Note: Hybrid-π model and parameter extraction method for electrode-electrolyte interface characterization with superbly accurate reactance

• DOI: 10.1063/1.4997726
• Publication Date: 2017-08-09T15:13:03Z
• Authors: Yan Hong; Wang Ling Goh; Yong Wang
• Keywords: Reactance; Interface (matter); Characterization

This paper presents an equivalent circuit model for the electrode-electrolyte interface and aims at improving modeling accuracy of parasitic effects frequencies up to 300 MHz. Different from conventional model, electrode inductances, body loss capacitances, resistances are all included in proposed hybrid-π model. In addition, S-parameters obtained by a vector network analyzer innovatively used extract parameters frequency range 10 Hz Since reactance is proportional frequency, technique can precisely calculate higher frequencies. Verified experiments, better accuracies when fitted both phases magnitudes S11 S21. The superb this work beneficial biomedical applications that have interface.