Focused electric field-induced ion transport: Experiments and modeling

Andrey V. Semichaevsky, Harley T. Johnson, Khiam How Low, Dibyadeep Paul, Abhijit Chandra, Ashraf Bastawros

Research output: Contribution to journalArticlepeer-review


An approach to the microscale patterning of metal surfaces called "focused electric field-induced ion transport" (FEFIIT) is introduced. This process is a modification of the noncontact through-mask electrochemical etching method, in which an ion-selective membrane separates the anodic and cathodic electrolyte volumes. The membrane allows for a low metal ion concentration near the anode. The electric field near the workpiece can be modified by means of a perforated insulated mask parallel to the membrane surface. The performance of the FEFIIT process is studied both experimentally and computationally. Recommendations for process improvement are provided.

Original languageEnglish (US)
Pages (from-to)D100-D103
JournalElectrochemical and Solid-State Letters
Issue number12
StatePublished - 2010

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Electrochemistry
  • Electrical and Electronic Engineering

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