Carbon nanotube terahertz polarizer.
We describe a film of highly aligned single-walled carbon nanotubes that acts as an excellent terahertz linear polarizer. There is virtually no attenuation (strong absorption) when the terahertz polarization is perpendicular (parallel) to the nanotube axis. From the data, the reduced linear dichrosim was calculated to be 3, corresponding to a nematic order parameter of 1, which demonstrates nearly perfect alignment as well as intrinsically anisotropic terahertz response of single-walled carbon nanotubes in the film.
Ren
Lei
L
Department of Electrical and Computer Engineering, Rice University, Houston, Texas 77005, USA.
Pint
Cary L
CL
Booshehri
Layla G
LG
Rice
William D
WD
Wang
Xiangfeng
X
Hilton
David J
DJ
Takeya
Kei
K
Kawayama
Iwao
I
Tonouchi
Masayoshi
M
Hauge
Robert H
RH
Kono
Junichiro
J
D016880:Anisotropy; D008422:Materials Testing; D008859:Microscopy, Polarization; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013499:Surface Properties
D037742:Nanotubes, Carbon