2017 Fiscal Year Final Research Report
Nanoscale Observation of Liquid-Gas Phase Change Using Transmission Electron Microscopy
| Project/Area Number |
16K14174
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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 |
Thermal engineering
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
生田 竜也 九州大学, 工学研究院, 技術専門職員 (70532331)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | ナノバブル / 不均質核生成 |
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| Outline of Final Research Achievements |
This study investigated the generation and growth of nanobubbles using liquid cell electron microscopy. We developed the Fresnel fringe method, which enables us to determine the location of bubble interface in transmission electron microscopy (TEM) observation. It was found that heterogeneous nucleation is the major mechanism even in the thin water of 600 nm thickness. Hydrophilized carbon nanotubes were also tested and water film adhering to most of the inner wall surface was observed. Also, suspended ultrathin water films were found inside the CNT. The stability of these water films is attributed to the additional molecular interactions in the carbon nanotubes.
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| Free Research Field |
マイクロナノ熱工学
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