We discuss a number of recent observations on carbon nanotubes tips. Evidence from scanning tunneling microscopy (STM) and spectroscopy (STS) experiments  indicates that the topology of the carbon bond network at the tip, and in particular the relative location of pentagons in the curved regions of the caps, is ultimately responsible for the space-resolved electronic properties of the tubes. The theoretical analysis of the local density of (electronic) states (LDOS) is shown to be a powerful tool to rationalize the experimental data. Images of carbon nanotube tips acquired in field emission microscopy (FEM) experiments  can be related to the STM/STS observations.
|Original language||English (US)|
|Number of pages||4|
|Journal||Applied Physics A: Materials Science and Processing|
|State||Published - Mar 1999|
All Science Journal Classification (ASJC) codes
- Materials Science(all)