通过瑞利散射光谱研究单根碳纳米管之间的相互作用。

Interactions between individual carbon nanotubes studied by Rayleigh scattering spectroscopy.

作者信息

Wang Feng, Sfeir Matthew Y, Huang Limin, Huang X M Henry, Wu Yang, Kim Jaehee, Hone James, O'Brien Stephen, Brus Louis E, Heinz Tony F

机构信息

Department of Physics, Columbia University, New York, New York 10027, USA.

出版信息

Phys Rev Lett. 2006 Apr 28;96(16):167401. doi: 10.1103/PhysRevLett.96.167401.

DOI:10.1103/PhysRevLett.96.167401

PMID:16712273

Abstract

The electronic properties of single-walled carbon nanotubes (SWNTs) are altered by intertube coupling whenever bundles are formed. These effects are examined experimentally by applying Rayleigh scattering spectroscopy to probe the optical transitions of given individual SWNTs in their isolated and bundled forms. The transition energies of SWNTs are observed to undergo redshifts of tens of meVs upon bundling with other SWNTs. These intertube coupling effects can be understood as arising from the mutual dielectric screening of SWNTs in a bundle.

摘要

每当形成管束时，单壁碳纳米管（SWNTs）的电子特性就会因管间耦合而改变。通过应用瑞利散射光谱来探测给定单个SWNTs在其孤立和管束形式下的光学跃迁，对这些效应进行了实验研究。观察到SWNTs与其他SWNTs成束时，其跃迁能量会发生数十毫电子伏特的红移。这些管间耦合效应可以理解为是由管束中SWNTs的相互介电屏蔽引起的。