Auteur(s): Jourdain V., Kanzow H, Castignolles M, Loiseau A, Bernier P
Conference: 16th International Winterschool on Electronic Properties of Novel Materials (KIRCHBERG (AUSTRIA), FR, 2002-03-02)
Actes de conférence: STRUCTURAL AND ELECTRONIC PROPERTIES OF MOLECULAR NANOSTRUCTURES, vol. 633 p.178-181 (2002)
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Résumé:
Nanofibers consisting of repeated units of multiwall carbon nanotubes (MWCNT) with a metal particle encapsulated at one end were synthesized by thermal chemical vapor deposition (CVD) of methane/hydrogen on Ni-Fe catalysts. The grown structures were studied by scanning electron microscopy (SEM), low and high-resolution transmission electron microscopy (TEM). Sequential growth is proposed to explain the periodicity of the nanofibers. The nanofibers are broken by sonication into single elementary units open at one end.