Two growth modes of graphitic carbon nanofibers with herringbone structure

Merkulov, I. A., A. V. Melechko, J. C. Wells, H. Cui, V. I. Merkulov, M. L. Simpson, and D. H. Lowndes. 
Phys. Rev. B, vol. 72, 2005, 045409.

A simple mathematical model of the carbon nanofiber catalytic growth process is presented. Two major types of the fiber-catalyst interface shapes have been identified and described having qualitatively different structure in the center of a nanofiber. Presently, we discuss that the appearance of the irregular structure in the nanofiber central area is a result of curved-interface-growth kinematics. We suggest the method to determine the phenomenological parameters of the developed model from experimental data.