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. Author manuscript; available in PMC: 2006 Jun 23.
Published in final edited form as: Anal Chem. 2005 Jul 15;77(14):4667–4672. doi: 10.1021/ac0502302

Figure 1.

Figure 1

Schematic of the setup used for focused field pattern generation. A capillary electrode is filled with conducting medium and positioned close to the dielectric surface by using a micromanipulator. A current is applied over the electrode inside the capillary and a ground electrode placed in the bath. An electric field will then be obtained inside and outside the capillary electrode. If the distance between the rim of the capillary and the dielectric bottom of the cell bath is small enough, the electric field will be intensified under the rim. As the electric field is applied, compounds in the electrolyte are fed to the slit volume through electrophoresis.