Measurements of force working on micro particles under surface tension gradient in liquid by using Atomic Force Microscope
| Project/Area Number |
15360405
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Metal making engineering
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| Research Institution | Kyusyu Institute of Technology |
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Principal Investigator |
WASAI Kyoko (2004) Kyusyu Institute of Technology, Department of Material Science, Research Associate, 工学部, 助手 (90128124)
向井 楠宏 (2003) 九州工業大学, 工学部, 教授 (60023173)
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| Co-Investigator(Kenkyū-buntansha) |
FURUKAWA Yoshinori Hokkaido University, Institute of Low Temperature Science, Associate Prof., 低温科学研究所, 助教授 (20113623)
TAMAGAWA Masaaki Kyusyu Institute of Technology, Graduate School of Life Science and Systems Engineering, Associate Prof., 大学院・生命体工学研究科, 助教授 (80227264)
和才 京子 九州工業大学, 工学部, 助手 (90128124)
趙 耀華 九州工業大学, 工学部, 助教授 (60315166)
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| Project Period (FY) |
2003 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥15,700,000 (Direct Cost: ¥15,700,000)
Fiscal Year 2004: ¥2,500,000 (Direct Cost: ¥2,500,000)
Fiscal Year 2003: ¥13,200,000 (Direct Cost: ¥13,200,000)
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| Keywords | Surface Tension Gradient / Particulate / Atomic Force Microscopy / Chemokine (Cytokine) / Neutrophile / 原子間力顕微鏡 / 微細黒鉛粒子 / 界面張力勾配駆動型運動 / 水 / 温度勾配下 / 沈降速度 / 原子間力プロープ顕微鏡 / 界面張力勾配力 / 直接測定 |
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| Research Abstract |
The aim of this research topic is to investigate the particulate motions from higher surface tension to lower surface tension in the liquid In case of working surface tension gradient on particulate in liquids. For this purpose, (1)the observation of particulate motions and measurement of surface tension gradient using Machzender interferometer, (2)measurement of feree worked on the particulate using atomic force microscopy(AFM), (3)theoretical consideration of Marangoni effect on the surface between liquid and gas are executed., (4)Effects of cytokine concentration gradient on chemotaxis of neutrophile (white blood cells)that is very similar phenomena to the particulate process under the surface tension gradient. The results of these topics are as follows :
(1)Sinking velocity of graphite particulate under temperature gradient (surface tension gradient) in water is smaller than that in isothermal water. The larger the size of the particulate is, the larger variance of sinking velocity becomes. Theoretical consideration can explain these facts.
(2)Effects of temperature gradient on worked force of the particulate is very small, and force on graphite particulate is larger than Polystyrene(PS) particulate.
(3)The motion of neutrophile by dropping cytokine liquid can be observed. Velocity from the lower concentration to higher concentration has maximum point in case of 10 ng/ml concentration dropping.
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Report
(3 results)
Research Products
(8 results)
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[Journal Article] 界面張力勾配による粒子の運動2005
Author(s)
小川尚久, 古川義純
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Journal Title
平成16年度低温研共同利用・日本結晶成長学会基礎部門合同研究会,2005年2月21-23日 北海道大学
Pages: 7-7
NAID
Description
「研究成果報告書概要(和文)」より
Related Report
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[Journal Article] 界面張力勾配を利用した鋼の脱酸方法の検討2004
Author(s)
和才京子, 篠崎信也, 向井楠宏, 高尾親弘, 宮村敏
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Journal Title
日本鉄鋼協会第148回秋季講演大会講演論文集(鉄鋼精錬プロセスへの界面物理化学的アプローチ-1) Vol.17
Pages: 821-821
NAID
Description
「研究成果報告書概要(和文)」より
Related Report
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