Effect of Fullerene Encapsulation on Radial Vibrational Breathing-Mode Frequencies of Single-Wall Carbon Nanotubes

被引：30

作者：

Joung, Soon-Kil ^{[1
]}

Okazaki, Toshiya ^{[1
,2
]}

Kishi, Naoki ^{[1
]}

Okada, Susumu ^{[3
,4
,5
]}

Bandow, Shunji ^{[6
]}

Iijima, Sumio ^{[1
,6
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Res Ctr Adv Carbon Mat, Tsukuba, Ibaraki 3058565, Japan

[2] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

[3] Univ Tsukuba, Inst Phys, Tsukuba, Ibaraki 3058577, Japan

[4] Univ Tsukuba, Ctr Computat Sci, Tsukuba, Ibaraki 3058577, Japan

[5] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

[6] Meijo Univ, Dept Mat Sci & Engn, Tenpaku Ku, Nagoya, Aichi 4688502, Japan

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 02期

关键词：

BAND-GAP MODIFICATION;

D O I：

10.1103/PhysRevLett.103.027403

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the effects of C-60 fullerene encapsulation on the radial breathing mode (RBM) of semiconducting single-wall carbon nanotubes (SWCNTs) under tunable laser excitations. The changes in the RBM frequencies after C-60 insertions show characteristic behavior; higher frequency shifts are observed in the case of smaller diameter tubes (d(t)less than or similar to 1.32 nm) and lower frequency shifts, in the case of larger diameter tubes (d(t)greater than or similar to 1.32 nm). The observed frequency shifts are satisfactorily explained by the diameter-dependent interaction between the encapsulated C-60 and the host SWCNTs.

引用

页数：4

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