Carbon nanotube integrated 3-dimensional carbon microelectrode array by modified SU-8 photoresist photolithography and pyrolysis

An integration strategy is devised for a reliable and scalable assembly of carbon nanotubes in photoresist-derived glassy-like carbon microelectrodes. The approach involves UV photolithography process with carbon nanotube monodispersed photoresist followed by high temperature pyrolysis process, and is versatile in yielding various 3-dimensional micro-nano integrated carbon microelectrode arrays. The morphology of the micro-nano integrated structures is characterized. The integrated microelectrodes demonstrate better electrical performance than the blank microelectrodes, showing potential applications in high-sensitive chemical and biological detection systems. The developed method represents a low-cost and facile way to mass production of carbon nanotube-integrated carbon microelectrode array. (C) 2011 Elsevier B.V. All rights reserved.