In situ transmission electron microscopy observation of keV-ion irradiation of single-walled carbon and boron nitride nanotubes

被引：9

作者：

Liu, A. C. Y. ^{[1
,2
]}

Arenal, R. ^{[2
,3
,4
,5
]}

Montagnac, G. ^{[6
]}

机构：

[1] Monash Univ, Sch Phys, Clayton, Vic 3800, Australia

[2] Argonne Natl Lab, Div Mat Sci, Ctr Electron Microscopy, Argonne, IL 60439 USA

[3] Univ Zaragoza, INA, LMA, Zaragoza 50018, Spain

[4] Fdn ARAID, Zaragoza 50018, Spain

[5] ONERA CNRS, UMR 104, Lab Etud Microstruct, F-92322 Chatillon, France

[6] Ecole Normale Super Lyon, CNRS UMR5276, Lab Geol Lyon, F-69342 Lyon, France

来源：

CARBON | 2013年 / 62卷

关键词：

RAMAN-SPECTROSCOPY; SCATTERING; GRAPHENE; DEFECTS;

D O I：

10.1016/j.carbon.2013.05.062

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：

Single-walled carbon nanotubes (SWCNNT) and single-walled boron nitride nanotubes (SWBNNT) were irradiated with 30 key Kr+ ions at room temperature. The structural changes during irradiation were monitored in situ using transmission electron microscopy (TEM) and ex situ at certain dose points using Raman spectroscopy. Our measurements demonstrate that metallic/semiconducting SWCNNT and insulating SWBNNT undergo similar structural modifications due to key-ion irradiation. Point defects due to primary knock-on events accumulate and lead to the formation of defect complexes and eventual amorphization. The loss of atoms due to sputtering reduces the nanotube diameter and leads to shrinkage. Time resolved footage of the ion irradiation of a particular area demonstrated that NT scission and subsequent shortening can take place with some probability, possibly due to collision cascade events. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：248 / 255

页数：8

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