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- Title
Vertically Oriented Single-Wall Carbon Nanotube/Enzyme on Silicon as Biosensor Electrode.
- Authors
Yubing Wang; Iqbal, Zafar
- Abstract
Thin films of vertically aligned individual single-wall carbon nanotubes (SWNTs) were deposited on silicon using a chemical vapor deposition (CVD) process. Oriented SWNT growth was achieved by employing two methods of catalyst precursor self-assembly followed by ethanol CVD. Using the silicon substrate as the working electrode in an electrochemical cell and the enzyme β-NAD (nicotinamide adenine dinucleotide) synthetase dissolved in a buffered electrolyte solution, the enzyme was attached at the nanotube ends. This was shown using scanning electron microscopy and cyclic voltammetry. Enzyme immobilization on the 1 nm to 2 nm diameter tube ends of the individual SWNTs will allow for dense packing of the enzyme and utilization of the electrode as an enzymatic sensor in a biofuel cell configuration.
- Subjects
THIN films; NANOTUBES; CHEMICAL vapor deposition; ENZYMES; NICOTINAMIDE
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2005, Vol 57, Issue 6, p27
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-005-0132-z