Effects of gas adsorption and collisions on electrical transport in single-walled carbon nanotubes

G. U. Sumanasekera, C. K.W. Adu, S. Fang, P. C. Eklund

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Abstract

The effects of gas adsorption and collisions on the thermopower and resistivity of mats of tangled single-walled nanotube (SWNT) bundles were studied. SWNT samples were prepared by lightly pressing the fibrous powder into thin pellets or mats. Thermoelectric (S) data were collected using a heat pulse technique. The four-probe resistance (R) was measured in a van der Pauw geometry using a lock-in amplifier by a standard low frequency ac method. Results indicate that the transport properties of SWNT bundles are sensitive to even inert gases present in the sample chamber.

Original languageEnglish (US)
Pages (from-to)1096-1099
Number of pages4
JournalPhysical Review Letters
Volume85
Issue number5
DOIs
StatePublished - Jul 31 2000

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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