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Abstract

We report a method to controllably alter the diameter of an individual carbon nanotube. The combination of defect formation via electron irradiation and simultaneous resistive heating and electromigration in vacuum causes the nanotube to continuously transform into a high-quality nanotube of successively smaller diameter, as observed by transmission electron microscopy. The process can be halted at any diameter. Electronic transport measurements performed in situ reveal a striking dependence of conductance on nanotube geometry. As the diameter of the nanotube is reduced to near zero into the carbon chain regime, we observe negative differential resistance.

Citing Articles

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This article has been cited by 16 ACS Journal articles (5 most recent appear below).

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  Transport Properties of Carbon Nanotubes: Effects of Vacancy Clusters and Disorder

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  The Journal of Physical Chemistry C2012 116 (1), 1179-1184

  • Transport Properties of Carbon Nanotubes: Effects of Vacancy Clusters and Disorder

    Alex Taekyung Lee, Yong-Ju Kang, and K. J. Chang
    The Journal of Physical Chemistry C2012 116 (1), 1179-1184

    We investigate the effects of vacancy defects on the electronic and transport properties of carbon nanotubes through density functional calculations. In both cases, where vacancies aggregate into larger clusters and are disordered, conductance changes ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
• 

  Doping Monolayer Graphene with Single Atom Substitutions

  Hongtao Wang, Qingxiao Wang, Yingchun Cheng, Kun Li, Yingbang Yao, Qiang Zhang, Cezhou Dong, Peng Wang, Udo Schwingenschlögl, Wei Yang, and X. X. Zhang
  Nano Letters2012 12 (1), 141-144

  • Doping Monolayer Graphene with Single Atom Substitutions

    Hongtao Wang, Qingxiao Wang, Yingchun Cheng, Kun Li, Yingbang Yao, Qiang Zhang, Cezhou Dong, Peng Wang, Udo Schwingenschlögl, Wei Yang, and X. X. Zhang
    Nano Letters2012 12 (1), 141-144

    Functionalized graphene has been extensively studied with the aim of tailoring properties for gas sensors, superconductors, supercapacitors, nanoelectronics, and spintronics. A bottleneck is the capability to control the carrier type and density by ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
• 

  Ripples and Layers in Ultrathin MoS₂ Membranes

  Jacopo Brivio, Duncan T. L. Alexander, and Andras Kis
  Nano Letters2011 11 (12), 5148-5153

  • Ripples and Layers in Ultrathin MoS₂ Membranes

    Jacopo Brivio, Duncan T. L. Alexander, and Andras Kis
    Nano Letters2011 11 (12), 5148-5153

    Single-layer molybdenum disulfide (MoS2) is a newly emerging two-dimensional semiconductor with a potentially wide range of applications in the fields of nanoelectronics and energy harvesting. The fact that it can be exfoliated down to single-layer ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
• 

  Ferromagnetism in Two-Dimensional Carbon Chains Linked by 1,3,5-Benzenetriyl Units

  Xiaowei Li, Qian Wang, and Puru Jena
  The Journal of Physical Chemistry C2011 115 (40), 19621-19625

  • Ferromagnetism in Two-Dimensional Carbon Chains Linked by 1,3,5-Benzenetriyl Units

    Xiaowei Li, Qian Wang, and Puru Jena
    The Journal of Physical Chemistry C2011 115 (40), 19621-19625

    Development of organic materials with novel magnetic properties has been an important and challenging topic in organic chemistry. A useful paradigm in this direction is to have spin-containing (SC) components linked by ferromagnetic coupling (FC) units. ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links
• 

  Transport Properties of a Squeezed Carbon Monatomic Ring: A Route to a Negative Differential Resistance Device

  Ming Qiu, Zhenhua Zhang, Zhiqiang Fan, Xiaoqing Deng, and Jinbo Pan
  The Journal of Physical Chemistry C2011 115 (23), 11734-11737

  • Transport Properties of a Squeezed Carbon Monatomic Ring: A Route to a Negative Differential Resistance Device

    Ming Qiu, Zhenhua Zhang, Zhiqiang Fan, Xiaoqing Deng, and Jinbo Pan
    The Journal of Physical Chemistry C2011 115 (23), 11734-11737

    Based on a first-principles approach, the transport behaviors for undeformed and deformed carbon cumulene monatomic rings are investigated. The distinct negative differential resistance (NDR) behaviors can be observed in a certain range of deformations. ...

    Abstract | Full Text HTML | Hi-Res PDF | PDF w/ Links

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