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1999 Fiscal Year Final Research Report Summary

香り識別センサの検討とミカンの香り識別システムの開発

Research Project

Project/Area Number 09555025
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Applied physics, general
Research InstitutionWakayama National College of Technology

Principal Investigator

FUJIMOTO Akira  Wakayama National College of Technology, Electrical Engineering Department, Professor, 電気工学科, 教授 (10238610)

Co-Investigator(Kenkyū-buntansha) HAYASHI Junjiro  Wakayama National College of Technology, Materials Science Department, Professor, 物質工学科, 助教授 (90280429)
TAKAGI Koichi  Wakayama National College of Technology, Materials Science Department, Professor, 物質工学科, 教授 (60111077)
Project Period (FY) 1997 – 1999
KeywordsTin Oxide / Gas Sensor / Molecular Orbital Theory / Smell Sensor
Research Abstract

Until now transient response and steady-state response characteristics of SnOィイD22ィエD2 gas sensor for the hydrogen and various alcohol molecules are examined, and it has been clarified that the discrimination of the smell using polarizability and second order polarizability of smell molecule. The reaction process between SnOィイD22ィエD2 cluster-surface and various gas molecules were simulated on the computer to examine the mechanism of the difference between smell and sensor response. It was shown that the heat of formation is the smallest in the case of lack of two oxygen atoms in the case of perpendicular planes of c-axis and lack of one oxygen atom in the case of perpendicular planes of a-axis. The reaction path of hydrogen, methanol and ethanol molecule and HィイD1+ィエD1, CHィイD3+(/)3ィエD3 and CHィイD23ィエD2CHィイD3+(/)2ィエD3 radicals on the SnOィイD22ィエD2 along a- and c-axis has been studied to estimate the activation energy. As a result the hydrogen and methanol molecule react to SnOィイD22ィエD2 surface with oxygen molecule on the surface. These suggest that the resistance change of SnOィイD22ィエD2 sensor for hydrogen is lager than methanol, which is agrees with experimental results. Much knowledge was given about reaction mechanism between SnOィイD22ィエD2 sensor and smell molecule.

  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] T. Kanashima, A. Fujimoto, and M. Okuyama: "Theoretical Analysis of Methanol and Hydrogen Adsorptions on SnO_2 by Molecular Orbital Calculation"The 10^<th> International Conference on Solid-State Sensors and Actuators, Digest of Technical Papers. Volume1. 154-157 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤本晶、金島岳、奥山雅則: "水素および種々のアルコールに対するガスセンサの応答特性"電気学会センサマイクロマシン準部門平成11年度総合研究会(平成11年11月),電気学会研究会資料. PS-99-1〜16. 1-6 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 金島岳、藤本晶、奥山雅則: "SnO_2(001)および(100)表面への水素およびアルコール吸着の分子軌道法解析"電気学会化学センサシステム研究所(平成11年9月),電気学会研究会資料. CS-99-28〜42. 67-72 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T. Kanashima, A. Fujimoto, and M. Okuyama: "Theoretical Analysis of Methanol and Hydrogen Adsorptions on SnO_2 by Molecular Orbital Calculation"Sensors and Actuators. B3236(印刷中). (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A. Fujimoto,: "Response of smell sensor for alcohol gases"8^<th> International Meeting on Chemical Sensors. (講演予定). (2000)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤本晶、金島岳、林純ニ郎、高木浩一、奥山雅則: "半導体ガスセンサの表面反応の解析"和歌山工業高等専門学校紀要. 第34号. 9-13 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 藤本晶、中前伸崇、西尾真明、市田哲、竿本有紀、岩本仁志、林純ニ郎、高木浩一: "半導体センサによる臭い識別の基礎的検討"和歌山工業高等専門学校紀要. 第33号. 7-12 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] T.Kanashima, A.Fujimoto and M.Okuyama: ""Theoretical Analysis of Methanol and Hydrogen Adsorptions on SnOィイD22ィエD2 by Melecular Orbital Calculation""The 10ィイD1thィエD1 International Conference on Solid-State Sensors and Actuators, Digest of Technical Papers. 1. 154-157 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Fujimoto, T.Kanashima, J.Hayashi, K.Takagi and M.Okuyama: ""A Study of Surface Reaction of Semiconductor Gas Sensor""Memoirs of Wakayama National College of Technology. 34. 9-13 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Fujimoto, N.Nakamae, M.Nishio, S.Ichida, Y.Saomoto, H.Iwamoto, J.Hayashi and K.Takagi: ""A Study of Discrimination of Odors by Using Semiconductor Gas Sensor""Memoirs of Wakayama National College of Technology. 33. 7-12 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T.Kanashima, A.Fujimoto and M.Okuyama: ""Theoretical Analysis of Alcohol and Hydrogen Adsorptions on SnOィイD22ィエD2 (001) and (100) Surfaces by Molecular Orbital Calculation""Papers of Technical Meeting on Chemical Sensors, IEE Japan. CS-99-40. 67-72 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Fujimoto, T.Kanashima and M.Okuyama: ""Response of Gas Sensor for Hydrogen and Alcohol Gases""Papers of Technical Meeting on Physical Sensors, IEE Japan. PS-99-1. 1-6 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Kanashima, A.Fujimoto and M.Okuyama: ""Theoretical Analysis of Methanol and Hydrogen Adsorptions on SnOィイD22ィエD2 by Molecular Orbital Calculation""to be published in Sensors and Actuators. B3236. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A.Fujimoto: ""Response of smell sensor for alcohol gases""to be published at 8ィイD1thィエD1 International Meeting on Chemical Sensors, Basel, Switzerland, July 2000..

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2001-10-23  

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