950, 956, 1999/10, 1344-3542, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0033276729&origin=inward
  • Humidity sensors using chemically modified polymer thin films, Y Sakai, M Matsuguchi, ELECTROCHEMISTRY, ELECTROCHEMICAL SOC JAPAN, ELECTROCHEMISTRY, 67, 10, 950, 956, 1999/10, 1344-3542, Most of the humidity sensors practically used are based on the change ill electrical properties of polymers or ceramics with humidity. They are either resistive-type or capacitive-type sensors. Various chemical modifications of polymeric materials have been utilized to improve the properties of sensors such as sensitivity, hysteresis, long-term stability, durability in unfavorable atmospheres such as dewdrops or vapors' of volatile organic compounds(VOC), etc. This paper overviews the novel methods of chemical modification which have been proposed by the authors.
  • A Capacitive-type Relative Humidity Sensor Having a Double Layer Structure Consisting of a Photocrosslinked PVCa and a PMMa Film, Masanobu Matsuguchi, Shinya Kubo, Yoshiro Sakai, Electrochemistry, Electrochemistry, 67, 170, 174, 1999/02, 1344-3542, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0033360569&origin=inward, A double layer structure sensor (DLS sensor) consisting of a photocrosslinked PVCA and a PMMA film was prepared. Advantages of the photocrosslinked PVCA sensor and the PMMA sensor were reflected in the initial sensor performance of the DLS sensor. The sensing characteristics were affected by the thickness and the degree of crosslinking of the photocrosslinked PVCA layer. There was an optimum PVCA film thickness (around 0.1 μm) for reducing the effect of both instantaneous and long-term coexistent acetone vapor.
  • 67, 2, 170, 174, 1999
  • 67, 2, 170, 174, 1999
  • 52, 1-2, 53, 57, 1998/09, 0925-4005, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0032156565&origin=inward
  • 49, 3, 179, 185, 1998/07, 0925-4005, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0032121159&origin=inward
  • 3, 229, 230, 1998, 0366-7022, 10.1246/cl.1998.229, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0032360437&origin=inward
  • 52, 53, 57, 1998
  • 49, 3, 179, 185, 1998
  • 3, 229, 230, 1998, 0366-7022, 10.1246/cl.1998.229
  • 52, 53, 57, 1998
  • 49, 3, 179, 185, 1998
  • 3, 229, 230, 1998, 0366-7022, 10.1246/cl.1998.229
  • 63, 12, 1681, 1691, 1997/03, 0021-8995, 10.1002/(SICI)1097-4628(19970321)63:12<1681::AID-APP18>3.0.CO;2-2, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0031097843&origin=inward
  • 63, 12, 1681, 1691, 1997, 0021-8995, 10.1002/(SICI)1097-4628(19970321)63:12<1681::AID-APP18>3.0.CO;2-2
  • 63, 12, 1681, 1691, 1997, 0021-8995, 10.1002/(SICI)1097-4628(19970321)63:12<1681::AID-APP18>3.0.CO;2-2
  • Effect of the film thickness on the humidity sensing characteristics of cross-linked PVCA film, Masanobu Matsuguchi, Masami Minomura, Yoshihiko Sadaoka, Takaaki Kuroiwa, Yoshiro Sakai, Electrochemistry, Electrochemistry, 64, 1107, 1112, 1996/12, 1344-3542, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0347070315&origin=inward
  • 35, 1-3, 85, 90, 1996/09, 0925-4005, 10.1016/S0925-4005(96)02019-9, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0030234081&origin=inward
  • 34, 1-3, 349, 355, 1996/08, 0925-4005, 10.1016/S0925-4005(96)01826-6, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0013050126&origin=inward
  • 8, 2, 69, 78, 1996, 0914-4935, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0030532748&origin=inward
  • 35, 1/3, 85, 90, 1996, 0925-4005, 10.1016/S0925-4005(96)02019-9
  • 64, 10, 1107, 1112, 1996
  • 34, 1/3, 349, 355, 1996, 0925-4005, 10.1016/S0925-4005(96)01826-6
  • 8, 2, 069-078, 1996
  • 35, 1/3, 85, 90, 1996, 0925-4005, 10.1016/S0925-4005(96)02019-9
  • 64, 10, 1107, 1112, 1996
  • 34, 1/3, 349, 355, 1996, 0925-4005, 10.1016/S0925-4005(96)01826-6
  • 8, 2, 069-078, 1996
  • Effect of cross-linking degree of PVCA film on the characteristics of capacitive-type humidity sensor, Masanobu Matsuguchi, Masafumi Shinmoto, Yoshihiko Sadaoka, Takaaki Kuroiwa, Yoshiro Sakai, International Conference on Solid-State Sensors and Actuators, and Eurosensors IX, Proceedings, International Conference on Solid-State Sensors and Actuators, and Eurosensors IX, Proceedings, 2, 825, 828, 1995/12, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0029546859&origin=inward, A cross-linked PVCA film was prepared on the substrate by using photoirradiation technique and it was applied for the capacitive-type humidity sensor. The sensitivity was enhanced until the cross-linking degree became ca. 95%, while further progress of the reaction resulted in the decrement of the sensitivity. This was related to the variation of water adsorption ability with the cross-linking degree. A similar behavior was observed for the adsorption of other organic vapors. These behaviors were explained by the microhole distribution change in the film with the progress of the cross-linking reaction.
  • 25, 1-3, 689, 691, 1995/04, 0925-4005, 10.1016/0925-4005(95)85152-6, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0029292576&origin=inward
  • A thin-film polysulfone-based capacitive-type relative-humidity sensor, Takaaki Kuroiwa, Tetsuya Miyagishi, Akihiko Ito, Masanobu Matsuguchi, Yoshihiko Sadaoka, Yoshiro Sakai, Sensors and Actuators: B. Chemical, Sensors and Actuators: B. Chemical, 25, 692, 695, 1995/01, 0925-4005, 10.1016/0925-4005(95)85153-4, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0029292053&origin=inward, A capacitive-type relative-humidity sensor utilizing a thin polysulfone (PSF) sensing material has been fabricated to achieve reproducible relative-humidity measurements with long-term stability even in hot and humid conditions. The sensor showed a good initial performance with 0.5%U(%r.h) hysteresis and 0.1±0.1%U °C-1 temperature coefficient of capacitance along with good stability with less than +3%U shift after 1000 h of exposure to 40 °C, 90%U conditions. © 1995.
  • Effect of carbon dioxide on the electrical conductivity of polyethylene glycol-alkali carbonate complex film, Yoshiro Saikai, Yoshihiko Sadaoka, Masanobu Matsuguchi, Hirofumi Yokouchi, Kazuhiko Tamai, Materials Chemistry & Physics, Materials Chemistry & Physics, 42, 1, 73, 76, 1995/01, 0254-0584, 10.1016/0254-0584(95)80043-3, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0029390991&origin=inward, A solid film consisting of triethylene glycol, K2CO3-polyethylene glycol of high mol. wt., was prepared on a sintered alumina substrate with a pair of golden electrodes and their electrical conductivity was measured. When CO2 gas was introduced into the air, the conductivity decreased. This change was reversible. The sensitivity to CO2, designated as (change in conductivity caused by CO2)/(conductivity in air), was the highest when a polyethylene glycol of mol. wt. 6000 was used. The sensing mechanism was interpreted in terms of the change in concentration of the charge carrier K+ ion by CO2. © 1995.
  • 63, 9, 841, 846, 1995
  • 63, 4, 325, 328, 1995
  • 63, 9, 841, 846, 1995
  • 63, 4, 325, 328, 1995
  • 141, 3, 614, 618, 1994, 0013-4651, 10.1149/1.2054779
  • 67, 1, 46, 51, 1994, 0009-2673, 10.1246/bcsj.67.46
  • 141, 3, 614, 618, 1994, 0013-4651, 10.1149/1.2054779
  • 67, 1, 46, 51, 1994, 0009-2673, 10.1246/bcsj.67.46
  • Detection of carboxylic acid vapor using poly(N,N-dimethylaminoethyl methacrylate), Yoshiro Sakai, Yoshihiko Sadaoka, Masanobu Matsuguchi, Tatsumi Saito, Sensors and Actuators: B. Chemical, Sensors and Actuators: B. Chemical, 14, 1/3, 625, 626, 1993/01, 0925-4005, 10.1016/0925-4005(93)85120-Y, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0027608243&origin=inward
  • A thin film polyimide based capacitive type relative humidity sensor, Takaaki Kuroiwa, Tomohito Hayashi, Akihiko Ito, Masanobu Matsuguchi, Yoshihiko Sadaoka, Yoshiro Sakai, Sensors and Actuators: B. Chemical, Sensors and Actuators: B. Chemical, 13, 1/3, 89, 91, 1993/01, 0925-4005, 10.1016/0925-4005(93)85331-4, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0027590717&origin=inward, A capacitive type relative humidity sensor utilizing newly developed cross-linked fluorinated polyimide has been fabricated using thin film technology and evaluated for commercial building and factory applications. The sensor showed a good initial performance with less than 1% r.h. hysteresis and a 0 ± 0.1% r.h./°C temperature coefficient of capacitance along with good stability especially under high temperature and high humidity conditions. Also, because of the inherent chemical resistance of the polyimide, good sensor stability when subjected to volatile environments has been demonstrated. © 1993.
  • Effect of Sorbed Water on the Dielectric Properties of Acetylene-Terminated Polyimide Resins and Their Application to a Humidity Sensor, M. Matsuguchi, T. Kuroiwa, Y. Sadaoka, A. Ito, K. Nosaka, M. Ishibashi, Y. Sakai, Journal of the Electrochemical Society, Journal of the Electrochemical Society, 140, 3, 825, 829, 1993/01, 0013-4651, 10.1149/1.2056166, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84975395971&origin=inward, A cured acetylene-terminated polyisoimide oligomer was used to prepare a capacitive-type humidity sensor. Sorption behavior of water on the cured film was examinedby measuring the dielectric constant and water content. The amount of sorbed water was small and the sorbed water did not form clusters. This is due to the hydrophobic nature and rigid structure of the film. The sorption behavior reflects its excellent sensor properties, i.e., low hysteresis, low temperature coefficient, durability against acetone vapor, and long-term stability in a high temperature and humid atmosphere. Among the polyimides prepared by curing the oligomers with different chain lengths, the mostsuitable composition for a reliable capacitive-type humidity sensor was API-3-API-1. © 1993, The Electrochemical Society, Inc. All rights reserved.
  • 140, 2, 432, 436, 1993, 0013-4651, 10.1149/1.2221063
  • Solid state electrochemical CO2 gas sensor using zircon-based sodium ionic conductors, Y. Sadaoka, M. Matsuguchi, Y. Sakai, D. Manabe, Journal of Materials Science, Journal of Materials Science, 28, 8, 2035, 2039, 1993/01, 0022-2461, 10.1007/BF00367559, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0027578045&origin=inward, The sensing properties and characteristics of a zircon-based sodium ionic conductor as an electrochemical CO2 gas sensor which can be expressed as O2, Pt|Na ion conductor|Pt, Na2CO3, CO2, O2 were examined. The electro motive force (e.m.f.) was found to be a function of the logarithm of CO2 concentration and the 90% response time was less than 2 min at 430°C while the number of electrons for the electrochemical reaction was slightly above than 2. The coexistence of water molecules (≥ 90% RH) induced the response time delay and the lowering of the e.m.f. value. Changes in the response characteristics were mostly recovered after cutting off the water vapour, while the recovery time was prolonged when the working temperature was increased. © 1993 Chapman &amp; Hall.
  • 140, 2, 432, 436, 1993, 0013-4651, 10.1149/1.2221063
  • Ionic conductivity in Na<inf>5</inf>YSi<inf>4</inf>O<inf>12</inf>-based ceramics with and without additives, Y. Sadaoka, M. Matsuguchi, Y. Sakai, K. Komatsubara, Journal of Materials Science, Journal of Materials Science, 27, 18, 5045, 5051, 1992/09, 0022-2461, 10.1007/BF01105272, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34249838746&origin=inward, Addition of Na2O-Y2O3-SiO2 glass to Na5YSi4O12 during the sintering process induced enhancements in conductivity and decrease in its activation energy. The highest conductivity and activation energy were 1.3×10-1 S cm-1 at 300 ‡C and 0.21 eV, respectively, for Na5YSi4O12 with about 20 wt% Na2O-Y2O3-SiO2 glass which was sintered at 1000 ‡C. This improvement may be caused by the formation of a Na5YSi4O12 phase from the added glass. Such an improvement in the electrical characteristics was not achieved by the addition of 10 wt% or more Na2O-Al2O3-4SiO2 glass or α-alumina in which the conductivity decreased monotonically with an increase in the amount of additive. © 1992 Chapman &amp; Hall.
  • Optical humidity sensing characteristics of composite thin films of hydrolysed nafion-dye with a terminal N-phenyl group, Yoshihiko Sadaoka, Masanobu Matsuguchi, Yoshiro Sakai, Yu Uki Murata, Journal of Materials Science, Journal of Materials Science, 27, 18, 5095, 5100, 1992/09, 0022-2461, 10.1007/BF01105279, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0000752775&origin=inward, By using composite films of hydrolysed nafion and dyes having cyanine or triphenyl structures and with a terminal N-phenyl group, an optical humidity sensor has been fabricated. In the reflection mode, the optical intensity of the absorption peaks which depend on the used dyes decreases with relative humidity. The raising and recovery times are less than 1 min. In dry air, the alkyl amine group reacted with SO3H of hydrolysed nafion and formed a proton additive. Sorption of water molecules induces the deprotonation of the quaternized ammonium group. © 1992 Chapman &amp; Hall.
  • Optical humidity sensing characteristics of Nafion-dyes composite thin films, Yoshihiko Sadaoka, Masanobu Matsuguchi, Yoshiro Sakai, Yu uki Murata, Sensors and Actuators: B. Chemical, Sensors and Actuators: B. Chemical, 7, 1/3, 443, 446, 1992/01, 0925-4005, 10.1016/0925-4005(92)80340-4, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0026838016&origin=inward, By using composite films of hydrolyzed Nafion and dyes having a terminal N-phenyl group, an optical humidity sensor has been fabricated. In the reflection mode, the optical intensity of the absorption peaks which depend on the dyes used was influenced by relative humidity. In dry air, the alkyl amine group reacted with SO3H of hydrolyzed Nafion and formed a proton additive. Sorption of water molecules induces the deprotonation of the quaternized ammonium group. © 1992.
  • Effect of heat pretreatment on electrical conductance changes by NO<inf>2</inf> adsorption of lead phthalocyanine thin film, Y. Sadaoka, M. Matsuguchi, Y. Sakai, Y. Mori, Journal of Materials Science, Journal of Materials Science, 27, 5215, 5220, 1992/01, 0022-2461, 10.1007/PL00020242, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0041850603&origin=inward, The sensing characteristics of an NO2 gas sensor using lead phthalocyanine thin film are influenced by heat-pretreatment time and ambient gas. The response behaviour of conductance for the change in ambient gas was characterized using Elovich&#039;s equation. The first stage in the adsorption and desorption kinetics reflects surface phenomena and the second stage the film diffusion. Both components were improved by heat treatment in air. The rising time in the NO2 adsorption process was within 2 min, and the recovery time within 5 min at 130 °C for the film annealed in air for 1 h. The heat pretreatment induced the formation of a continuous layer of fine particles, ∼ 0.1 μm in size, and larger single crystals isolated from each other, which formed on the continuous layer. The formation of the larger single crystals is not preferable in fabricating a sensor with fast rising and recovery times. © 1992, Chapman &amp; Hall. All rights reserved.
  • 27, 19, 5215, 5220, 1992, 0022-2461, 10.1007/BF02403819
  • 1, 53, 56, 1992, 0366-7022, 10.1246/cl.1992.53
  • 27, 19, 5215, 5220, 1992, 0022-2461, 10.1007/BF02403819
  • 1, 53, 56, 1992, 0366-7022, 10.1246/cl.1992.53
  • Water resistive humidity sensor composed of interpenetrating polymer networks of hydrophilic and hydrophobic methacrylate, Y. Sakai, Y. Sadaoka, M. Matsuguchi, K. Hirayama, Transducers '91, Transducers '91, 562, 565, 1991/12, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0026392288&origin=inward, An interpenetrating polymer network (IPN) film composed of cross-linked 2-hydroxy-3-methacryl-oxypropyl trimethylammonium chloride (HMPTAC) polymer and cross-linked ethylene glycol dimethacrylate (EGDMA) polymer was formed on a sintered alumina substrate with interdigitated gold electrodes to fabricate a water-resistive humidity sensor. The impedance of the sensor decreased from ca. 10 7 Ω to ca. 10 2 Ω with increasing humidity from 0% RH to 90% RH. In spite of the cross-linking and interpenetrating with the hydrophobic polymer, the sensitivity is almost the same as that of the HMPTAC homopolymer sensor. Little hysteresis was observed. The characteristics of this IPN sensor changed little even after soaking in water for 120 min. This sensor is more water-resistive than other IPN sensors prepared by using melamine resin or HEMA polymer as a second incorporating polymer. It seems that this is due to the good compatibility of HMPTAC and EGDMA.
  • Optical fiber humidity sensor using nafionr-tri-phenylcarbinol composite, Yoshihiko Sadaoka, Masanobu Matsuguchi, Yoshiro Sakai, Journal of the Electrochemical Society, Journal of the Electrochemical Society, 138, 2, 614, 615, 1991/01, 0013-4651, 10.1149/1.2085639, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0026105580&origin=inward, By using Nafion1 film with tri-phenylcarbinol, the optical fiber humidity sensor was fabricated. The optical intensity around 450 nm in the reflection mode increases with the relative humidity. The resolution, i.e., the sensitivity to the relative humidity decreases in the range above 30% relative humidity. In a dry atmosphere, the dye exists in the form of tri-phenylcarbonium ion, and with increasing the relative humidity, the dye structure changes from the carbonium ion to carbinol. © 1991, The Electrochemical Society, Inc. All rights reserved.
  • Optical-fibre and quartz oscillator type gas sensors: Humidity detection by Nafion® film with crystal violet and related compounds, Y. Sadaoka, M. Matsuguchi, Y. Sakai, Sensors and Actuators: A. Physical, Sensors and Actuators: A. Physical, 26, 1/3, 489, 492, 1991/01, 0924-4247, 10.1016/0924-4247(91)87038-5, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0026123285&origin=inward, By using Nafion® film with crystal violet and malachite green, an optical-fibre and quartz oscillator type humidity sensor has been fabricated. The optical intensity, with a minimum at 615 nm in the reflection mode, decreases with relative humidity for a film with malachite green. The rise and recovery times are less than 1 min and the hysteresis is only ± 1%RH at 50%RH. For the film with crystal violet, a similar characteristic is confirmed at 630 nm. Composite films can be used as an optical and quartz oscillator type humidity sensor, since the sorption of water induces colour and oscillating frequency changes. © 1991.
  • A Humidity Sensor Using Polytetrafluoroethylene-Graft-Quaternized-Polyvinylpyridine, Yoshiro Sakai, Yoshihiko Sadaoka, Masanobu Matsuguchi, Yoshiaki Kanakuro, Masaharu Tamura, Journal of the Electrochemical Society, Journal of the Electrochemical Society, 138, 8, 2474, 2478, 1991/01, 0013-4651, 10.1149/1.2085997, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0026202641&origin=inward, On polytetrafluoroethylene films (0.05 and 0.5 mm thick), polyvinylpyridine was graft-polymerized by γ-ray irradiation. After quaternization of the pyridyl group of the grafted films, sandwich and surface-type sensors were prepared by vacuum deposition of gold electrodes. Electrical properties of these resistive-type sensors were studied in relation to the grafting ratio as well as the amount of sorbed water. Scanning electron microscopy observations and impedance measurements suggest that for the 0.05 mm film, graft-polymerization proceeds homogeneously into the film, while for the 0.5 mm film, the reaction is limited only near the surface of the film and is inhomogeneous. The prepared sensor is completely resistant to water. © 1991, The Electrochemical Society, Inc. All rights reserved.
  • A Capacitive-Type Humidity Sensor Using Cross-Linked Poly(methyl methacrylate) Thin Films, M. Matsuguchi, T. Kuroiwa, Y. Sadaoka, A. Ito, Y. Sakai, Journal of the Electrochemical Society, Journal of the Electrochemical Society, 138, 6, 1862, 1865, 1991/01, 0013-4651, 10.1149/1.2085886, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0026173423&origin=inward, A capacitive-type humidity sensor was prepared using cross-linked poly(methyl methacrylate) (PMMA). The electrical capacitance changed linearly with the relative humidity over the range of 10-90% RH and the sensitivity (the ratio of capacitance at 90% RH to that at 10% RH) was about 1.13. The amount of sorbed water on PMMA at 90% RH was 25 mg/g which was one-third of that on cellulose acetate butyrate. This low hygroscopicity of PMMA was effective in reducing any hysteresis. The decrement of temperature coefficient and high durability for acetone vapor were achieved using the crosslinked PMMA film with divinyl benzene or ethylene glycol dimethacrylate as the cross-linking agent. © 1991, The Electrochemical Society, Inc. All rights reserved.
  • 40, 3, 30, 36, 1991
  • Effect of crystal form on the conductance in oxidative gases of metal-free and some metal phthalocyanines, Y. Sadaoka, M. Matsuguchi, Y. Sakai, Y. Mori, W. Göpel, Sensors and Actuators: B. Chemical, Sensors and Actuators: B. Chemical, 4, 3/4, 495, 498, 1991/01, 0925-4005, 10.1016/0925-4005(91)80157-F, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0026172379&origin=inward, The conductance of a semiconductor can be expressed by the Meyer-Neldel relation, i.e., σ = σ*exp(E/kT*)exp(-E/kT); the adsorption of an oxidative molecule induces a decrease in the activation energy, while the pre-exponential factor is almost unchanged. T* for phthalocyanine films is considerably higher than that for whiskers. This difference arises because the interaction between phthalocyanine and an adsorbed molecule is a function of the depth from the phthalocyanine surface. The activation energy for conduction is almostly uninfluenced by the crystal form, i.e., film and whisker. © 1991.
  • 4, 717, 720, 1991, 0366-7022, 10.1246/cl.1991.717
  • 40, 3, 30, 36, 1991
  • 4, 717, 720, 1991, 0366-7022, 10.1246/cl.1991.717
  • 9, 9, 1028, 1032, 1990/09, 0261-8028, 10.1007/BF00727867, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0025490943&origin=inward
  • Adsorption of cholesterol at hexane/water interface, M. Matsuguchi, M. Aratono, K. Motomura, Bulletin of the Chemical Society of Japan, Bulletin of the Chemical Society of Japan, 63, 17, 20, 1990/06, 0009-2673, 10.1246/bcsj.63.17, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0025283807&origin=inward, The interfacial tension between hexane solution of cholesterol and water was measured as a function of temperature and the mole fraction of cholesterol in hexane under atmospheric pressure. The interfacial tension vs. mole fraction of cholesterol curve was observed to have two break points at a certain temperature; the concentration of the break point increases with increasing temperature. The experimental results were analyzed by applying the rigorous thermodynamics of adsorption at interfaces developed previously. The excess number of moles of cholesterol and the thermodynamic quantity changes associated with its adsorption were found to show the discontinuous changes at the break points. It was concluded that the first-order phase transition takes place from the gaseous to the expanded state and from the expanded to the condensed one in the adsorbed film of cholesterol at the hexane/water interface.
  • 24, 6, 2081, 2092, 1989/06, 0022-2461, 10.1007/BF02385425, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0024681586&origin=inward
  • 24, 2, 432, 438, 1989/02, 0022-2461, 10.1007/BF01107423, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0024607148&origin=inward
  • A humidity sensor using graft copolymer with polyelectrolyte branches, Y. Sakai, Y. Sadaoka, M. Matsuguchi, V. L. Rao, M. Kamigaki, Polymer, Polymer, 30, 6, 1068, 1071, 1989/01, 0032-3861, 10.1016/0032-3861(89)90081-5, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0024680757&origin=inward, 2-Hydroxy-3-methacryloxypropyl trimethylammonium chloride was grafted on to the pore wall of microporous polyethylene film by a γ-ray pre-irradiation method. A humidity sensor was prepared by depositing gold electrodes on both surfaces of the grafted film. Complex impedance measurements were carried out at various humidities. From the complex impedance analysis, the values of parallel resistance and parallel capacitance were estimated. The parallel resistance decreased as the humidity increased, while the parallel capacitance remained constant. The parallel resistance also decreased as the grafting ratio increased. The value of parallel resistance depends on the amount of sorbed water in the film. The sensor is stable for a long time in ordinary atmospheric conditions. It is even stable in water for more than 2 h. The sensor prepared by γ-ray pre-irradiation at 9.0 × 104 R h-1 for 4 h was heat-resistant up to 130°C.
  • Electrical conductivity of Na<inf>3</inf>Zr<inf>2</inf>Si<inf>2</inf>PO<inf>12</inf>-doped sodium aluminosilicate glass, Y. Sadaoka, M. Matsuguchi, Y. Sakai, S. Nakayama, Journal of Materials Science, Journal of Materials Science, 24, 1299, 1304, 1989/01, 0022-2461, 10.1007/PL00020211, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0024640597&origin=inward, To improve the electrical conductivity of sodium aluminosilicate glass and Na3Zr2Si2PO12 crystal, crystal-glass composite systems were examined. For the ceramics with a lower content of the glass, the activation energy of ionic conduction was lowered and the conductivity enhanced by adding glass and the pre-exponential factor was lowered. Whilst the activation energy of ionic conduction of Na2O-Al2O3- XSiO2 (X=4, 6) glasses could not be lowered to the limiting value of ca. 0.5 eV, the glass-based sample doped with Na3Zr2Si2PO12 powder indicated that the high ionic conductivity and its activation energy was lowered to ca. 0.3 eV. The composite of Na3Zr2Si2PO12 crystalline powder and sodium aluminosilicate glass is a useful material to the solid electrolyte. © 1989, Chapman and Hall Ltd.. All rights reserved.
  • Humidity sensors based on organopolysiloxanes having hydrophilic groups, Y. Sakai, Y. Sadaoka, M. Matsuguchi, N. Moriga, M. Shimada, Sensors and Actuators, Sensors and Actuators, 16, 359, 367, 1989/01, 0250-6874, 10.1016/0250-6874(89)85006-1, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0024640126&origin=inward, Two types of humidity sensors were prepared from organosilicon compounds having hydrophilic groups such as NH2, N +(CH3)3Cl- and SO3H. The first is a pressed silica gel disk grafted with hydrophilic organosilicon compounds. The second type is a sintered alumina plate on which a cross-linked organopolysiloxane film having a hydrophilic group was formed. The impedance was measured in the humidity range 0 - 100%. The impedance varies with the hydrophilic group in the order SO3H &lt; N +(CH3)3Cl- &lt; NH2 &lt; OH. Also the amount of adsorbed water depends on these groups, according to the order N +(CH3)3Cl- &gt; SO3H &gt; NH2 &gt; OH. The grafted silica gel device is quite resistant to water. The humidity-sensing characteristics of the alumina-plate type sensor do not change even after soaking in water for several hours. © 1989.
  • 24, 1, 101, 104, 1989/01, 0022-2461, 10.1007/BF00660939, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0024303634&origin=inward
  • 136, 1, 171, 174, 1989/01, 0013-4651, 10.1149/1.2096579, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0024302352&origin=inward
  • ELECTRICAL-PROPERTIES OF ALPHA-ZIRCONIUM PHOSPHATE AND ITS ALKALI SALTS IN A HUMID ATMOSPHERE, Y SADAOKA, M MATSUGUCHI, Y SAKAI, S MITSUI, JOURNAL OF MATERIALS SCIENCE, CHAPMAN HALL LTD, JOURNAL OF MATERIALS SCIENCE, 23, 8, 2666, 2675, 1988/08, 0022-2461, 10.1007/BF00547435, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0024056966&origin=inward, Humidity dependence of impedance was examined by using the complex impedance analysis for fine crystalline zirconium bis(monohydrogen phosphate) monohydrate and its alkali salts. The value of C0 in Cp(ω)=C0(j ω/ω0)-α was hardly dependent on the relative humidity and monovalent cation species. The resistive component and its activation energy decreased with increase in the relative humidity and the former was expressed as R=R* exp (-E/kT*) exp (E/kT) The pre-exponential factor R*, was hardly influenced by the humidity and decreased when the acidic protons were replaced with monovalent alkali cations. The activation energy of conduction was strongly affected by the degree of orientation and particle size of crystal with layered structure in a whole humidity region and increased by replacing the protons by alkali cations. © 1988 Chapman and Hall Ltd.
  • Humidity sensor composed of a microporous film of polyethylene-graft-poly-(2-acrylamido-2-methylpropane sulfonate), Y. Sakai, V. L. Rao, Y. Sadaoka, M. Matsuguchi, Polymer Bulletin, Polymer Bulletin, 19, 318, 1988/03, 0170-0839, 10.1007/BF00255390, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=34250097054&origin=inward
  • Effects of sorbed water on the dielectric constant of some cellulose thin films, Y. Sadaoka, M. Matsuguchi, Y. Sakai, K. Takahashi, Journal of Materials Science Letters, Journal of Materials Science Letters, 7, 2, 121, 124, 1988/02, 0261-8028, 10.1007/BF01730591, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0023962122&origin=inward
  • 18, 6, 501, 506, 1987/12, 0170-0839, 10.1007/BF00255333, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0023592580&origin=inward
  • 22, 10, 3685, 3692, 1987/10, 0022-2461, 10.1007/BF01161478, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0023437224&origin=inward
  • 22, 8, 2975, 2982, 1987/08, 0022-2461, 10.1007/BF01086500, https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0023399685&origin=inward

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  • 2019, the first semester, under graduate, 新入生セミナーA
  • 2019, the first semester, under graduate, 電気化学
  • 2019, the first semester, under graduate, 化学基礎Ⅰ
  • 2019, the first semester, master course, 物理化学特論Ⅱ
  • 2019, the first semester, master course, 応用化学特別講義Ⅰ
  • 2019, the first semester, master course, 応用化学特別講義Ⅱ
  • 2019, the first semester, master course, 応用化学セミナーⅡ
  • 2019, the first semester, master course, 技術英語プレゼンテーション

論文指導(B07)

  • 2017, 9, 0, 9, 2, 0, 0, 0, 0

論文審査(B10)

  • 2017年, 2, 2, 0, 0
  • 2016年, 0, 5, 0, 0

学外非常勤(B11)

  • 2017年, the first semester, 学校法人 すみれ学園 四国医療技術専門学校
  • 2017年, the first semester, (独)国立高等専門学校機構 新居浜高専


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