Straight and coiled single-wall carbon nanotubes (SWCNTs) synthesized by laser vaporization were dispersed on highly oriented pyrolitic graphite. Their morphology and electrical properties were investigated by scanning tunneling microscopy (STM). STM images revealed that the SWCNTs (either straight or coiled) often self-organize into bundles of two or more tubes and are rarely found alone. The conductance measured along a periodically coiled CNT was found to increase at locations where the CNT is squeezed, while it decreases significantly in unsqueezed regions characterized by an unperturbed hexagonal network. This provides experimental evidence of significant conductance modulation along a one-dimensional system on the nanometer scale. © 2004 American Institute of Physics.
Castrucci, P., Scarselli, M.a., DE CRESCENZI, M., El Khakani, M., Rosei, F., Braidy, N., et al. (2004). Effect of coiling on the electronic properties along single-wall carbon nanotubes. APPLIED PHYSICS LETTERS, 85(17), 3857-3859 [10.1063/1.1809277].
Effect of coiling on the electronic properties along single-wall carbon nanotubes
CASTRUCCI, PAOLA;SCARSELLI, MANUELA ANGELA;DE CRESCENZI, MAURIZIO;
2004-01-01
Abstract
Straight and coiled single-wall carbon nanotubes (SWCNTs) synthesized by laser vaporization were dispersed on highly oriented pyrolitic graphite. Their morphology and electrical properties were investigated by scanning tunneling microscopy (STM). STM images revealed that the SWCNTs (either straight or coiled) often self-organize into bundles of two or more tubes and are rarely found alone. The conductance measured along a periodically coiled CNT was found to increase at locations where the CNT is squeezed, while it decreases significantly in unsqueezed regions characterized by an unperturbed hexagonal network. This provides experimental evidence of significant conductance modulation along a one-dimensional system on the nanometer scale. © 2004 American Institute of Physics.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
