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.
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)