A novel method of creating ordered arrays of purified SWNTs with minimal defect density has been exploited to attain a higher level of control over the reproducibility of SWNT networks.  This method uses unidirectional airflow to deposit SWNTs from aqueous suspensions onto various surfaces without allowing bundle formation during the deposition process.  This facilitates the formation of a network with an inter-SWNT spacing that exceeds the electrochemical diffusion layer for each nanotube.  Under these conditions, the current is increased due to the increased surface area of the electrode, yet the 2-D network retains the enhanced properties expected of nanoscaled electrodes; namely enhanced diffusion, and reduced capacitance.  This will allow greater S/N ratios in trace analysis.  The electrochemical behavior of these networks has been investigated with the impetus of reducing the inherent inter-SWNT and SWNT/metal electrode contact resistance in order to form more efficient electronic materials.

Electrochemical routes to the reduction of resistance in single-walled carbon nanotube networks

243rd National Meeting (2012)

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