| AVS 54th International Symposium | |
| Nanometer-scale Science and Technology | Monday Sessions |
| Session NS-MoA |
| Session: | Nanoscale Assembly and Manipulation II |
| Presenter: | M. Passacantando, University of L'Aquila - Italy |
| Authors: | M. Passacantando, University of L'Aquila - Italy F. Bussolotti, University of L'Aquila - Italy V. Grossi, University of L'Aquila - Italy S. Santucci, University of L'Aquila - Italy L. Lozzi, University of L'Aquila - Italy |
| Correspondent: | Click to Email |
The results of in situ manipulation and electrical transport characterisation of individual MWCNT grown on nickel tip by using a piezoelectric nanomanipulation system operating in a SEM chamber have been reported. The growth of MWCNT directly on nickel wire by chemical vapour deposition technique ensures a good electrical contact with the catalyst substrate. Using the electron beam induced welding a fully characterization of electronic properties of several MWCNT has been explored without the usual postprocessing methods which may alter, in principle the intrinsic properties of the CNT. Thanks to the high mechanical and electrical stability ensured by the electron beam welding procedure a detailed study of the CNT electrical transport properties modification under CNT buckling has been performed. The crucial role played by the structural defects in determining an irreversibility of a long MWCNT IV characteristic under mechanical stress has been clearly evidenced. Finally, by a proper sequence of CNT/tip welding and movement the potentiality in creating ohmic junction between two nanotubes has been demonstrated opening the route to a systematic investigation of one of the most fundamental aspect of the CNT physics.