Capacitive Coupling of Conducting Polymer Tattoo Electrodes with the Skin

Tattoo electronics is one of the emerging technologies in skin compliant biosensing. The growing interest their large application health monitoring raises several interrogations on how these sensors interface with skin. In this paper, bioimpedance at and ultra-conformable tattoo electrodes made conducting polymers are focused on. electrochemical characteristics differ from traditional gelled Ag/AgCl electrodes. modeling equivalent circuits different skin-electrode configurations proposes explanation biopotentials transduction mechanism. strong agreement between circuit model experimental values reveals capacitive coupling polymer where circuit's reflect electrodes’ physical characteristics. Additional studies underline an enhanced signal stability inter/intra-subject evaluations using dry tattoos beneficial for broad long-term recordings. This study provides a comprehensive skin/tattoo electrode model. understanding essential when designing next generation wearable biomonitoring devices imperceptible interfaces.