ABOUT SPLITTING AND ENCAPSULATION OF CATALYST PARTICLES AT GROWTH OF CARBON NANOTUBES
Growth of carbon nanotubes in the course of catalytic pyrolysis of acetylene is experimentally investigated. By methods of appearing-through electronic microscopy it is established that with participation of nanodispersed Fe, Co and Ni of a drop of the catalyst concentrate at tops of nanotubes, and also, breaking into separate, smaller particles, are localized in internal cavities of nanotubes in the form of inclusions. The boundary conditions leading to splitting and an encapsulation of a drop of the catalyst in an internal cavity of nanotube are defined