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. 2000 Feb 1;97(3):1073–1078. doi: 10.1073/pnas.97.3.1073

Figure 2.

Figure 2

Schematic for the experimental setup. An inhomogeneous electric field is generated at the air–water interface by applying a potential V0 to an insulated tungsten wire. The radius of the insulated electrode is a, about 6 μm. The electric field strength perpendicular to the surface of the interface is denoted ɛ(r).