2012 Fiscal Year Final Research Report
Control of graphene properties based on atomic structure design on substrate surfaces
| Project/Area Number |
23656029
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Thin film/Surface and interfacial physical properties
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| Research Institution | Yokohama National University |
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Principal Investigator |
OGINO Toshio 横浜国立大学, 大学院・工学研究院, 教授 (70361871)
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| Project Period (FY) |
2011 – 2012
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| Keywords | グラフェン / ナノカーボン / 表面界面基板 / 酸化物単結晶 / ポーラスアルミナ / 原子間力顕微鏡 / ラマン分光 |
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| Research Abstract |
We investigated structure of the interfacial water layers between graphene sheets and a sapphire substrate by observing them through graphene sheets at room temperature. When graphene sheets were deposited at a low relative humidity, the interfacial water layers appeared as small islands. This study shows that the electrical properties of graphene sheets are tunable by controlling the hydrophilicity of substrate surfaces. For bandgap opening, we attached monolayer graphene sheets grown by chemical vapor deposition to porous alumina membranes with ordered hexagonal pores. We confirmed that strains are introduced into the graphene sheets. Porous alumina membranes are useful for strain engineering of graphene sheets.
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