Stabilizing effect of a magnetic field on a gas bubble produced at a microelectrode
Stabilizing effect of a magnetic field on a gas bubble produced at a microelectrode
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DOI：
10.1016/j.elecom.2012.01.016
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发表时间：
2012
影响因子：
5.4
通讯作者：
Dámaris Fernández;M. Martine;A. Meagher;Matthias E. Möbius;J. Coey
中科院分区：
文献类型：
--
作者：
Dámaris Fernández;M. Martine;A. Meagher;Matthias E. Möbius;J. Coey
研究了垂直于微电极表面的磁场对单个氢泡生长的影响。气泡的周期性生长和脱离引起的过电位振荡与高速摄像机图像相关联，并使用粒子跟踪来跟踪流动模式。在电场中，水平和垂直微电极上的气泡都会变得更大，直径在5特斯拉破裂之前会翻一番。这种效应与磁场对开断机制的影响有关，而与洛伦兹力驱动的埃克曼泵浦无关。
The effect on the growth of a single hydrogen bubble of a magnetic field oriented normal to the surface of a microelectrode is investigated. Overpotential oscillations due to periodic growth and detachment of bubbles are correlated with high-speed camera images and particle tracking was used to follow the flow pattern. The bubbles on both horizontal and vertical microelectrodes grow bigger in the field, doubling in diameter before they break away in 5Tesla. The effect is related to the influence of the magnetic field on the breakoff mechanism rather than to Ekman pumping driven by the Lorentz force.