Direct evidence for lip-lip interactions in multi-walled carbon nanotubes
- First Online:
- Cite this article as:
- Jin, C., Suenaga, K. & Iijima, S. Nano Res. (2008) 1: 434. doi:10.1007/s12274-008-8045-0
The stability of open edged multi-walled carbon nanotubes has been investigated by using in situ high resolution transmission electron microscopy at elevated temperatures. Formation of inter-shell structures was experimentally observed for the first time and attributed to a robust interaction between adjacent concentric shells (so-called lip-lip interaction). The fl uctuating behavior of the inter-shell structures suggests a mechanism by which the carbon atoms can pass in or out through the inter-shell edges during carbon nanotube growth or shrinkage processes.