| Project/Area Number |
21H01386
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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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 |
MURUGANATH AN.M 北陸先端科学技術大学院大学, 先端科学技術研究科, 講師 (20639322)
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| Co-Investigator(Kenkyū-buntansha) |
KAREEKUNNAN Afsal 北陸先端科学技術大学院大学, 先端科学技術研究科, 特任助教 (90910779)
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| Project Period (FY) |
2021-04-01 – 2023-03-31
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| Project Status |
Discontinued (Fiscal Year 2022)
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| Budget Amount *help |
¥15,600,000 (Direct Cost: ¥12,000,000、Indirect Cost: ¥3,600,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥10,140,000 (Direct Cost: ¥7,800,000、Indirect Cost: ¥2,340,000)
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| Keywords | Random Telegraphy Signal / Charge Neutral Point / Suspended Graphene / Lock-in measurements / Random-Telegraph-Signal / Graphene sensor / 1/f Noise spectrum / Random Telegraph Signals / Gas sensing / Graphene / Nanocavity / 1/f noise |
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| Outline of Research at the Start |
This project aims to demonstrate one-by-one gas molecules sensing by the sub-micro-sec Random-Telegraph-Signal (RTS) measurements, the time-domain histogram, and frequency-domain 1/f spectrum analyses. For this purpose, the nanocavities will be integrated with the suspended graphene channel.
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| Outline of Annual Research Achievements |
Resistance Versus time measurements was performed in a vacuum of 6 mTorr, and oxygen was introduced at a rate of 100 sccm in the chamber. It was noticed that the noise increases as Oxygen are introduced, which can be confirmed by looking at the standard deviation in windows of 10 seconds, as a function of time. A sudden increase in the standard deviation around 250 seconds (equivalent to a pressure of 370 Torr) was noticed. By comparing the time series in a vacuum (6 mTorr) and in an oxygen environment (400 Torr), it becomes clear that the increase in noise is caused by the emergence of random telegraphy signal (RTS), where the resistance randomly oscillates between a state with higher resistance (up-state) and one with lower resistance (down state).
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| Research Progress Status |
令和4年度が最終年度であるため、記入しない。
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| Strategy for Future Research Activity |
令和4年度が最終年度であるため、記入しない。
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