Direct measurement of the polarized optical absorption cross section of single-wall carbon nanotubes

被引：165

作者：

Islam, MF ^{[1
]}

Milkie, DE ^{[1
]}

Kane, CL ^{[1
]}

Yodh, AG ^{[1
]}

Kikkawa, JM ^{[1
]}

机构：

[1] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 93卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.93.037404

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We determine optical absorption cross sections of single-wall carbon nanotubes for visible light copolarized and cross polarized with respect to the nanotube axis. The need for perfectly aligned ensembles in absorbance measurements is eliminated by using Raman scattering to measure the nematic order parameter in magnetically aligned nanotube suspensions. The absorbance data allow the first quantitative, spectral comparisons with theories of local field depolarization, and provide benchmark spectra for simple, rapid, and quantitative measurements of alignment within nanotube dispersions.

引用

页码：037404 / 1

页数：4

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