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Interface Dynamic Behavior Between a Carbon Nanotube and Metal Electrode
Author(s) -
Wang MingSheng,
Golberg Dmitri,
Bando Yoshio
Publication year - 2010
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200901113
Subject(s) - materials science , carbon nanotube , electrode , nanotechnology , nanotube , carbide , tungsten , metal , tungsten carbide , composite material , metallurgy , chemistry
Interface dynamic behavior between individual carbon nanotubes (CNTs) and tungsten (W) electrodes is observed directly at a nearly atomic resolution. The W tip‐end absorbs the source CNT atoms, which then penetrate deep into its body, form a carbide, and finally precipitate as freshly formed graphitic tubular shells encapsulating the electrode. CNT wall‐thickness shaping via stepwise absorption of the nanotube core shells into a W electrode is demonstrated for the first time. This work provides novel one‐dimensional CNT–carbide–metal hetero‐junctions, as well as new and detailed understanding of the CNT catalytic growth.