A nano-sized Au electrode fabricated using lithographic technology for electrochemical detection of dopamine.

摘要: One big challenge of fabricating nanosensors for spatially resolved electrochemical detection neurochemicals, such as dopamine (DA), is the difficulty to assembly nanometer-scale patternable and integrated sensors. In this work we develop a novel approach precisely manufacture nano-Au-electrode (NAE) using lithographic fabrication technique, characterize NAE DA detection. A negative photoresist, SU-8, used substrate protection layer 127-nm Au active sensing layer. The cross surface morphology thickness are imaged by scanning electron microscopy an interference microscopy. This could be controlled, repeatedly fabricated conveniently renewed several times. sensitivity selectivity towards significantly higher than those standard thin-film electrode. demonstrates that attractive means electrochemically recording DA.