title: High temperature in-situ observations of multi-segmented metal nanowires encapsulated within carbon nanotubes by in-situ filling technique.
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-centered-cubic 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.
authors.affiliation: Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan. hayashi.yasuhiko@nitech.ac.jp.
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Hayashi
authors.forename: Tomoharu
authors.initials: T
authors.lastname: Tokunaga
authors.forename: Toru
authors.initials: T
authors.lastname: Iijima
authors.forename: Takuya
authors.initials: T
authors.lastname: Iwata
authors.forename: Golap
authors.initials: G
authors.lastname: Kalita
authors.forename: Masaki
authors.initials: M
authors.lastname: Tanemura
authors.forename: Katsuhiro
authors.initials: K
authors.lastname: Sasaki
authors.forename: Kotaro
authors.initials: K
authors.lastname: Kuroda