Title:
GAS SENSOR AND GAS SENSOR STRUCTURAL BODY
Document Type and Number:
WIPO Patent Application WO/2014/104156
Kind Code:
A1
Abstract:
Provided are a gas sensor and a gas sensor structural body that have a simple configuration and that are capable of improving gas detection sensitivity over the prior art. By providing graphene (8) within an ionic liquid (L) between a source electrode (3) and a drain electrode (4), a change in the charge state within the ionic liquid (L) that is caused by the absorption of gas is directly reflected in the source-drain current (lsd) that flows through the graphene (8), thus making it possible to improve gas detection sensitivity over the prior art. Furthermore, by simply arranging the graphene (8) within the ionic liquid (L), a configuration wherein a plurality of polymers are used to perform surface chemical modification of a carbon nanotube as in the prior art is no longer necessary, thus making it possible to simplify the configuration accordingly.
Inventors:
SHIMOYAMA ISAO (JP)
MATSUMOTO KIYOSHI (JP)
TAKEI YUSUKE (JP)
INABA AKIRA (JP)
YOO KWANGHYUN (JP)
HONDA MASAHITO (JP)
IMAMOTO HIROSHI (JP)
MATSUMOTO KIYOSHI (JP)
TAKEI YUSUKE (JP)
INABA AKIRA (JP)
YOO KWANGHYUN (JP)
HONDA MASAHITO (JP)
IMAMOTO HIROSHI (JP)
Application Number:
PCT/JP2013/084795
Publication Date:
July 03, 2014
Filing Date:
December 26, 2013
Export Citation:
Assignee:
UNIV TOKYO (JP)
OMRON TATEISI ELECTRONICS CO (JP)
OMRON TATEISI ELECTRONICS CO (JP)
International Classes:
G01N27/00; G01N27/12; C01B31/02
Domestic Patent References:
| WO2013105449A1 | 2013-07-18 |
Foreign References:
| JP2011061046A | 2011-03-24 | |||
| JP2008216083A | 2008-09-18 | |||
| JP2007505323A | 2007-03-08 |
Other References:
N.KIGA ET AL.: "CNT-FET gas sensor using a functionalized ionic liquid as gate", MICRO ELECTRO MECHANICAL SYSTEMS (MEMS), 2012 IEEE 25TH INTERNATIONAL CONFERENCE, February 2012 (2012-02-01), pages 796 - 799, XP032137367
IDDO HELLER ET AL.: "Influence of Electrolyte Composition on Liquid-Gated Carbon Nanotube and Graphene Transistors", J.AM.CHEM.SOC., vol. 132, 2010, pages 17149 - 17156, XP055199579
MASAHITO HONDA ET AL.: "Low- power -consumption C02 gas sensor using ionic liquids for green energy management", PROCEEDINGS OF IEEE SENSORS 2012, October 2012 (2012-10-01), pages 1 - 4, XP032309006
K.ISHIZU ET AL.: "Carbon dioxide detection by surface plasmon resonance with ionic liquid", MICRO ELECTRO MECHANICAL SYSTEMS (MEMS), 2012 IEEE 25TH INTERNATIONAL CONFERENCE, February 2012 (2012-02-01), pages 784 - 787, XP032137364
GANHUA LU ET AL.: "Gas detection using low-temperature reduced graphene oxide sheets", APPLIED PHYSICS LETTERS, vol. 94, 2009, pages 083111 - 1 - 083111-3, XP012119226
A. STAR; T. R. HAN; V. JOSHI; J. C. P. GABRIEL; G. GRUNER: "Nanoelectronic Carbon Dioxide Sensors", ADVANCED MATERIALS, vol. 16, no. 22, 2004, XP002480061, DOI: doi:10.1002/adma.200400322
See also references of EP 2940462A4
IDDO HELLER ET AL.: "Influence of Electrolyte Composition on Liquid-Gated Carbon Nanotube and Graphene Transistors", J.AM.CHEM.SOC., vol. 132, 2010, pages 17149 - 17156, XP055199579
MASAHITO HONDA ET AL.: "Low- power -consumption C02 gas sensor using ionic liquids for green energy management", PROCEEDINGS OF IEEE SENSORS 2012, October 2012 (2012-10-01), pages 1 - 4, XP032309006
K.ISHIZU ET AL.: "Carbon dioxide detection by surface plasmon resonance with ionic liquid", MICRO ELECTRO MECHANICAL SYSTEMS (MEMS), 2012 IEEE 25TH INTERNATIONAL CONFERENCE, February 2012 (2012-02-01), pages 784 - 787, XP032137364
GANHUA LU ET AL.: "Gas detection using low-temperature reduced graphene oxide sheets", APPLIED PHYSICS LETTERS, vol. 94, 2009, pages 083111 - 1 - 083111-3, XP012119226
A. STAR; T. R. HAN; V. JOSHI; J. C. P. GABRIEL; G. GRUNER: "Nanoelectronic Carbon Dioxide Sensors", ADVANCED MATERIALS, vol. 16, no. 22, 2004, XP002480061, DOI: doi:10.1002/adma.200400322
See also references of EP 2940462A4
Attorney, Agent or Firm:
YOSHIDA TADANORI (JP)
Yoshida Justice (JP)
Yoshida Justice (JP)
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