TY - GEN
T1 - Characterization of thermal transport in multiwalled carbon nanotube using FIB irradiation
AU - Takahashi, Koji
AU - Hayashi, Hiroyuki
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/9/4
Y1 - 2014/9/4
N2 - Thermal conductance of an individual multiwalled carbon nanotube was measured as a function of its length. Focused ion beam was used to shorten a 4.8 micrometer-long nanotube to 2.4, 1.2, 0.6, and 0.3-micrometer-long specimens on a hot-film sensor. As the nanotube is shorten, the conductance decreases more than expected by the diffusive thermal conduction theory. We treated two nanotubes of 64nm and 85nm diameters, both of which showed quasi-ballistic phonon transport. This is the first experiment to quantitatively investigate the contribution of phonons with long free paths in multiwalled carbon nanotube. The principle of thermal measurement, amorphous carbon induced by the ion beam, and considerable errors are also explained.
AB - Thermal conductance of an individual multiwalled carbon nanotube was measured as a function of its length. Focused ion beam was used to shorten a 4.8 micrometer-long nanotube to 2.4, 1.2, 0.6, and 0.3-micrometer-long specimens on a hot-film sensor. As the nanotube is shorten, the conductance decreases more than expected by the diffusive thermal conduction theory. We treated two nanotubes of 64nm and 85nm diameters, both of which showed quasi-ballistic phonon transport. This is the first experiment to quantitatively investigate the contribution of phonons with long free paths in multiwalled carbon nanotube. The principle of thermal measurement, amorphous carbon induced by the ion beam, and considerable errors are also explained.
UR - http://www.scopus.com/inward/record.url?scp=84907687563&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84907687563&partnerID=8YFLogxK
U2 - 10.1109/ITHERM.2014.6892439
DO - 10.1109/ITHERM.2014.6892439
M3 - Conference contribution
AN - SCOPUS:84907687563
T3 - Thermomechanical Phenomena in Electronic Systems -Proceedings of the Intersociety Conference
SP - 1375
EP - 1378
BT - Thermomechanical Phenomena in Electronic Systems -Proceedings of the Intersociety Conference
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 14th InterSociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems, ITherm 2014
Y2 - 27 May 2014 through 30 May 2014
ER -