Thin film non-symmetric microelectrode array for impedance monitoring of human skin

This paper introduces a new thin film non-symmetric array of microelectrodes for impedance diagnostics and characterization of hydroscopic properties of human skin. Using a suitable design of the planar thin film electrode system we change an orientation of vector intensity of the electric field lines from transversal to longitudinal direction relative to the skin surface. Electrical properties of measured system and electrostatic field of interdigitated array (IDA) electrodes were simulated. With regard to theoretical and simulated analyses, the non-symmetric interdigitated arrays of electrodes were designed and fabricated. Non-symmetric IDA electrodes were tested in KCl solutions and applied for impedance monitoring of human skin. (C) 2003 Elsevier Science B.V. All rights reserved.