Carbon nanoparticles including both nanofilaments and nanotubes produced by
an electrochemical deposition method from organic solutions at room
temperature, in which the formation and growth of carbon nanoparticles are
stimulated by the catalyst, such as iron and nickel. It has been found
that the electrochemical deposition conditions have a strong influence on
the growth phenomenon of the carbon nanotubes. Scanning electron
microscope (SEM) and transmitting electron microscope (TEM)
characterizations show that the diameter of nanotubes is of the order of
approximately 100 nm, and the length of filaments can be up to
approximately 50 .mu.m, depending on the size of catalyst particles.
