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相关论文: Formation of amorphous carbon multi-walled nanotub…

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Calculations of the conductance of a carbon nanotube (CNT)-molecule-CNT structure are in agreement with experimental measurements [1]. The features in the transmission correspond directly to the features of the isolated molecular orbitals.…

其他凝聚态物理 · 物理学 2015-05-13 Nicolas A. Bruque , M. K. Ashraf , Roger K. Lake

Recent conductance measurements on multi-wall carbon nanotubes (CNTs) reveal an effective behavior similar to disordered single-wall CNTs. This is due to the fact that electric current flows essentially through the outermost shell and is…

介观与纳米尺度物理 · 物理学 2009-11-11 S. Krompiewski , N. Nemec , G. Cuniberti

We use classical molecular dynamics simulations to study the collapse of single (SWNT) and double-walled (DWNT) carbon nanotube bundles under hydrostatic pressure. The collapse pressure (pc) varies as 1/R^3, where R is the SWNT radius or…

其他凝聚态物理 · 物理学 2009-11-11 Vikram Gadagkar , Prabal K. Maiti , Yves Lansac , A. Jagota , A. K. Sood

We propose a previously unexplored way to form Nb nanowires from NbCl$_3$ molecules inside carbon nanotubes (CNTs). We have studied this reaction by ab initio density functional calculations and found it to be catalytically promoted in…

介观与纳米尺度物理 · 物理学 2019-12-09 Dan Liu , David Tomanek

We report evidence for high temperature superconductivity in three dimensional networks of boron doped, ultrathin carbon nanotubes (CNTs) grown inside the ~5 Angstrom channels of ZSM-5 zeolite. Confinement stabilizes (2,1) CNTs that are…

超导电性 · 物理学 2026-05-08 Y. Wang , T. H. Koo , R. Huang , Y. H. Ng , T. T. Lortz , T. Zhang , W. M. Chan , Y. Hou , J. Pan , S. Krämer , A. Demuer , R. Lortz , N. Wang , P. Sheng

Room-temperature quasi-ballistic electron transport in double-wall carbon nanotubes (DWNT) is demonstrated. Conductance dependence on the length was measured by submerging DWNTs into liquid mercury. The conductance plots show plateaus,…

材料科学 · 物理学 2009-11-10 Hisashi Kajiura , Houjin Huang , Alexey Bezryadin

The wafer scale integration of carbon nanotubes (CNT) remains a challenge for electronic and electromechanical applications. We propose a novel CNT integration process relying on the combination of controlled capillary assembly and buried…

We have measured the differential conductance dI/dV of individual multi-wall carbon nanotubes (MWNT) of different lengths. A cross-over from wire-like (long tubes) to dot-like (short tubes) behavior is observed. dI/dV is dominated by random…

介观与纳米尺度物理 · 物理学 2016-08-31 M. R. Buitelaar , A. Bachtold , T. Nussbaumer , M. Iqbal , C. Schoenenberger

Molecular dynamics simulations have been used to investigate the structures of Lennard-Jones (LJ) nanowires (NWs) encapsulated by carbon nanotubes (CNTs). We found that, when the radius of CNTs is small, the structures of NWs are quite…

介观与纳米尺度物理 · 物理学 2012-10-09 W. Q. Wu , Q. H. Yuan , D. Y. Sun

A spectroscopic study of the amino functionalization of double-walled carbon nanotube (DWCNT) is performed. Original experimental investigations by near edge X-ray absorption fine structure spectroscopy at the C and O K-edges allow one to…

We examine the effect of van der Waals (vdW) interactions between atomic force microscope (AFM) tips and individual carbon nanotubes (CNTs) supported on SiO2. Molecular dynamics (MD) simulations reveal how CNTs deform during AFM…

介观与纳米尺度物理 · 物理学 2012-07-09 Rouholla Alizadegan , Albert D. Liao , Feng Xiong , Eric Pop , K. Jimmy Hsia

Low-temperature thermal conductivity and thermopower of multiwalled carbon nanotubes considered within a bundle of nanotubes are calculated taking into account multiple scattering of electrons on the atoms of impurities (like single carbon…

高能物理 - 理论 · 物理学 2010-12-07 V. Egorushkin , N. Melnikova , A. Ponomarev , A. Reshetnyak

The self-assembly mechanism of one-end-open carbon nanotubes (CNTs) suspended in an aqueous solution was studied by molecular dynamics simulations. It was shown that two one-end-open CNTs with different diameters can coaxially self-assemble…

介观与纳米尺度物理 · 物理学 2017-07-31 Hang Xiao , Xiaoyang Shi , Xi Chen

We present a novel interpretable machine learning model to accurately predict complex rippling deformations of Multi-Walled Carbon Nanotubes(MWCNTs) made of millions of atoms. Atomistic-physics-based models are accurate but computationally…

计算物理 · 物理学 2021-01-20 Upendra yadav , Shashank Pathrudkar , Susanta Ghosh

The remarkable transport properties of carbon nanotubes (NTs) are determined by their unique electronic structure (1). The electronic states of a NT form one-dimensional electron and hole subbands which, in general, are separated by an…

介观与纳米尺度物理 · 物理学 2009-11-10 E. D. Minot , Yuval Yaish , Vera Sazonova , Paul L. McEuen

We find that ferromagnetism can be induced in carbon nanotubes (CNTs) by introducing hydrogen. Multiwalled CNTs grown inside porous alumina templates contain a large density of defects resulting in significant hydrogen uptake when annealed…

介观与纳米尺度物理 · 物理学 2015-05-18 Adam L. Friedman , Hyunkyung Chun , Yung Joon Jung , Don Heiman , Evan R. Glaser , Latika Menon

Carbon nanotubes tend to collapse when their diameters exceed a certain threshold, or when a sufficiently large external pressure is applied on their walls. Their radial stability of tubes has been studied in each of these cases, however a…

计算物理 · 物理学 2021-02-01 Y. Magnin , F. Rondepierre , W. Cui , D. J. Dunstan , A. San-Miguel

We present an empirical model for the nearballistic transport in carbon nanotube (CNT) transistors used as strain sensors. This model describes the intrinsic effect of strain on the transport in CNTs by taking into account phonon scattering…

介观与纳米尺度物理 · 物理学 2017-06-30 C. Wagner , J. Schuster , T. Gessner

In this paper, we offer large and realistic models of amorphous carbon spanning densities from 0.95 g/cm3 to 3.5 g/cm3 . The models are designed to agree as closely as possible with experimental diffraction data while simultaneously…

无序系统与神经网络 · 物理学 2018-11-29 Bishal Bhattarai , Anup Pandey , D. A. Drabold

A simple scalable scheme is reported for fabricating suspended carbon nanotube field effect transistors (CNT-FETs) without exposing pristine as-grown carbon nanotubes to subsequent chemical processing. Versatility and ease of the technique…

介观与纳米尺度物理 · 物理学 2009-09-22 V. K. Sangwan , V. W. Ballarotto , M. S. Fuhrer , E. D. Williams