2021 Fiscal Year Research-status Report
Functionalized-graphene sensor on the hydrophobic surface for the selective detection of ppb-level volatile organic compounds (VOCs)
| Project/Area Number |
21K14510
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| Research Institution | Japan Advanced Institute of Science and Technology |
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Principal Investigator |
RAMARAJ SankarGanesh 北陸先端科学技術大学院大学, 先端科学技術研究科, 研究員 (20896295)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | Graphene / Ethanol / Activated carbon |
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| Outline of Annual Research Achievements |
We have fabricated a CVD graphene ribbon (GNR) and carbon molecular sieve (CMS) functionalised graphene-based FET gas sensor. The experimental procedure demonstrates the difference in the charge neutrality point of graphene in a particular gas environment. The CMS-functionalised GNR FET (CMSF-GFET) showed a sensitivity of 50 ppb. We have identified that the activated carbon act as an amplifier to enhance the gas sensing response. The dependence of this charge transfer on the applied tuning voltage was investigated using the charge neutrality point disparity (CNPD) method.
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
We are carrying out different method to avoid adsorption of oxygen and water molecules on the surface of graphene. We also studying the effect of surface functionalization with different nanoparticle.
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| Strategy for Future Research Activity |
In the next phase of research work, We have planned to functionalize the graphene different nanoparticles in order to improve the gas sensing. We will also find out a better nanoparticle in term of selectivity and sensitivity towards particular gas moleucle (eg. Ethanol, Acetone).
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Research Products
(8 results)
