title: Angle-dependent light emission from aligned multiwalled carbon nanotubes under CO(2) laser irradiation.
abstract: This paper reports the light emission from aligned multiwalled carbon nanotubes (MWNTs) under continuous wave CO(2) laser (λ = 10.6 µm) irradiation. Results indicate that the light emission is dependent on the angle θ between the laser incident direction and the nanotube axis. The relative intensity of the light emission at certain wavelengths shows a Lorentzian feature when θ varies from 0° to 90°. The Lorentzian fitting curve displays a distinct tendency between shorter (λ<600 nm) and longer wavelength (λ>700 nm). A minimum intensity was observed at θ(m) close to 67° under shorter wavelength, whereas a maximum intensity was shown at θ(m) of about 60° at longer wavelength. These results show the anisotropic property of aligned MWNTs.
authors: Key Laboratory for Advanced Manufacturing by Materials Processing Technology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, People's Republic of China.
authors: Y
authors: Y
authors: Zhang
authors: T
authors: T
authors: Gong
authors: W J
authors: WJ
authors: Liu
authors: J Q
authors: JQ
authors: Wei
authors: X F
authors: XF
authors: Zhang
authors: K L
authors: KL
authors: Wang
authors: M L
authors: ML
authors: Zhong
authors: D H
authors: DH
authors: Wu