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Link to original content: http://pubmed.ncbi.nlm.nih.gov/19775126/
Electrical connectivity in single-walled carbon nanotube networks - PubMed Skip to main page content
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. 2009 Nov;9(11):3890-5.
doi: 10.1021/nl9020914.

Electrical connectivity in single-walled carbon nanotube networks

Peter N Nirmalraj  1 , Philip E Lyons, Sukanta De, Jonathan N Coleman, John J Boland
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Electrical connectivity in single-walled carbon nanotube networks

Peter N Nirmalraj et al. Nano Lett. 2009 Nov.

Abstract

Transport in single-walled carbon nanotubes (SWCNTs) networks is shown to be dominated by resistance at network junctions which scale with the size of the interconnecting bundles. Acid treatment, known to dope individual tubes, actually produces a dramatic reduction in junction resistances, whereas annealing significantly increases this resistance. Measured junction resistances for pristine, acid-treated and annealed SWCNT bundles correlate with conductivities of the corresponding films, in excellent agreement with a model in which junctions control the overall network performance.

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