レーザー誘起キャビテーションバブルとそのナノ材料創成への役割

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  • SASAKI Koichi
    Division of Quantum Science and Engineering, Hokkaido University

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  • Laser-Induced Cavitation Bubble and its Role in Syntheses of Nanomaterials
  • レーザー ユウキ キャビテーションバブル ト ソノ ナノ ザイリョウ ソウセイ エ ノ ヤクワリ

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Abstract

It has been shown that cavitation bubbles play essential roles in syntheses of nanoparticles by laser ablation in liquids. The growth of nanoparticles inside the cavitation bubble was observed by a laser light scattering experiment. The structure of synthesized nanoparticles was affected by the dynamics of the cavitation bubble, indicating that nanoparticles were exposed in the high-pressure, high-temperature reaction field of the collapsed cavitation bubble. In addition, an experiment carried out rather recently suggests that the cavitation bubble stores significant amount of electrical charges.

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