Pressure-Induced Selectivity for Probing Inner Tubes in Double- and Triple-Walled Carbon Nanotubes: A Resonance Raman Study

被引：33

作者：

Alencar, R. S. ^{[1
]}

Aguiar, A. L. ^{[1
,10
]}

Paschoal, A. R. ^{[1
]}

Freire, P. T. C. ^{[1
]}

Kim, Y. A. ^{[2
]}

Muramatsu, H. ^{[3
]}

Endo, M. ^{[4
]}

Terrones, H. ^{[1
,11
]}

Terrones, M. ^{[5
,6
]}

San-Miguel, A. ^{[7
]}

Dresselhaus, M. S. ^{[8
,9
]}

Souza Filho, A. G. ^{[1
]}

机构：

[1] Univ Fed Ceara, Dept Fis, BR-60455900 Fortaleza, Ceara, Brazil

[2] Chonnam Natl Univ, Sch Polymer Sci & Engn, Kwangju 500757, South Korea

[3] Nagaoka Univ Technol, Dept Mat Sci & Technol, Nagaoka, Niigata 9402188, Japan

[4] Shinshu Univ, Fac Engn, Nagano 3808553, Japan

[5] Penn State Univ, Ctr Dimens & Layered Mat 2, Dept Mat Sci & Engn, Dept Phys,Dept Chem, University Pk, PA 16802 USA

[6] Shinshu Univ, Res Ctr Exot Nanocarbons JST, Nagano 380853, Japan

[7] Univ Lyon 1, CNRS, Lab PMCN, UMR 5586, F-69622 Villeurbanne, France

[8] MIT, Dept Elect Engn & Comp Sci, Cambridge, MA 02139 USA

[9] MIT, Dept Phys, Cambridge, MA 02139 USA

[10] Univ Fed Piaui, Dept Fis, BR-64049550 Teresina, Piaui, Brazil

[11] Rensselaer Polytech Inst, Dept Phys Appl Phys & Astron, Troy, NY 12180 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2014年 / 118卷 / 15期

基金：

新加坡国家研究基金会;

关键词：

SPECTROSCOPY;

D O I：

10.1021/jp4126045

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The dependence of the radial breathing modes (RBMs) and the tangential mode (G-band) of triple-wall carbon nanotubes (TWCNTs) under hydrostatic pressure is reported. Pressure screening effects are observed for the innermost tubes of TWCNTs similar to what has been already found for DWCNTs. However, using the RBM pressure coefficients in conjunction with the histogram of the diameter distribution, we were able to separate the RBM Raman contribution related to the intermediate tubes of TWCNTs from that related to the inner tubes of DWCNTs. By combining Raman spectroscopy and high-pressure measurements, it was possible to identify these two categories of inner tubes even if the two tubes exhibit the same diameters because their pressure response is different. Furthermore, it was possible to observe similar RBM profiles for the innermost tubes of TWCNTs using different resonance laser energies but also under different pressure conditions. This is attributed to changes in the electronic transition energies caused by small pressure-induced deformations. By using Raman spectroscopy, it was possible to estimate the displacement of the optical energy levels with pressure.

引用

页码：8153 / 8158

页数：6

共 31 条

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