Ion irradiation induced damage on multiwalled carbon nanotubes

In this work the Raman spectroscopy investigation of nanotube defects created by irradiation of Ar+ -ions with vari-ous energies and doses is presented. In order to get more informative data, SEM and TGA analysis was added. Sheet resistivity of samples also measured with standard four point probe technique. From the results, it is evident that intensity ratio ID/IG increases with enhancement of the irradiation dose. comparing the intensity ratio IDʹ/IG with ID/IG tend to decide Dʹ band treated as a defect. Electrical measurements show that resistance of samples increases with enhancement of irradiation dose, clearly due to creation of more defects.