| Project/Area Number |
20K15132
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 28030:Nanomaterials-related
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| Research Institution | Toyota Technological Institute |
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Principal Investigator |
kanishka DeSilva 豊田工業大学, 工学(系)研究科(研究院), ポストドクトラル研究員 (20870182)
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Project Status |
Discontinued (Fiscal Year 2022)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | Graphene oxide / Graphene / Restoration / TERS / Raman spectra / High-quality RGO / Defect restoration / Reduction / C-AFM / Tiling method / CH4 plasma / Graphene Oxide / Atomic Force Microscopy |
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| Outline of Research at the Start |
Current research proposal focuses on revealing the lattice defects present in graphene oxide and its restoration by nanoscale imaging using tip enhanced Raman spectroscopy (TERS). Nanoscale imaging of the distribution of lattice defects and restored areas in GO and reduced GO would give better details on the restoration process. TERS is a powerful nanoscale chemical imaging technique with high spatial resolution. Therefore, the study of restoration of lattice defects using TERS will be a turning point in the graphene sector, which is the scope of this research proposal.
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| Outline of Annual Research Achievements |
During this final year, the applicant could achieve relatively good progress in research work. Directly related to the KAKENHI proposal, one paper as the 1st author and two papers as the co-author were published.
First of all, continuous monolayer graphene oxide (GO) films were fabricated on substrates and reduced via a combined chemical and thermal reduction method to obtain highly reduced and conductive graphene films. Defect restoration was achieved through ethanol-assisted thermal annealing.
Secondly, TERS probes with good enhancement factor were developed via a UV-ozone and chemical reduction method, which has good reproducibility and durability. They work very well under gap mode, yet not good enough for non-gap mode. So, graphene films transferred to Au substrate via PDMS-stamping.
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