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We calculate the Casimir force or dispersive van der Waals force between a spherical nanoparticle and a planar substrate, both with arbitrary dielectric properties. We show that the force between a sphere and a plane can be calculated…

Other Condensed Matter · Physics 2007-05-23 Cecilia Noguez , C. Roman-Velazquez

Exchange-correlation functionals with corrections for van der Waals interactions (PBE-D2, PBE-D3, PBE-D3(BJ), PBE-TS, optPBE-vdW and vdW-DF2) are tested for graphene and hexagonal boron nitride, both in the form of bulk and bilayer. The…

Mesoscale and Nanoscale Physics · Physics 2018-08-22 Irina V. Lebedeva , Alexander V. Lebedev , Andrey M. Popov , Andrey A. Knizhnik

We predict a new family of robust two-dimensional (2D) topological insulators in van der Waals heterostructures comprising graphene and chalcogenides BiTeX (X=Cl, Br and I). The layered structures of both constituent materials produce a…

Materials Science · Physics 2014-12-25 Liangzhi Kou , Shu-Chun Wu , Claudia Felser , Thomas Frauenheim , Changfeng Chen , Binghai Yan

Van der Waals single-layer materials are characterized by an inherent extremely low bending rigidity and therefore are prone to nanoscale structural modifications due to substrate interactions. Such interactions can induce excess charge…

The van der Waals forces across a very thin liquid layer (nanofilm) in contact with a plane solid wall make the liquid nonhomogeneous. The dynamics of such flat liquid nanofilms is studied in isothermal case. The Navier-Stokes equations are…

Classical Physics · Physics 2008-09-23 Henri Gouin , Sergey Gavrilyuk

Research on two-dimensional materials has expanded over the past two decades to become a central theme in condensed matter research today. Significant advances have been made in the synthesis and subsequent reassembly of these materials…

Van der Waals heterostructures composed of multiple few layer crystals allow the engineering of novel materials with predefined properties. As an example, coupling graphene weakly to materials with large spin orbit coupling (SOC) allows to…

The generalized van der Waals equation for anisotropic fluids in porous media, proposed by the authors in previous works, is used to describe the effect of porous media on the phase behavior of polypeptide solutions. By introducing the…

Soft Condensed Matter · Physics 2022-10-04 V. I. Shmotolokha , M. F. Holovko

When two-dimensional van der Waals materials are stacked to build heterostructures, moir\'e patterns emerge from twisted interfaces or from mismatch in lattice constant of individual layers. Relaxation of the atomic positions is a direct,…

Mesoscale and Nanoscale Physics · Physics 2023-03-15 Dorri Halbertal , Lennart Klebl , Valerie Hsieh , Jacob Cook , Stephen Carr , Guang Bian , Cory Dean , Dante M. Kennes , Dmitri. N. Basov

Weyl semimetal (WSM) states can be achieved by breaking spatial-inversion symmetry or time reversal symmetry. However, the anisotropy of the energy reduction contributing to the emergence of WSM states has seldom been investigated by…

We investigate the influence of dynamic heterogeneity on the spectral shape of structural relaxation in van der Waals liquids above the melting point by means of depolarized dynamic light scattering. To this end, we study optically…

Soft Condensed Matter · Physics 2026-02-17 Rolf Zeißler , Niklas Pfeiffer , Thomas Blochowicz

Van der Waals materials enable the construction of atomically sharp interfaces between compounds with distinct crystal and electronic properties. This is dramatically exploited in moir\'e systems, where a lattice mismatch or twist between…

As mechanical structures enter the nanoscale regime, the influence of van der Waals forces increases. Graphene is attractive for nanomechanical systems because its Young's modulus and strength are both intrinsically high, but the mechanical…

Mesoscale and Nanoscale Physics · Physics 2015-05-28 Steven P. Koenig , Narasimha G. Boddeti , Martin L. Dunn , J. Scott Bunch

Fine powders often tend to agglomerate due to van der Waals forces between the particles. These forces can be reduced significantly by covering the particles with nanoscaled adsorbates, as shown by recent experiments. In the present work a…

Materials Science · Physics 2007-05-23 D. Kurfess , H. Hinrichsen , I. Zimmermann

The structural and elastic properties of orthorhombic black phosphorus have been investigated using first-principles calculations based on density functional theory. The structural parameters have been calculated using the local density…

Materials Science · Physics 2015-06-12 S. Appalakondaiah , G. Vaitheeswaran , S. Lebegue , N. E. Christensen , A. Svane

Recently, two-dimensional (2D) materials with strong in-plane anisotropic properties such as black phosphorus have demonstrated great potential for developing new devices that can take advantage of its reduced lattice symmetry with…

Mesoscale and Nanoscale Physics · Physics 2016-05-05 Huan Zhao , Jiangbin Wu , Hongxia Zhong , Qiushi Guo , Xiaomu Wang , Fengnian Xia , Li Yang , Ping-Heng Tan , Han Wang

We report measurements of antiferromagnetic resonances in the van der Waals easy-axis antiferromagnet CrSBr. The interlayer exchange field and magnetocrystalline anisotropy fields are comparable to laboratory magnetic fields, allowing a…

A method for the separation and quantitative characterization of the electrostatic and Van der Waals contribution to tip-sample interaction in non-contact Scanning Force Microscopy is presented. It is based on the simultaneous measurement…

Materials Science · Physics 2007-11-06 Elisa Palacios-Lidon , Jaime Colchero

Manipulating the interlayer magnetic coupling in van der Waals magnetic materials and heterostructures is the key to tailoring their magnetic and electronic properties for various electronic applications and fundamental studies in condensed…

Materials Science · Physics 2020-08-19 Zhe Li , Jiaheng Li , Ke He , Xiangang Wan , Wenhui Duan , Yong Xu

This study delves into the intriguing properties of 1H/1T-TaS$_2$ van der Waals heterostructure, focusing on the transparency of the 1H layer to the Charge Density Wave of the underlying 1T layer. Despite the sizable interlayer separation…

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