Diameter, strength and resistance tuning of double-walled carbon nanotubes in a transmission electron microscope

Cheng，Yong1; Li，Xin1; Gao，Haowen1; Wang，Jinming1; Luo，Guangfu2; Golberg，Dmitri3,4; Wang，Ming Sheng1

2020-04-30

10.1016/j.carbon.2020.01.012

CARBON   影响因子和分区

0008-6223

1873-3891

We report an atomic structure and property tailoring method that enables precise control of the diameter of individual double-walled carbon nanotubes (DWNTs), as well as the corresponding tuning of their tensile strength and electrical resistance. As demonstrated in a transmission electron microscope (TEM), this facile method involves the electron irradiation of DWNTs, followed by a thermal annealing process. The former process is responsible for the random atom loss and tube size reduction, whereas the latter allows for a complete structural recovery of defective nanotubes. The regarded DWNTs thus experience repeated disorder-order structural transitions, leading to the stepwise shrinkage in tube size, until the desired diameter is reached. Accordingly, these disorder-order transitions allow individual DWNTs to be controllably weakened and then strengthened, accompanied with the reversible changes in their breaking modes, as revealed by direct in-situ tensile tests. Differently, the resistance tuning of DWNTs upon irradiation/annealing does not follow the same trend, but depends significantly on the initial tube electrical characteristics and subsequent chirality transitions. These experimental results, combined with first-principles calculations, suggest that the change of tube chirality involved in the disorder-order transitions profoundly influences DWNT transport properties, but has a little impact on their mechanical strength.

SCI ; EI

英语

其他

Fundamental Research Funds for the Central Universities[] ; Australian Research Council[] ; National Natural Science Foundation of China[61471307]

Chemistry ; Materials Science

Chemistry, Physical ; Materials Science, Multidisciplinary

WOS:000517977200010

Elsevier Ltd

20200208021508

Calculations ; Chirality ; Electron irradiation ; Nanotubes ; Order disorder transitions ; Tensile strength ; Tensile testing ; Transmission electron microscopy ; Tuning

Nanotechnology:761 ; Mathematics:921 ; Atomic and Molecular Physics:931.3

CHEMISTRY

2-s2.0-85077644714

Scopus

1.Department of Materials Science and Engineering,College of Materials,Xiamen University,Xiamen,361005,China
2.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.Centre for Materials Science and School of Chemistry and Physics,Science and Engineering Faculty,Queensland University of Technology (QUT),Brisbane,2 George Str.,4000,Australia
4.International Center for Materials Nanoarchitectonics (MANA),National Institute for Materials Science (NIMS),Tsukuba,Namiki 1-1,3050044,Japan

Cheng，Yong,Li，Xin,Gao，Haowen,et al. Diameter, strength and resistance tuning of double-walled carbon nanotubes in a transmission electron microscope[J]. CARBON,2020,160:98-106.

Cheng，Yong.,Li，Xin.,Gao，Haowen.,Wang，Jinming.,Luo，Guangfu.,...&Wang，Ming Sheng.(2020).Diameter, strength and resistance tuning of double-walled carbon nanotubes in a transmission electron microscope.CARBON,160,98-106.

Cheng，Yong,et al."Diameter, strength and resistance tuning of double-walled carbon nanotubes in a transmission electron microscope".CARBON 160(2020):98-106.