Control of interface behavior by electrocapillary flow

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K18011
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Fluid engineering
• Research Institution: Yokohama National University
• Principal Investigator: Yano Taishi 横浜国立大学, 大学院工学研究院, 助教 (50768679)
• Research Collaborator: NISHINO Koichi
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 対流 / 表面張力 / 界面張力 / 電気毛管効果 / 不安定性 / 液滴 / 液膜

Outline of Final Research Achievements

The purposes of this study are to understand the characteristics of surface-tension-driven flow due to electrocapillarity, and to control the interface behavior using the electrocapillary flow. (1) The effect of electrostatic fields on the interfacial tension between silicone oil and sodium carbonate aqueous solution is studied by comparing the drop shapes obtained experimentally and theoretically, i.e., axisymmetric drop shape analysis technique. (2) The velocity distribution of electrocapillary flow along the interface between silicone oil and water is measured with particle image velocimetry. (3) The deceleration of thermocapillary flow in a hanging droplet is realized by applying voltage.

Free Research Field

流体工学，熱工学