期刊
ADVANCED MATERIALS
卷 22, 期 1, 页码 93-+出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.200901113
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资金
- World Premier International Center for Materials Nanoarchitectonics (MANA) Project tenable at the NIMS, Tsukuba, Japan
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 heterojunctions, as well as new and detailed understanding of the CNT catalytic growth.
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