Microelectrode arrays demonstrated an attractive behavior relate to macroelectrodes, as they can produce voltammetric responses of similar magnitude to their macro counterparts, but with a considerably less capacitive/background current. Hence, they have found an increasing use in electroanalytical sensing devices. Recently, some researches were focused on designing new types of sensing-arrays that employed micro/nanoelectrodes in both regular and random distributions [1,2]. These structures, due to their many advantageous properties, including low background charging currents, large current density related to convergent diffusion and importantly small diffu