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Within the framework of macroscopic quantum electrodynamics, the resonant van der Waals potential experienced by an excited two-level atom near a planar magneto-electric two-layer system consisting of a slab of left-handed material and a…

量子物理 · 物理学 2009-02-17 Agnes Sambale , Stefan Yoshi Buhmann , Dirk-Gunnar Welsch , Ho Trung Dung

We investigate the geometry, stability, electronic structure and optical properties of C24H12 coronenes encapsulated in a single-wall (19,0) carbon nanotube. By an adequate combination of advanced electronic-structure techniques, involving…

介观与纳米尺度物理 · 物理学 2012-08-02 Yannick J. Dappe , José I. Martínez

By using a newly fitted multi-parameter potential to describe the van der Waals interaction between carbon and molecular hydrogen, we study the hydrogen storage inside carbon nanotubes (CNT's) under pressure in gigapascal range. Comparing…

材料科学 · 物理学 2007-07-09 X. H. Zhang , X. G. Gong , Z. F. Liu

We provide a simple scheme for predicting the electronic structure of van-der-Waals bound systems, based on the mere knowledge of the electronic structure of the subunits. We demonstrate this with the example of nano-peapods, consisting of…

材料科学 · 物理学 2013-01-21 Matus Milko , Peter Puschnig , Claudia Draxl

We demonstrate that free graphene sheet edges can curl back on themselves,reconstructing as nanotubes. This results in lower formation energies than any other non-functionalised edge structure reported to date in the literature. We…

Heat transfer at the liquid/solid interface, especially at the nanoscale, has enormous importance in nanofluids. This study investigates liquid/solid interfacial thermal resistance and structure of the formed molecular nanolayer around a…

软凝聚态物质 · 物理学 2019-03-29 Fatemeh Jabbari , Ali Rajabpour , Seyfollah Saedodin , Somchai Wongwises

We report the observation of Coulomb drag between a two-dimensional (2D) electron gas in graphene and a one-dimensional (1D) wire composed of a carbon nanotube. We find that drag occurs when the bulk of graphene is conducting, but is…

介观与纳米尺度物理 · 物理学 2017-10-19 Jean-Damien Pillet , Austin Cheng , Takashi Taniguchi , Kenji Watanabe , Philip Kim

We compute the $T=0K$ Van der Waals (nonretarded Casimir) interaction energy $E$ between two infinitely long, crossed conducting wires separated by a minimum distance $D$ much greater than their radius. We find that, up to a logarithmic…

其他凝聚态物理 · 物理学 2013-05-29 John F. Dobson , Timothy Gould , Israel Klich

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

Carbon nanotubes are a versatile material in which many aspects of condensed matter physics come together. Recent discoveries, enabled by sophisticated fabrication, have uncovered new phenomena that completely change our understanding of…

介观与纳米尺度物理 · 物理学 2015-08-04 E. A. Laird , F. Kuemmeth , G. Steele , K. Grove-Rasmussen , J. Nygård , K. Flensberg , L. P. Kouwenhoven

Usually, in optical spectra of double-walled carbon nanotubes (DWCNTs) weak van der Waals coupling between the layers leads only to a small shift of transition energies with respect to their values in pristine single-walled nanotubes.…

介观与纳米尺度物理 · 物理学 2020-09-30 D. V. Chalin , S. B. Rochal

We verify that the van der Waals interaction and hence all dispersion interactions for the hydrogen molecule given by: W"= -{A/R^6}-{B/R^8}-{C/R^10}- ..., in which R is the internuclear separation, are exactly soluble. The constants…

量子物理 · 物理学 2011-08-05 T. C. Choy

Magnetic susceptibility $\chi$ of pristine and brominated arc-produced sample of multiwall carbon nanotubes was measured from 4.2 to 400 K. An additional contribution $\Delta \chi(T)$ to diamagnetic susceptibility $\chi(T)$ of carbon…

强关联电子 · 物理学 2009-11-07 A. I. Romanenko , A. V. Okotrub , O. B. Anikeeva , L. G. Bulusheva , N. F. Yudanov , C. Dong , Y. Ni

Interwall interaction energies, as well as barriers to relative sliding of the walls along the nanotube axis, are first calculated for pairs of both armchair or both zigzag adjacent walls of carbon nanotubes with a wide range of radiuses.…

介观与纳米尺度物理 · 物理学 2011-11-11 Andrey M. Popov , Yurii E. Lozovik , Evgenii K. Krivorotov

We study single- and two-atom van der Waals interactions of ground-state atoms which are both polarizable and paramagnetizable in the presence of magneto-electric bodies within the framework of macroscopic quantum electrodynamics. Starting…

量子物理 · 物理学 2010-01-04 Hassan Safari , Dirk-Gunnar Welsch , Stefan Yoshi Buhmann , Stefan Scheel

A GW calculation based on a truncated Coulomb interaction with an added small q limit was applied to 2D van der Waals heterolayered structures, and the Kane dispersion model was used to determine the accurate band gap edge. All ab initio…

材料科学 · 物理学 2025-06-25 Eyasu Tadesse Muda , Tewodros Eyob Ada , Kenate Nemera Nigussa , Cecil N. M. Ouma

We derive a low-energy effective model of metallic zigzag carbon nanotubes at half filling. We show that there are three important features characterizing the low-energy properties of these systems: the long-range Coulomb interaction,…

强关联电子 · 物理学 2009-11-13 Sam T. Carr , Alexander O. Gogolin , Alexander A. Nersesyan

Carbon nanotubes are nano-objects with quite anisotropic properties, for example the mechanical properties in longitudinal and radial directions differ significantly. This feature of the carbon nanotubes yields many interesting phenomena…

介观与纳米尺度物理 · 物理学 2023-10-26 Alexander V. Savin , Margarita Kovaleva

We consider the resonant van der Waals interaction between two correlated identical two-level atoms (at least one of which being excited) within the framework of macroscopic cavity quantum electrodynamics in linear, dispersing and absorbing…

量子物理 · 物理学 2018-05-09 Saeideh Esfandiarpour , Robert Bennett , Hassan Safari , Stefan Yoshi Buhmann

We present a theoretical study of wetting phenomena and interactions between liquid-vapor interfaces based on the density functional theory. The focus is mostly on the impact of long-range van der Waals interactions both within the fluid…

化学物理 · 物理学 2011-11-10 Arik Yochelis , Len M. Pismen