| Project/Area Number |
21K03782
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 18010:Mechanics of materials and materials-related
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| Research Institution | Okinawa Institute of Science and Technology Graduate University |
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Principal Investigator |
Janssens Stoffel 沖縄科学技術大学院大学, 力学と材料科学ユニット, グループリーダー (00817629)
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| Co-Investigator(Kenkyū-buntansha) |
フリード エリオット 沖縄科学技術大学院大学, 力学と材料科学ユニット, 教授 (70735761)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Project Status |
Completed (Fiscal Year 2023)
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| Budget Amount *help |
¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
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| Keywords | wrinkling / nanocrystalline diamond / femtosecond laser / nanochannel / nanofluidics / delamination / diamond / laser / glass / etching / thin films |
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| Outline of Research at the Start |
The effect of boundary curvature on the wrinkling of a thin suspended film, such as eardrums and plant leaves, is poorly understood. To captures the main physical ingredients that explain this effect, methods for the microfabrication of suspended diamond films that in a controlled way mimic such systems will be developed together with a theoretical model. The final goal is to advance our fundamental understanding of wrinkling phenomena but also provide a foundation for advancing various applications, such as the design of devices with functional wrinkles, and to understand natural phenomena.
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| Outline of Final Research Achievements |
This project was undertaken for the purpose of wrinkle research. During the course of this research, we accidentally discovered a technique for fabricating optically accessible nanochannels of arbitrary length using a femtosecond laser. These nanochannels are formed between a thin film of nanocrystalline diamond and a glass substrate, their cross-section resembles a slit with a width-to-height ratio of approximately 100, and their height can be precisely tuned at less than 100 nm. We were able to elucidate the laser processing mechanism that creates the channels, and we were able to demonstrate film patterning using the same technique. To validate the applicability of this research, we have developed nanofluidic devices that do not require the use of complex, costly, and time-consuming fabrication techniques.
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| Academic Significance and Societal Importance of the Research Achievements |
The project is of fundamental scientific significance for various applications, such as designing nanofluidic devices for biomolecule detection.
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