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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…

Quantum Physics · Physics 2009-02-17 Agnes Sambale , Stefan Yoshi Buhmann , Dirk-Gunnar Welsch , Ho Trung Dung

Van der Waals (vdW) heterostructures are receiving great attentions due to their intriguing properties and potentials in many research fields. The flow of charge carriers in vdW heterostructures can be efficiently rectified by the…

Mesoscale and Nanoscale Physics · Physics 2017-04-06 Yang Tan , Xiaobiao Liu , Zhiliang He , Yanran Liu , Mingwen Zhao , Han Zhang , Feng Chen

We theoretically examined how the dielectric screening of two-dimensional layered materials affects the dipolar interaction between interlayer excitons in few-layer van der Waals structures. Our analysis indicates that the dipolar…

Mesoscale and Nanoscale Physics · Physics 2024-02-14 Yuhang Hou , Hongyi Yu

Van der Waals (vdW) layered materials have rather weaker interlayer bonding than the intra-layer bonding, therefore the exfoliation along the stacking direction enables the achievement of monolayer or few layers vdW materials with emerging…

We use multipolar expansions to find the force on a gold coated sphere above a gold substrate; we study both an empty gold shell and a gold coated polystyrene sphere. We find four characteristic separation ranges. In the first region, which…

Quantum Physics · Physics 2014-11-03 Carlos E. Román-Velázquez , Bo E. Sernelius

The method recently developed to include Van der Waals interactions in the Density Functional Theory by using the Maximally-Localized Wannier functions, is improved and extended to the case of atoms and fragments weakly bonded (physisorbed)…

Other Condensed Matter · Physics 2009-11-13 Pier Luigi Silvestrelli , Karima Benyahia , Sonja Grubisic Francesco Ancilotto , Flavio Toigo

van der Waals stacking of two-dimensional (2D) materials offers a powerful platform for engineering material interfaces with tailored electronic and optical properties. While most van der Waals multilayers have featured inorganic…

We consider the van der Waals interaction of an excited atom and a ground state atom across a vacuum-medium interface under the circumstances of the resonant coupling of the excited atom to a surface polariton mode of the system. We…

Quantum Physics · Physics 2015-05-13 Marin-Slobodan Tomas

Pecularities of isentropic expansion of warm dense matter (WDM) created by intense energy fluxes are under discussion in situation when thermodynamic trajectory of such expansion crosses binodal of liquid-gas phase transition and expansion…

Plasma Physics · Physics 2013-06-13 D. S. Borovikov , I. L. Iosilevskiy

Layered and nanotubular systems that are metallic or graphitic are known to exhibit unusual dispersive van der Waals (vdW) power laws under some circumstances. In this letter we investigate the vdW power laws of bulk and finite layered…

Materials Science · Physics 2012-08-28 Tim Gould , Evan Gray , John F. Dobson

We study the effect of dielectric anisotropy of polymers on their equilibrium ordering within mean-field theory but with a formalism that takes into account the full n-body nature of van der Waals forces. Dielectric anisotropy within…

Soft Condensed Matter · Physics 2013-12-18 David S. Dean , Rudolf Podgornik

We explain in depth the previously proposed theory of the coherent Van der Waals(cVdW) interaction - the counterpart of Van der Waals (VdW) force - emerging in spatially coherently fluctuating electromagnetic fields. We show that cVdW…

Soft Condensed Matter · Physics 2015-06-22 Igor M. Kulic , Miodrag L. Kulic

Properties of many layered materials, including copper- and iron-based superconductors, topological insulators, graphite and epitaxial graphene can be manipulated by inclusion of different atomic and molecular species between the layers via…

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…

Materials Science · Physics 2015-06-19 Wei Gao , Penghao Xiao , Graeme Henkelman , Kenneth M. Liechti , Rui Huang

Our understanding of both structure and dynamics of adsorbed liquids heavily relies on the capillary wave Hamiltonian, but a thorough test of this model is still lacking. Here we study the capillary wave fluctuations of a liquid film with…

Soft Condensed Matter · Physics 2013-09-06 Luis G. MacDowell , Jorge Benet , Nebil A. Katcho

Alkali metal intercalation is an important strategy for doping van der Waals materials. Lithium, in particular, was shown to achieve exceptional charge carrier densities, reaching levels at which fundamental electrical, optical, and…

We investigate the lateral van der Waals (vdW) force between an anisotropic polarizable particle and a perfectly conducting plane with a hemispherical protuberance with radius $R$. We predict, via an exact calculation, a sign inversion in…

Quantum Physics · Physics 2023-03-08 Lucas Queiroz , Edson C. M. Nogueira , Danilo T. Alves

Wetting behaviour of surfaces is believed to be affected by van der Waals (vdW) forces, however, there is no clear demonstration of this. With the isolation of two-dimensional vdW layered materials it is possible to test this hypothesis. In…

Mesoscale and Nanoscale Physics · Physics 2022-01-26 Meenakshi Annamalai , Kalon Gopinadhan , Sang A Han , Surajit Saha , Hye Jeong Park , Eun Bi Cho , Brijesh Kumar , Sang-Woo Kim , T Venkatesan

Graphene monolayers supported on oxide substrates have been demonstrated with superior charge mobility and thermal transport for potential device applications. Morphological corrugation can strongly influence the transport properties of the…

Mesoscale and Nanoscale Physics · Physics 2015-05-18 Zachary H. Aitken , Rui Huang

We have studied two interchange layer systems, (i) free standing partly hydrogenated graphene (graphone), and (ii) graphone on the Nickel (111) surface, to assess various density functional theory based computational schemes incorporating…

Materials Science · Physics 2022-04-26 Magdalena Birowska , Maciej Marchwiany , Claudia Draxl , Jacek. A. Majewski
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