Radial Electromechanical Properties of Carbon Nanotubes


  • We acknowledge financial support provided by the Ministerio de Educación y Ciencia through project MAT2001_0664 and European Community through project IST-201-38951. The authors thank E. Hernandez, A. M. Baró, and P. Serena for helpful discussions. We also thanks M. T. Martínez for providing MWNT samples.


The radial electromechanical properties of carbon nanotubes have been measured. The electrical conductance of single-walled carbon nanotubes (SWNTs) as a function of the loading force and bias voltage applied by an atomic force microscope tip is reported (see Figure). An increase of the conductance due to the tip–SWNT electrical contact formation and a drop of the conductance at high loading forces due to radial molecule deformation are observed (see also inside front cover).