| 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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| 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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