Abstract
Based on the chiral indices, different structures like an arm chair, zigzag and chiral are formed and carbon nanotube (CNT) shows semiconducting and metallic properties. This is a very interesting phenomenon in the field of nanoelectronics research. Some fundamental parameters like diameter, bandgap, number of hexagons in a unit cell, and temperature affect the carbon nanotube properties. These parameters may also change the carrier mobility in the carbon nanotube based back-gated field effect transistor (FET). Diameter (directly proportional with mobility) and temperature (inversely proportional to the mobility) dependency is very much important on charge density.
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