Charge Carrier Transport Properties in Single-Walled Carbon Nanotube Fibers
2008
tum phenomena like single-electron tunnelling [1], Luttinger liquid behaviour [2],ballistic transport [3], etc. On the other hand, carbon nanotube-based electronicshas promising application starting from antistatic shielding, transparent conduc-tive layers, interconnections and heat sinks in integrated circuits as well as gas,bio- and chemical sensors. For the latter aims a particular role is played by ar-rays (flbers) of carbon nanotubes. Hence, the understanding of charge carrierproperties is one of the key-topics in the development of new devices.2. Experimental resultsThe SWCNTs flbers were synthesized using wet spinning process from solu-tions comprising nanotubes, surfactant and water. This process provides polymer-free nanotubes flbers without the need for super acid. The fabrication procedurewas described in detail in Ref. [4]. The SWCNT raw material itself was preparedby laser ablation. The flbers consist of a great number of individual nanotubesand typically have a diameter of 50
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