2020 Fiscal Year Final Research Report
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 |
Section | 一般 |
Review Section |
Basic Section 21060:Electron device and electronic equipment-related
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Research Institution | Japan Advanced Institute of Science and Technology |
Principal Investigator |
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Project Period (FY) |
2018-04-01 – 2021-03-31
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Keywords | Graphene / Gas sensor / Ammonia / Acetone / Mass sensing |
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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Free Research Field |
グラフェンガスセンサー
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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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