Direct evaluation of ballistic phonon transport in a multi-walled carbon nanotube

Hiroyuki Hayashi, Koji Takahashi, Tatsuya Ikuta, Takashi Nishiyama, Yasuyuki Takata, Xing Zhang

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Phonon confinement and in situ thermal conductance measurements in an individual multi-walled carbon nanotube (MWNT) are reported. Focused ion beam (FIB) irradiation was used to successively shorten a 4.8 μm long MWNT, eventually yielding a 0.3 μm long MWNT. After the first FIB irradiation, a 41% reduction in conductance was achieved, compared with that of the pristine MWNT. This was because the contributions from phonons with long free paths were excluded by scattering at FIB-induced defects. Phonon transport in linked multiple-length nanotubes was also investigated.

Original languageEnglish
Article number113112
JournalApplied Physics Letters
Volume104
Issue number11
DOIs
Publication statusPublished - Mar 17 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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