Transmission electron microscopy observations of CNT morphology before and after heating in vacuum |
| |
Authors: | GL Martin PR Schwoebel |
| |
Institution: | Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA |
| |
Abstract: | Heating of multi-walled carbon nanotubes is often required to obtain clean patterns in the field electron emission microscope (FEEM). A transmission electron micrograph study of morphological changes in the cap structure of multi-walled carbon nanotubes due to heating in vacuum is presented. The lack of significant structural change in the cap structure when specimens were heated to 1925 K for 2.5 h determines an upper bound for the diffusivity of multi-walled carbon nanotube surface atoms, of the order of 10−16 cm2/s at 1925 K. |
| |
Keywords: | Fullerenes Multi-walled carbon nanotubes Diffusivity Transmission electron microscopy |
本文献已被 ScienceDirect 等数据库收录! |