| Project/Area Number |
21760127
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Fluid engineering
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| Research Institution | Toyohashi University of Technology |
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Principal Investigator |
ITO Takahiro Toyohashi University of Technology, 大学院・工学研究科, 助教 (00345951)
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| Project Period (FY) |
2009 – 2010
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| Project Status |
Completed (Fiscal Year 2010)
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| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Keywords | 混相流 / 濡れ / 接触角 / 接触線 / 表面張力 / 分子動力学 / 濡れ性 / 界面 |
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| Research Abstract |
The contact line behavior on rough surface and the transient effect of the contact line velocity on the dynamic contact angle are dominant phenomena for the motion of micro particle on the liquid surface. Molecular dynamics simulations and visualization experiments were performed to investigate the contact line behavior in these situations. The following results were obtained. First, the pinned effect of contact line at a step is reduced when the height of the step is less than the thickness of fluid-fluid interface. Second, the transient effect of the contact line velocity on the contact angle is not negligibly small even for the microscopic (~nm) dynamic contact angle when the step-like motion of the solid surface. Such transient effect also was also observed in the macroscopic (mm) experiment.
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