| Project/Area Number |
23655066
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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 |
Analytical chemistry
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| Research Institution | Osaka University |
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Principal Investigator |
SUWA Masayori 大阪大学, 理学研究科, 助教 (90403097)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 微粒子分析 / 磁気泳動 / 電子スピン共鳴 / 常磁性磁化率 / 微小作用力 / マイクロ微粒子 / 磁気泳動法 / 磁化率 / 常磁性イオン / ラジカル / マイクロ粒子 / 常磁性 |
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| Research Abstract |
We have examined to detect electron spin resonance (ESR) in a micro-particle by using magnetophoresis, which is migration phenomenon under an inhomogeneous magnetic field. Magnetophoretic velocity of micro-droplets of manganese dichloride aqueous solution dispersed in an organic liquid was measured with irradiation of microwave, whose frequency was from 0.1 GHz to 20 GHz. As a result, slight decrease of magnetophoretic velocity only at the position where the magnetic field met the condition of ESR was observed. Therefore, it was suggested that ESR in micro-particle could be detected from the decrease of the magnetic susceptibility. However, the region where the velocity decreased was broader than that expected. More detailed discussion about the spatial distribution of microwave power should be discussed, and more effective method for irradiation is essential for clear observation of ESR by magnetophoresis.
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