FIGURE 1.

Schematic of coating approaches used for addressing the limitations of metallic electrodes. (A) aligned carbon nanotubes on metallic electrodes; (B) conductive polymers electrodeposited on metallic electrodes; (C) hydrogels polymerised to coat electrode site and device; (D) interpenetrating network of conductive polymer grown through hydrogel coating to form conductive hydrogel over electrode sites; (E) electrode site coated with biologically active molecules; (F) schematic of ideal tissue engineered interface incorporating combined coating approaches of conductive polymers, hydrogels and attachment factors with neural cells.