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Published February 28, 2006 | Published
Journal Article Open

Electrochemical characterization of parylene-embedded carbon nanotube nanoelectrode arrays


A novel parylene-embedded carbon nanotube nanoelectrode array is presented for use as an electrochemical detector working electrode material. The fabrication process is compatible with standard microfluidic and other MEMS processing without requiring chemical mechanical polishing. Electrochemical studies of the nanoelectrodes showed that they perform comparably to platinum. Electrochemical pretreatment for short periods of time was found to further improve performance as measured by cathodic and anodic peak separation of K3Fe(CN)6. A lower detection limit below 0.1 µM was measured and with further fabrication improvements detection limits between 100 pM and 10 nM are possible. This makes the nanoelectrode arrays particularly suitable for trace electrochemical analysis.

Additional Information

© Institute of Physics and IOP Publishing Limited 2006. Received 20 July 2005, in final form 23 September 2005; Published 25 January 2006, Print publication: Issue 4 (28 February 2006) This work was supported by the Center for Cell Mimetic Space Exploration (CMISE), a NASA University Research, Engineering and Technology Institute (URETI), under award number NCC 2-1364. SPECIAL SECTION: SELECTED PAPERS FROM THE INTERNATIONAL CONFERENCE ON BIO-NANO-INFORMATICS FUSION (BNI FUSION 2005), MARINA DEL REY, CA. USA, 20–22 JULY 2005

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