Carbon Interdigitated Array Nanoelectrodes for Electrochemical Applications
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- Carbon Interdigitated Array Nanoelectrodes for Electrochemical Applications
- Heo, J. I.; Shim, D. S.; Teixidor, G. Turon; Oh, S.; Madou, Mark; Shin, Heungjoo
- Issue Date
- ELECTROCHEMICAL SOC INC
- JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.158, no.3, pp.J76 - J80
- Redox current amplification has been demonstrated using carbon interdigitated array (IDA) nanoelectrodes derived from precursor polymer microstructures through conventional photolithography and pyrolysis. This simple conversion process, also known as carbon-microelectromechanical systems, enables nanometer-level fabrication of carbon materials in a reproducible and an economic manner. We demonstrated that with carbon IDA nanoelectrodes fabricated in two mask processes a current amplification factor of 25 can be obtained. This high amplification factor is a result of the efficient recycling of redox species between the 1:1 aspect ratio carbon nanoelectrodes. This type of a current amplification value is hard to obtain when using more traditional flat nanometer level spaced noble metal IDA electrodes fabricated with more expensive nanopatterning processes such as E-beam lithography.
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