Effect of external electric field on liquid film confined within nanogap

Effect of external electric field on liquid film confined within nanogap
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外部电场对纳米间隙内液膜的影响

DOI:
10.1063/1.2917373
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发表时间:
2008-05
影响因子:
3.2
通讯作者:
Lu XC
Lu XC
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Xie GX;Luo JB;Guo D;Zhang CH;Liu SH;Lu XC

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描述了外加电场对高度抛光的钢球和光滑的玻璃盘之间纳米间隙内的液体薄膜的强烈和可重复性的影响。在电场作用下,在接触区边缘观察到微气泡。这一现象在极性液膜中比在非极性液膜中更为明显。较强的电场使接触区域的薄膜厚度最初减小,然后变化变得小得多。当球被施加正EEF时,微泡的出现随着时间的推移是稳定的,而随着时间的推移微泡的出现变得少得多。对这些实验现象的不同机制进行了讨论。
A strong and reproducible effect of an external electric field (EEF) on liquid films confined within a nanogap between a highly polished steel ball and a smooth glass disk is described. Induced by the EEF, microbubbles were observed at the edge of the contact region. This phenomenon is more obvious in polar liquid films than that in nonpolar ones. A stronger EEF causes a decrease in the film thickness in the contact region initially, and then the variation becomes much smaller. When the ball is applied with a positive EEF, the emergence of microbubbles is stable over time, while it becomes much less as time progresses. Different mechanisms of these experimental phenomena have been discussed.
DOI: 10.1088/0022-3727/39/2/018
发表时间: 2005-03
期刊: Journal of Physics D: Applied Physics
影响因子: --
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