Experiments on Active Control of Microbubble Motion by Electric or Magnetic Field

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  • 電界と磁界によるマイクロバブル挙動の能動制御実験
  • デンカイ ト ジカイ ニ ヨル マイクロバブル キョドウ ノ ノウドウ セイギョ ジッケン

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Abstract

<p>　　　Active control of motion of microbubbles by using electric or magnetic fields is experimentally investigated. Cationic surface active agent was dissolved to water to add positive electric charge to the surface of the microbubbles. These electrified microbubbles are successfully moved by artificially applied electric field to direction of the negative electrode. Magnetic particles were further adhered to the surface of the electrified microbubbles to add magnetism to the microbubbles. These magnetized microbubbles are successfully moved towards electro magnet. Control of microbubbles that flow with water stream in bifurcating channel are attempted next. By placing positive and negative electrodes at both side of the bifurcating channel, the electrified microbubbles are successfully guided through one side of the channel. The magnetized microbubbles are also able to be guided through the one side of the channel by electro magnet that is placed at the bifurcation of the channel. From the above, it is confirmed that the motion of microbubbles can be actively controlled by electric and magnetic fields.</p>

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