Armchair Carbon Nanotubes

When you apply a voltage between two ends of an armchair nanotube a current will flow.

Armchair carbon nanotubes. Complications pertaining to the detection and characterization of individual and embedded single walled carbon nanotubes by scanning electron microscopy. As a consequence hhg in swnts can be. A carbon nanotube cnt is a molecular scale structure consisting of carbon atoms arranged in one or more cylindrical layers joined by covalent bonds in a hexagonal tiling pattern within each layer so as to form a hollow tube up to a few hundred nanometres in diameter. In nanoscale sensor applications particular atomic lattice structures of carbon nanotubes are selected in order to ensure desired electrical conductivity.

Carbon nanotube also called buckytube nanoscale hollow tubes composed of carbon atoms the cylindrical carbon molecules feature high aspect ratios length to diameter values typically above 10 3 with diameters from about 1 nanometer up to tens of nanometers and lengths up to millimeters this unique one dimensional structure and concomitant properties endow carbon nanotubes with special. A single walled carbon nanotubes swcnt can be envisioned as strip of a graphene molecule a single sheet of graphite rolled and joined into a seamless cylinder the structure of the nanotube can be characterized by the width of this hypothetical strip that is the circumference c or diameter d of the tube and the angle α of the strip relative to the main symmetry axes of the. We study high order harmonic generation hhg in armchair type single wall carbon nanotubes swnts driven by ultrashort mid infrared laser pulses. Let r θ z denote the cylindrical coordinates in the reference undeformed configuration and e r e θ e z the corresponding unit vectors the only nonzero component of the second piola kirchhoff stress is t zz the displacement field can be generally written as.

For a swnt with chiral indices n n we demonstrate that hhg is dominated by bands m n 1 and that the cut off frequency saturates with intensity as it occurs in the case of single layer graphene. The deformation in armchair and zigzag carbon nanotubes under tension is uniform and axisymmetric prior to bifurcation. Nanoscale 2013 5 4 1411. An armchair carbon nanotube is a better conductor than copper or any other metal.

When you apply a voltage between two ends of an armchair nanotube a current will flow. 1 11 its atomic lattice is composed of carbon atoms in the periodic hexagonal arrangement in the armchair configuration which ensures. Single wall carbon nanotubes provide ideal model one dimensional 1 d condensed matter systems in which to address fundamental questions in many body physics while at the same time they are leading candidates for building blocks in nanoscale optoelectronic circuits. An example of the armchair 10 10 carbon nanotube with metallic conductive properties is shown in fig.

Armchair carbon nanotubes have electrical properties similar to metals. Much attention has been recently paid.