Polarization dependence of the optical absorption of single-walled carbon nanotubes.
Anisotropic optical absorption properties of single-walled carbon nanotubes (SWNTs) are determined from a vertically aligned SWNT film for 0.5-6 eV. Absorption peaks at 4.5 and 5.25 eV are found to exhibit remarkable polarization dependence and have relevance to optical properties of graphite. A method for determining a nematic order parameter for an aligned SWNT film based on the collinear absorption peak at 4.5 eV is presented, followed by the determination of the optical absorption cross section.
Murakami
Yoichi
Y
Department of Mechanical Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan. murayami@photon.t.u-tokyo.ac.jp
Einarsson
Erik
E
Edamura
Tadao
T
Maruyama
Shigeo
S