| Project/Area Number |
11680482
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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 |
プラズマ理工学
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| Research Institution | Nagoya University |
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Principal Investigator |
SHOJI Tatsuo Nagoya University, Energy Engineering and Science, Associate Professor, 工学研究科, 助教授 (50115581)
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| Co-Investigator(Kenkyū-buntansha) |
SAKAWA Yoichi Nagoya University, Energy Engineering and Science, Associate Professor, 工学研究科, 助手 (70242881)
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| Project Period (FY) |
1999 – 2000
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| Project Status |
Completed (Fiscal Year 2001)
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| Budget Amount *help |
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2000: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1999: ¥1,900,000 (Direct Cost: ¥1,900,000)
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| Keywords | Strongly coupled plasmas / qoulomb solid / phase transition / colloid / maqnetizen fine paticles |
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| Research Abstract |
A simple two-dimensional (2-D) strongly coupled one-component plasma system has been developed by confining charged fine particles on oil surface.
The fine silica (SiO_2 particles placed on the bottom of concave electrode where silicon oil is filed are charged up by applying a voltage with respect to the upper glass electrode which is coated by electro-conductive film (ITO). The particles move upward by the electric field between the electrodes and confined on the oil surface by the surface tension.
This new system has several advantages in studying 2-D Coulomb solidification compared with the colloidal suspension in a water: the charge of the particles can be easily controlled by the voltage, the number of impurity ions which shield out the Coulomb potential can be reduced in the insulating oil.
We observed the long time evolution of Coulomb crystal growth and the development of defect and dislocation in the crystal. We also study the effect of magnetic dipole interactions among particles by using Ni coated fine particles.
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