Electrochemical modeling and characterization of voltage operated channels in nano-bio-electronics

Massimo Longaretti, Bice Chini, Joseph W. Jerome, Riccardo Sacco*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


In this article, the electrical characterization of Voltage Operated ionic Channels (VOCs) in Nano-Bio-Electronics applications is carried out. This is one of the relevant steps towards a multi-physics description of hybrid bio-electronical devices such as bio-chips. Electrochemical ionic transport phenomena are properly modeled by a Poisson-Nernst-Planck partial differential system of nonlinearly coupled equations, while suitable functional iteration techniques for problem decoupling and finite element methods for discretization are proposed and discussed. Extensive numerical simulations of single species VOCs transporting K+ ions are performed to consistently derive an electrical equivalent representation of the channel and to quantitatively describe its interaction with an external measurement device under several working conditions.

Original languageEnglish (US)
Pages (from-to)49-56
Number of pages8
JournalSensor Letters
Issue number1
StatePublished - Feb 1 2008


  • ElectroPhysiology
  • Hybrid bio-artificial systems
  • Ionic channels
  • Ionic-electrical coupling
  • Mathematical modeling
  • Nanotechnology
  • Numerical simulation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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