Polarization dependence of the optical absorption of single-walled carbon nanotubes
Polarization dependence of the optical absorption of single-walled carbon nanotubes
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DOI：
10.1103/physrevlett.94.087402
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发表时间：
2005-03-04
影响因子：
8.6
通讯作者：
Maruyama, S
中科院分区：
文献类型：
--
作者：
Murakami, Y;Einarsson, E;Maruyama, S
单壁碳纳米管（SWNTs）的各向异性的光学吸收特性的确定从垂直对齐的单壁碳纳米管膜为0.5-6 eV。在4.5和5.25 eV的吸收峰被发现表现出显着的偏振依赖性，并具有相关的光学性质的石墨。提出了一种基于在4.5 eV处的共线吸收峰确定取向单壁碳纳米管薄膜的有序参数的方法，然后确定光学吸收截面。
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.