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

作者：Hayashi Hiroyuki; Takahashi Koji^*; Ikuta Tatsuya; Nishiyama Takashi; Takata Yasuyuki; Zhang Xing

来源：Applied Physics Letters, 2014, 104(11): 113112.

DOI：10.1063/1.4869470

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 mu m long MWNT, eventually yielding a 0.3 mu m 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.

• 出版日期2014-3-17
• 单位清华大学