2014 Fiscal Year Final Research Report
Experimental Study of Anomalies of Waters Flowing through Micro Channels
| Project/Area Number |
23560189
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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 |
Fluid engineering
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| Research Institution | Niigata College of Technology (2014)
Niigata University (2011-2013) |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
NARUMI Takatsune 新潟大学, 自然科学系, 教授 (20143753)
USHIDA Akiomi 新潟大学, 自然科学系, 助教 (10582976)
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| Project Period (FY) |
2011-04-28 – 2015-03-31
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| Keywords | マイクロチャネル / 水 / 流動停止 / 膜 / 電荷 / 空気 / 合成 / 有機物 |
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| Outline of Final Research Achievements |
We report anomalies in water flows through micro-orifices using several kinds of water at applied pressures of 50-1000 Pa. The flow decreased with elapse time and stopped finally. The flow velocities were smaller on average for ultra pure water than for tap water. Membranes were frequently formed when the flow stopped. Electrically grounded orifices provided higher flow rates and smaller rates of membrane formation. The membrane was found to come from the air dissolved in water. It was clarified by Raman and IR spectroscopy that the membrane was composed of organic matters. It was suggested by UV-irradiation that the organic matter was synthesized from inorganic matters of the air dissolved in water through micro-orifices.
In conclusion, organic matters were synthesized in micro-orifices from the inorganic components which came from the dissolved air, by the action of the charges which were generated in the flow. This result may have implications for the origin or evolution of life.
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| Free Research Field |
流体工学
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