2023 Fiscal Year Final Research Report
Study on growth control and mechanical properties of fullerene nanowhiskers
Project/Area Number |
21K04654
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 26020:Inorganic materials and properties-related
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Research Institution | Yokohama City University |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
鈴木 凌 横浜市立大学, 理学部, 助教 (70846708)
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Project Period (FY) |
2021-04-01 – 2024-03-31
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Keywords | フラーレン / ウィスカー / 弾性率 / 硬さ |
Outline of Final Research Achievements |
We have grown various types of fibrous solvated fullerene crystals, i.e., fullerene nanowhiskers (FNWs), by using the liquid-liquid interface precipitation method, and have clarified that they exhibit large elastic deformation not seen in bulk crystals. We found that the cages of fullerene molecules are destroyed by heat treatment in air. However, despite the destruction of the fullerene molecules, we found that the periodic structure of the crystal is maintained. Even more surprisingly, we found that the mechanical properties, i.e., the elastic limit strain and hardness, are even larger than those of the original solvated crystals. This indicates the formation of a new structure, and is expected to be developed into a new material in the future.
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Free Research Field |
材料科学
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Academic Significance and Societal Importance of the Research Achievements |
本研究ではフラーレン溶媒和結晶のユニークな力学特性を明らかにした。さらに、加熱処理の条件によって、フラーレンのケージが破壊しているにもかかわらず低次の周期性が保持されているようなユニークな構造体が形成されることを発見した。この構造体は、これまでの溶媒和構造より遥かに優れた弾性率と硬さを示すことがわかり、構造と物性との相関は学術的にも大変興味深いところである。また、この構造体は、新物質として力学特性だけでなく、その他の電気、光学的性質にも興味がもたれ、実用化に向けて社会的にも意義のある成果と言える。
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