Fabrication of Vacuum Chamber and Synthesis of Nanotubes. A Theorical Investigation of Exciton-Photon Interaction in the

The single-walled nanotubes, is made of a grafyn sheet which is bent to form a hollow cylinder and the combination of single-walled nanotubes with different diameters forms multi-wall nanotubes. There are different methods for the synthesis of carbon nanotubes including, Electric Arc Discharge, Laser Vaporization and Chemical vapor Deposition. Carbon nanotubes produced in arc discharge or laser vaporization of graphite have less structural defects camparing to other methods due to the high process temperatures. The third method comparing to the previous methods, is a simple technique for synthesis carbon nanotubes at low temperature and ambient pressure and leads to mass production. If the laser is used to heat the substrate surface, this method is called LCVD which has some advantages comparing to CVD method. In this paper in addition to nanotube synthesis with this method, a study on the interaction exciton with the CNT surface electromagnetic field is conducted