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The transport properties of a CNT capacitively coupled to a molecule vibrating along one of its librational modes are studied and its transport properties analyzed in the presence of an STM tip. We evaluate the linear charge and thermal…

介观与纳米尺度物理 · 物理学 2013-09-12 F. Remaggi , N. Traverso Ziani , G. Dolcetto , F. Cavaliere , M. Sassetti

In this work, we have examined how the multi-vacancy defects induced in the horizontal direction change the energetics and the electronic structure of semiconducting Single-Walled Carbon Nanotubes (SWCNTs). The electronic structure of…

介观与纳米尺度物理 · 物理学 2017-08-21 G. Dereli , O. Eyecioglu , B. Sungu Misirlioglu

Carbon fiber and graphene-based nanostructures such as carbon nanotubes (CNTs) and defective structures have extraordinary potential as strong and lightweight materials. A longstanding bottleneck has been lack of understanding and…

材料科学 · 物理学 2021-10-26 Qi Zhao , Jordan J. Winetrout , Yanxun Xu , Yusu Wang , Hendrik Heinz

Although individual carbon nanotubes (CNTs) are superior as constituents to polymer chains, the mechanical and thermal properties of CNT fibers (CNTFs) remain inferior to commercial synthetic fibers due to the lack of synthesis methods to…

Carbon nanotubes (CNTs) are a promising material for high-performance electronics beyond silicon. But unlike silicon, the nature of the transport band gap in CNTs is not fully understood. The transport gap in CNTs is predicted to be…

This article provides an overview of the modeling of the effective thermomechanical properties of the multifunctional carbon nanotube (CNT) reinforced hybrid composites for advanced structural applications. The novel constructional feature…

计算物理 · 物理学 2017-04-13 S. I. Kundalwal

On the basis of the spin-polarized density functional theory calculations, we demonstrate that partially-open carbon nanotubes (CNTs) observed in recent experiments have rich electronic and magnetic properties which depend on the degree of…

材料科学 · 物理学 2009-11-16 Bing Huang , Young-Woo Son , Gunn Kim , Wenhui Duan , Jisoon Ihm

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

Carbon nanotube (CNT) reinforced metal matrix composites (MMCs) are gaining the attention of the researchers because of their demand in space and automobile industries for having low weight and high mechanical properties. Iron is the most…

材料科学 · 物理学 2021-03-17 Raashiq Ishraaq , Santosh Chhetri , Omkar Gautam , Shahriar Muhammad Nahid , A. M Afsar

I demonstrate a directional motion-transmission behavior of aligned carbon nanotubes (CNTs) using atomistic simulations. The network of overlapping $\pi$ orbitals at the interface act as gear teeth to translate the sliding motion of a CNT…

材料科学 · 物理学 2019-09-27 Zhao Wang

We present results of extensive theoretical studies concerning stability, morphology, and band structure of single wall carbon nanotubes (CNTs) covalently functionalized by -CHn(for n=2,3,4),-NHn(for n=1,2,3,4),-COOH and -OH groups. Our…

介观与纳米尺度物理 · 物理学 2013-05-31 Karolina Z. Milowska , Jacek A. Majewski

Vibration reduction is of great importance in various engineering applications, and a material that exhibits good vibration damping along with high strength and modulus has become more and more vital. Owing to the superior mechanical…

材料科学 · 物理学 2017-11-07 Jingna Zhao , Fulin Wang , Xin Zhang , Linjie Liang , Xueqin Yang , Qingwen Li , Xiaohua Zhang

In a theoretical study of gas adsorption on carbon nanotubes (CNT) nonequilibrium processes of ionization, polarization, surface diffusion and desorption of atoms are considered self-consistently. The approach is based on Zubarev's method…

材料科学 · 物理学 2014-12-04 A. I. Vasylenko , M. V. Tokarchuk , S. Jurga

A nanoscopic simulation for an acceleration sensor is aimed based on the piezoresistive effect of carbon nanotubes (CNTs). Therefore, a compact model is built from density functional theory (DFT), compared with results of molecular dynamics…

介观与纳米尺度物理 · 物理学 2017-07-04 C. Wagner , S. Hartmann , B. Wunderle , J. Schuster , S. E. Schulz , T. Gessner

Because of their natural one-dimensional (1D) structure combined with intricate chiral variations, carbon nanotubes (CNTs) exhibit various exceptional physical properties, such as ultrahigh electrical and thermal conductivity, exceptional…

The role of irradiation induced defects and temperature in the conducting properties of single-walled (10,10) carbon nanotubes has been analyzed by means of a first-principles approach. We find that di-vacancies modify strongly the energy…

材料科学 · 物理学 2007-05-23 Blanca Biel , F. J. Garcia-Vidal , Angel Rubio , Fernando Flores

We develop a new theory of an optical force exerted on a carbon nanotube (CNT) with a nonlocal conductivity. The optical force is expressed in terms of the surface current density and the axial electric field on the CNT surface. To…

量子物理 · 物理学 2026-05-08 Tomer Berghaus , Touvia Miloh , Gregory Ya. Slepyan

This work presents a model that successfully describes the tensile properties of macroscopic fibres of carbon nanotubes (CNTs). The core idea is to treat such a fibre as a network of CNT bundles, similar to the structure of high-performance…

材料科学 · 物理学 2019-03-01 J. C. Fernández-Toribio , B. Alemán , A. Ridruejo , J. J. Vilatela

We present the results of analytical study and Molecular Dynamics simulation of low energy nonlinear non-stationary dynamics of single-walled carbon nanotubes (CNTs). New phenomena of intensive energy exchange between different parts of CNT…

介观与纳米尺度物理 · 物理学 2014-12-30 Valeri V. Smirnov , Leonid I. Manevitch , Matteo Strozzi , Francesco Pelicano

The dependence of the energy of interwall interaction in double-walled carbon nanotubes (DWNT) on the relative position of walls has been calculated using the density functional method. This dependence is used to evaluate forces that are…

介观与纳米尺度物理 · 物理学 2015-05-14 E. Bichoutskaia , O. V. Ershova , Yu. E. Lozovik , A. M. Popov