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Interface widely exists in carbon nanotube (CNT) assembly materials, taking place at different length scales. It determines severely the mechanical properties of these assembly materials. Here I assess the mechanical properties of…

材料科学 · 物理学 2017-06-02 Xiaohua Zhang

Electrostatic screening between carbon nanotubes (CNTs) in a small CNT bundle leads to a switching behavior induced by electric field perpendicular to the bundle axis. Using a first-principles method, we investigate the electronic…

介观与纳米尺度物理 · 物理学 2010-10-06 Gunn Kim , J. Bernholc , Young-Kyun Kwon

Careful research on different materials reveals that the material properties are mostly affected by the size of it. Material size down to nanometer scale exhibits some remarkable properties, resulting in unique physical and chemical…

应用物理 · 物理学 2019-09-04 Joydip Sengupta

The validity of the DFT models implemented by FIREBALL for CNT electronic device modeling is assessed. The effective masses, band gaps, and transmission coefficients of semi-conducting, zigzag, (n,0) carbon nanotubes (CNTs) resulting from…

介观与纳米尺度物理 · 物理学 2007-05-23 Deep Shah , Nicolas A. Bruque , Khairul Alam , Roger K. Lake , Rajeev R. Pandey

Tunneling spectroscopy measurements of single tunnel junctions formed between multiwalled carbon nanotubes (MWNTs) and a normal metal are reported. Intrinsic Coulomb interactions in the MWNTs give rise to a strong zero-bias suppression of a…

介观与纳米尺度物理 · 物理学 2009-11-10 W. Yi , L. Lu , H. Hu , Z. W. Pan , S. Xie

We perform ab initio calculations of charged graphene and single-wall carbon nanotubes (CNTs). A wealth of electromechanical behaviors is obtained: (1) Both nanotubes and graphene expand upon electron injection. (2) Upon hole injection,…

材料科学 · 物理学 2009-11-07 M. Verissimo-Alves , Belita Koiller , H. Chacham , R. B. Capaz

This investigation deals with the effect of growth temperature on the growth behavior of Fe filled multiwalled carbon nanotubes (MWCNTs). Carbon nanotube (CNT) synthesis was carried out in a thermal chemical vapor deposition (CVD) reactor…

材料科学 · 物理学 2019-08-07 Joydip Sengupta , Chacko Jacob

We have investigated the magnetoconductance of semiconducting carbon nanotubes (CNTs) in pulsed, parallel magnetic fields up to 60 T, and report the direct observation of the predicted band-gap closure and the reopening of the gap under…

介观与纳米尺度物理 · 物理学 2011-03-08 S. H. Jhang , M. Marganska , Y. Skourski , D. Preusche , M. Grifoni , J. Wosnitza , C. Strunk

The measured capacitance, modulus and strength of carbon nanotube-polyaniline (CNT-PANI) composite electrodes render them promising candidates for structural energy storage devices. Here, CNT-PANI composite electrodes are manufactured with…

应用物理 · 物理学 2021-06-18 Wei Tan , Joe C. Stallard , Changshin Jo , Michael F. L. De Volder , Norman A. Fleck

This paper is the first one of a series of two articles in which we revisit the optical properties of single-walled carbon nanotubes (SWNT). Produced by rolling up a graphene sheet, SWNT owe their intriguing properties to their cylindrical…

数学物理 · 物理学 2018-11-30 Morten Rasmussen , Benjamin Ricaud , Baptiste Savoie

The photocurrent properties of freely suspended single-walled carbon nanotubes (CNTs) are investigated as a function of uniaxial strain. We observe that at low strain, the photocurrent signal of the CNTs increases for increasing strain,…

介观与纳米尺度物理 · 物理学 2015-05-13 S. M. Kaniber , L. Song , J. P. Kotthaus , A. W. Holleitner

Carbon nanotube (CNT) fibres are firmly established as a new high-performance fibre, but their tensile mechanical properties remain a relatively small fraction of those of the constituent CNTs. Clear structure-property relations and…

应用物理 · 物理学 2020-08-05 J. C. Fernández-Toribio , A. Mikhalchan , C. Santos , A. Ridruejo , J. J. Vilatela

We show that carbon nanotubes (CNT) are good candidates for realizing one-dimensional topological superconductivity with Majorana fermions localized near the end points. The physics behind topological superconductivity in CNT is novel and…

超导电性 · 物理学 2013-08-14 Jay D. Sau , Sumanta Tewari

We report results on the rectification properties of a carbon nanotube (CNT) ring transistor, contacted by CNT leads, whose novel features have been recently communicated by Watanabe et al. [Appl. Phys. Lett. 78, 2928 (2001)]. This paper…

介观与纳米尺度物理 · 物理学 2007-05-23 G. Cuniberti , J. Yi , M. Porto

The empirical data in conjunction with the quantum mechanical calculations show that the strength enhancement in the cement-carbon nanotubes (CNTs) composites is the courtesy of electrostatic potential energy. This is contrary to the…

应用物理 · 物理学 2019-08-15 Muhammad Azeem , Muhammad Azhar Saleem

The conductivity of carbon nanotube (CNT) networks can be improved markedly by doping with nitric acid. In the present work, CNTs and junctions of CNTs functionalized with NO$_3$ molecules are investigated to understand the microscopic…

应用物理 · 物理学 2018-03-21 T. Ketolainen , V. Havu , E. Ö. Jónsson , M. J. Puska

The equilibrium density of fluids under nanoconfinement can differ substantially from their bulk density. Using a mean-field approach to describe the energetic landscape near the carbon nanotube (CNT) wall, we obtain analytical results…

流体动力学 · 物理学 2015-06-11 Gerald J. Wang , Nicolas G. Hadjiconstantinou

We propose a new drive mechanism for carbon nanotube (CNT) motors, based upon the torque generated by a flux of electrons passing through a chiral nanotube. The structure of interest comprises a double-walled CNT, formed from, for example,…

材料科学 · 物理学 2009-11-13 S W D Bailey , I Amanatidis , C J Lambert

Structural identification of double-walled carbon nanotubes (DWNT) is presented through a robust procedure based on the latest generation of transmission electron microscope, making possible a statistical analysis based on numerous…

Despite many theoretical schemes, the direct experimental observation of supramolecular control on band gap opening in single-walled carbon nanotubes (SWNT) is still lacking. We report experimental and theoretical demonstration of metal to…