A system of freestanding superparamagnetic iron oxides nanoparticle membranes was formed on the gold disc electrode and coated with the polythiophene Langmuir-Blodgett film. The electrode surface was profiled in magnetic field, where the electrode surface was patterned with microsized pinholes formed from corrupted freestanding membranes. The prepared electrode with zones of different electrode activity shows compelling properties, expressive sharp responses of copper reaction were obtained by both the voltammetry and voltcoulometry utilising the multipoint analysis principles in the transient charge processing. (c) 2012 Elsevier B.V. All rights reserved.