2011 Fiscal Year Final Research Report
Development of interface-urrent measuring method and study of driving mechanism of electro-smotic flow
| Project/Area Number |
21560168
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | Nagoya Institute of Technology |
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Principal Investigator |
KITOH Osami 名古屋工業大学, 大学院・工学研究科, 特命教授 (10093022)
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| Co-Investigator(Kenkyū-buntansha) |
USHIJIMA Tatsuo 名古屋工業大学, 大学院・工学研究科, 准教授 (50314076)
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| Project Period (FY) |
2009 – 2011
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| Keywords | マイクロ流路 / 電気浸透流 / 界面電流 / 電気二重層 |
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| Research Abstract |
The interface-current, an ionic motion within the electric double layer(EDL) of a solid-liquid interface, drives the electroosmotic flow in a micro channel. The thickness of the EDL is so thin, order of lOnm that direct measurement of the current is quite difficult. Using a variable gap micro-channel together with a diffuse double layer model, the interface-current can be measured correctly. From the pure water experiment, the temperature rise within EDL due to the Joule heating of the current is shown to be 4-6 degree. It was also shown that the ionic mobility of H^+ in EDL is extremely increased, perhaps due to the structure change of the water molecule there.
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