Abstract
Multi-segmented one-dimensional metal nanowires were encapsulated within carbon nanotubes (CNTs) through in-situ filling technique during plasma-enhanced chemical vapor deposition process. Transmission electron microscopy (TEM) and environmental TEM were employed to characterize the as-prepared sample at room temperature and high temperature. The selected area electron diffractions revealed that the Pd4Si nanowire and face-centeredcubic Co nanowire on top of the Pd nanowire were encapsulated within the bottom and tip parts of the multiwall CNT, respectively. Although the strain-induced deformation of graphite walls was observed, the solid-state phases of Pd4Si and Co-Pd remain even at above their expected melting temperatures and up to 1,550 ± 50 °C. Finally, the encapsulated metals were melted and flowed out from the tip of the CNT after 2 h at the same temperature due to the increase of internal pressure of the CNT.
Original language | English |
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Article number | 448 |
Journal | Nanoscale Research Letters |
Volume | 7 |
DOIs | |
Publication status | Published - 2012 |
Externally published | Yes |
Keywords
- Carbon nanotubes
- Encapsulation
- Environmental TEM
- In-situ filling method
- Melting temperature
- Metal nanowires
- Transmission electron microscopy (TEM)
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics