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The chemisorption of atomic hydrogen on the single-walled armchair carbon nanotube is studied with ab initio calculations. A single H atom is found to be chemisorbed on both the inside and outside wall of the nanotube. The binding energy of…

材料科学 · 物理学 2007-05-23 Henry Scudder , Gang Lu , Nicholas Kioussis

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…

The van der Waals atom-surface attraction, scaling as C3 z-3 for z the atom-surface distance, is expected to be valid in the distance range 1-1000 nm, covering 8-10 orders of magnitudes in the interaction energy. A Cs vapour nanocell allows…

While the interactions between water molecules are dominated by strongly directional hydrogen bonds (HBs), it was recently proposed that relatively weak, isotropic van der Waals (vdW) forces are essential for understanding the properties of…

计算物理 · 物理学 2016-07-07 Tobias Morawietz , Andreas Singraber , Christoph Dellago , Jörg Behler

The electron transport through the nanotube junctions which connect the different metallic nanotubes by a pair of a pentagonal defect and a heptagonal defect is investigated by Landauer's formula and the effective mass approximation. From…

介观与纳米尺度物理 · 物理学 2016-08-31 Ryo Tamura , Masaru Tsukada

We present an overview of strong correlations in single-wall carbon nanotubes, and an introduction to the techniques used to study them theoretically. We concentrate on zigzag nanotubes, although universality dictates that much ofthe theory…

强关联电子 · 物理学 2009-11-13 Sam T. Carr

Towards the development of a useful mechanism for hydrogen storage, we have studied the hydrogenation of single-walled carbon nanotubes with atomic hydrogen using core-level photoelectron spectroscopy and x-ray absorption spectroscopy. We…

The dependence of the interwall conductance on distance between walls and relative positions of walls are calculated at the low voltage by Bardeen method for (n,n)@(2n,2n) double-walled carbon nanotubes (DWCNTs) with n = 5, 6, ..., 10. The…

介观与纳米尺度物理 · 物理学 2010-04-26 N. A. Poklonski , Nguyen Ngoc Hieu , E. F. Kislyakov , S. A. Vyrko , A. I. Siahlo , A. M. Popov , Yu. E. Lozovik

We have developed a pair-potential approach for the evaluation of van der Waals interaction between carbon nanotubes in bundles. Starting from a continuum model, we show that the intertube modes range from $5 cm^{-1}$ to $60 cm^{-1}$. Using…

材料科学 · 物理学 2009-10-31 L. Henrard , E. Hernandez , P. Bernier , A. Rubio

Interfacial adhesion between graphene and a SiO2 substrate is studied by density functional theory (DFT) with dispersion corrections. The results demonstrate the van der Waals (vdW) interaction as the predominate mechanism for the…

材料科学 · 物理学 2015-06-19 Wei Gao , Penghao Xiao , Graeme Henkelman , Kenneth M. Liechti , Rui Huang

This paper proposes a bottom-up sequence of modeling steps leading to a nanoscopically informed continuum, and as such macroscopic, theory of single-walled carbon nanotubes (SWCNTs). We provide a description of the geometry of the two most…

介观与纳米尺度物理 · 物理学 2011-11-22 Chandrajit Bajaj , Antonino Favata , Paolo Podio-Guidugli

We obtain analytically the exact non-retarded dispersive interaction energy between an atom and a perfectly conducting disc. We consider the atom in the symmetry axis of the disc and assume the atom is predominantly polarizable in the…

高能物理 - 理论 · 物理学 2016-03-09 Reinaldo de Melo e Souza , W. J. M. Kort-Kamp , C. Sigaud , C. Farina

Tomonaga-Luttinger-liquid theory is formulated for metallic carbon nanotubes with open boundaries. Both cases of single- and multi-wall nanotubes are discussed. Based on this theory, spatial variation of the charge density from an edge is…

强关联电子 · 物理学 2015-06-24 H. Yoshioka , Y. Okamura

Single-walled carbon nanotubes are strongly correlated systems with large Coulomb repulsion between two electrons occupying the same $p_z$ orbital. Within a molecular Hamiltonian appropriate for correlated $\pi$-electron systems, we show…

材料科学 · 物理学 2009-02-15 Zhendong Wang , Demetra Psiachos , Roberto F. Badilla , Sumit Mazumdar

A new scheme for the computation of dispersive interactions from first principles is presented. This cost-effective approach relies on a Wannier function representation compatible with density function theory descriptions. This is an…

材料科学 · 物理学 2025-02-04 Diem Thi-Xuan Dang , Dai-Nam Le , Lilia M. Woods

We investigate experimentally the transport properties of single-walled carbon nanotube bundles as a function of temperature and applied current over broad intervals of these variables. The analysis is performed on arrays of nanotube…

材料科学 · 物理学 2009-11-13 M. Salvato , M. Cirillo , M. Lucci , S. Orlanducci , I. Ottaviani , M. L. Terranova , F. Toschi

In a recent paper Liang {\it et al.} [Nature {\bf 411}, 665 (2001)] showed experimentally, that metallic nanotubes, strongly coupled to external electrodes, may act as coherent molecular waveguides for electronic transport. The experimental…

介观与纳米尺度物理 · 物理学 2009-11-07 S. Krompiewski , J. Martinek , J. Barnas

Large area van der Waals (vdW) thin films are assembled materials consisting of a network of randomly stacked nanosheets. The multi-scale structure and the two-dimensional nature of the building block mean that interfaces naturally play a…

We consider the effective mass model of spinless electrons in single wall carbon nanotubes that is equivalent to the Dirac equation for massless fermions. Within this framework we derive all possible energy independent hard wall boundary…

介观与纳米尺度物理 · 物理学 2009-11-10 Edward McCann , Vladimir I. Fal'ko

This article reviews a new and general theory of nonuniform fluids that naturally incorporates molecular scale information into the classical van der Waals theory of slowly varying interfaces. The method optimally combines two standard…

统计力学 · 物理学 2015-06-24 John D. Weeks
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