Abstract
Two common capillary phenomena that have been investigated are the thermocapillary and the solutocapillary phenomena where the interfacial tension is a function of the temperature and surface concentrations, respectively. This article will focus on a lesser-known capillary phenomena: electrocapillarity. Electrocapillarity occurs when an electric field is applied tangentially to an electrically charged interface, and is a natural extension of the two better known capillary flows. The first section of this paper will compare the thermodynamic derivation of electrocapillarity and the electric Maxwell stress tensor. It will be shown that these two seemingly different phenomena are actually the same. The remaining sections will include several reasonably simple experiments that demonstrate electrocapillary flows under different situations.
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Johnson, D. (2003). Electrocapillary Flows. In: Narayanan, R., Schwabe, D. (eds) Interfacial Fluid Dynamics and Transport Processes. Lecture Notes in Physics, vol 628. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-45095-5_14
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DOI: https://doi.org/10.1007/978-3-540-45095-5_14
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