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

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.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ; ;  [1] ;  [2] ;  [4] ;  [3] ;  [5] ;  [6]
  1. Department of Aeronautics and Astronautics, Kyushu University, Fukuoka 819-0395 (Japan)
  2. (Japan)
  3. (WPI-I2CNER), Kyushu University, Fukuoka 819-0395 (Japan)
  4. JST, CREST, Kyushu University, Fukuoka 819-0395 (Japan)
  5. International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395 (Japan)
  6. (China)
Publication Date:
OSTI Identifier:
22257698
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 11; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON NANOTUBES; ION BEAMS; IRRADIATION; PHONONS