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

Journal Article · Mon Mar 17 00:00:00 EDT 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4869470· OSTI ID:22257698

Hayashi, Hiroyuki ^[1]; Takahashi, Koji ^[1]; Ikuta, Tatsuya; Nishiyama, Takashi ^[1]; Takata, Yasuyuki ^[2]; Zhang, Xing ^[3]

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1. Department of Aeronautics and Astronautics, Kyushu University, Fukuoka 819-0395 (Japan)
2. JST, CREST, Kyushu University, Fukuoka 819-0395 (Japan)
3. International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395 (Japan)

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.

• OSTI ID: 22257698
• Journal Information: Applied Physics Letters, Vol. 104, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
CARBON NANOTUBES
ION BEAMS
IRRADIATION
PHONONS