Electromagnetic micropores: fabrication and operation. Academic Article uri icon


  • We describe the fabrication and characterization of electromagnetic micropores. These devices consist of a micropore encompassed by a microelectromagnetic trap. Fabrication of the device involves multiple photolithographic steps, combined with deep reactive ion etching and subsequent insulation steps. When immersed in an electrolyte solution, application of a constant potential across the micropore results in an ionic current. Energizing the electromagnetic trap surrounding the micropore produces regions of high magnetic field gradients in the vicinity of the micropore that can direct motion of a ferrofluid onto or off of the micropore. This results in dynamic gating of the ion current through the micropore structure. In this report, we detail fabrication and characterize the electrical and ionic properties of the prepared electromagnetic micropores.

published proceedings

  • Langmuir

author list (cited authors)

  • Basore, J. R., Lavrik, N. V., & Baker, L. A.

citation count

  • 6

complete list of authors

  • Basore, Joseph R||Lavrik, Nickolay V||Baker, Lane A

publication date

  • December 2010