نتایج جستجو برای: van der waals force

تعداد نتایج: 388325  

2008
Grzegorz Koczyk Igor N. Berezovsky

Domain hierarchy and closed loops (DHcL) (http://sitron.bccs.uib.no/dhcl/) is a web server that delineates energy hierarchy of protein domain structure and detects domains at different levels of this hierarchy. The server also identifies closed loops and van der Waals locks, which constitute a structural basis for the protein domain hierarchy. The DHcL can be a useful tool for an express analys...

Journal: :Science 2014
S Dai Z Fei Q Ma A S Rodin M Wagner A S McLeod M K Liu W Gannett W Regan K Watanabe T Taniguchi M Thiemens G Dominguez A H Castro Neto A Zettl F Keilmann P Jarillo-Herrero M M Fogler D N Basov

van der Waals heterostructures assembled from atomically thin crystalline layers of diverse two-dimensional solids are emerging as a new paradigm in the physics of materials. We used infrared nanoimaging to study the properties of surface phonon polaritons in a representative van der Waals crystal, hexagonal boron nitride. We launched, detected, and imaged the polaritonic waves in real space an...

2004
G. M. Kremer

The evolution of a Universe confined onto a 3-brane embedded in a five-dimensional space-time is investigated where the cosmological fluid on the brane is modeled by the van der Waals equation of state. It is shown that the Universe on the brane evolves in such a manner that three distinct periods concerning its acceleration field are attained: (a) an initial accelerated epoch where the van der...

Journal: :Journal of Adhesion Science and Technology 2010

Journal: :Physical chemistry chemical physics : PCCP 2013
Sanliang Ling Matthew B Watkins Alexander L Shluger

We evaluate the performance of different van der Waals (vdW) corrected density functional theory (DFT) methods in predicting the structure of perfect interfaces between the LiF(001), MgO(001), NiO(001) films on the Ag(001) surface and the resulting work function shift of Ag(001). The results demonstrate that including the van der Waals interaction is important for obtaining accurate interface s...

2016
Han Wang Junhyeok Bang Yiyang Sun Liangbo Liang Damien West Vincent Meunier Shengbai Zhang

The success of van der Waals heterostructures made of graphene, metal dichalcogenides and other layered materials, hinges on the understanding of charge transfer across the interface as the foundation for new device concepts and applications. In contrast to conventional heterostructures, where a strong interfacial coupling is essential to charge transfer, recent experimental findings indicate t...

Journal: :Nature communications 2013
Kaihui Liu Xiaoping Hong Muhong Wu Fajun Xiao Wenlong Wang Xuedong Bai Joel W Ager Shaul Aloni Alex Zettl Enge Wang Feng Wang

Van der Waals-coupled materials, ranging from multilayers of graphene and MoS(2) to superlattices of nanoparticles, exhibit rich emerging behaviour owing to quantum coupling between individual nanoscale constituents. Double-walled carbon nanotubes provide a model system for studying such quantum coupling mediated by van der Waals interactions, because each constituent single-walled nanotube can...

Journal: :The journal of physical chemistry. B 2005
Xuhui Huang Ruhong Zhou Bruce J Berne

We perform molecular dynamics simulations of the hydrophobic collapse of two paraffin plates to examine how the collapse is mediated by realistic paraffin-water attractive van der Waals forces. We explore several aspects of the drying transition between the plates, including the critical separation for drying and the critical size of the vapor bubble required for the nucleation of the drying ev...

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