| Project/Area Number |
26400424
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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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| Research Field |
Biological physics/Chemical physics/Soft matter physics
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| Research Institution | Asahikawa Medical College |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
NONOMURA Yoshimune 山形大学, 大学院・理工学部, 教授 (50451662)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 濡れ現象 / 超撥水表面 / ロータス効果 / 水滴の跳ね返り / 浸透現象 / ソフトマターの物理一般 / 昆虫と植物の生態 / 昆虫や植物の生態 / バイオミメティクス |
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| Outline of Final Research Achievements |
We have tried to understand wetting phenomena on the surfaces of living matter such as plants, insects and animals from the viewpoints of static wetting and dynamic wetting. Actually, we have observed penetration of a water droplet into a hydrophobic cylindrical pore, rolling water droplets on lotus leaf, bouncing phenomena of water droplets on lotus leaf, and so on. To understand these phenomena, we found that several factors are essentially important. The factors are surface energy and interfacial energy of a water droplet, potential energy of a water droplet, pinning energy applied to a water droplet due to surface structure, energy dissipation due to viscosity in a water droplet, Laplace pressure due to surface structures and dynamic pressure generated by the impact of a water against a substrate. The semi-quantitative discussion based on the comparison between these factors allows us to understand the wetting phenomena on the surfaces of plants, insects and animals.
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