title: Optical absorption and thermal transport of individual suspended carbon nanotube bundles.
abstract: A focused laser beam is used to heat individual single-walled carbon nanotube bundles bridging two suspended microthermometers. By measurement of the temperature rise of the two thermometers, the optical absorption of 7.4-10.3 nm diameter bundles is found to be between 0.03 and 0.44% of the incident photons in the 0.4 microm diameter laser spot. The thermal conductance of the bundle is obtained with the additional measurement of the temperature rise of the nanotubes in the laser spot from shifts in the Raman G band frequency. According to the nanotube bundle diameter determined by transmission electron microscopy, the thermal conductivity is obtained.
authors.affiliation: Department of Materials Science, University of Southern California, Los Angeles, California 90089, USA.
authors.forename: I-Kai
authors.initials: IK
authors.lastname: Hsu
authors.forename: Michael T
authors.initials: MT
authors.lastname: Pettes
authors.forename: Adam
authors.initials: A
authors.lastname: Bushmaker
authors.forename: Mehmet
authors.initials: M
authors.lastname: Aykol
authors.forename: Li
authors.initials: L
authors.lastname: Shi
authors.forename: Stephen B
authors.initials: SB
authors.lastname: Cronin