Controlled Patterning of Complex Resistance Gradients in Conducting Polymers with Bipolar Electrochemistry

Conducting polymers have gained considerable attention for the possible design of localized electroactive patterns microelectronics. In this work, authors take advantage properties polypyrrole, in synergy with a wireless polarization, triggered by bipolar electrochemistry, to produce resistance gradient patterns. The physicochemical modification is caused reduction and overoxidation which produces highly resistive regions at different positions along conducting substrate predefined locations. Due outstanding flexibility U-, S-, E-shaped electrodes can be formed prove-of-concept experiments, electrochemically modified order generate well-defined gradients. Energy-dispersive X-ray spectroscopy analysis samples confirms modifications. This approach presents as main advantages nature electrochemistry fine-tuning spatial distribution electrochemical modification, comparison more conventional patterning methods.