Highly-accurate and self-powered environmental sensor based on integrated graphene NEMS-nano particles with signal amplification
| Project/Area Number |
18K04260
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21060:Electron device and electronic equipment-related
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| Research Institution | Japan Advanced Institute of Science and Technology |
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Principal Investigator |
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | Graphene / Gas sensor / Ammonia / Acetone / Mass sensing / Gas sensing / vdW bonding memory / Doping / Scattering / Charge neutrality point / グラフェンNEMS / センシングデバイス |
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| Outline of Final Research Achievements |
We reported the mass sensing of Hydrogen and Argon mixture gas using a top-gated graphene resonator. 1 μm length and 500 nm width GNEM resonator was fabricated and its resonant frequency was measured as 95.5 MHz with a Q factor of 45 in the vacuum condition of the chamber. The change in adsorbed molecule mass of ~886 zeptograms was measured with the pressure level change from 5.6x10-3 Pa to 6.2x10-3 Pa. Also, we showed that doping does not always dominate the graphene-molecule vdW complex interaction. Moreover, room temperature ammonia sensitivity of 100 parts-per-billion (ppb) in real air was successfully demonstrated in the activated carbon functionalized graphene field-effect transistor gas sensor.
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| Academic Significance and Societal Importance of the Research Achievements |
研究代表者らのグラフェン質量センサーは、軽量分子質量分析への応用の可能性を示している。さらに、グラフェンガスセンサーにおける最も弱い分子間メモリーは、ガス分子の同定のための方法を開発する際に特に有用である。また、研究代表者らの活性炭官能化グラフェンセンサーは、グラフェンの大気ドーピング制限を克服し、選択的大気アンモニアガス検出および同定を可能にする。したがって、これらのグラフェンセンサーは、環境および臨床用アンモニアガスセンサーに使用することができる。
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Report
(4 results)
Research Products
(21 results)
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[Presentation] High-Performance Graphene Sensors to Detect Silent Voices from Human Skins and Thunder Clouds2020
Author(s)
Manoharan Muruganathan, Osazuwa Gabriel Agbonlahor, Afsal Kareekunnan, Tatsufumi Agari, Sankar Ganesh Ramaraj, Hisashi Maki, Masashi Hattori, Kenichi Shimomai, Takeshi Kudo, Takeshi Maruyama, and Hiroshi Mizuta
Organizer
International Symposium on Silent Voice Sensing
Related Report
Int'l Joint Research / Invited
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