van der Waals force (redirected fromVan der Waals interactions) Medical Encyclopedia van der Waals force n. A weak, short-range attractive force between atoms or molecules caused by their dipole moments, often arising in otherwise nonpolar atoms or molecules from a temporary shift of orbital electr...
van der Waals interactions (expressed in percentages) established between amino acid types and each DNA base (Adenine, Guanine, Cytosine, Thymine).Valeria, MárquezMirandaMaría, Belén CamaradaIngrid, ArayaDuránIgnacio, VarasConchaDaniel, Eduardo Almonacid...
The van der Waals interactions between two parallel graphitic nanowiggles (GNWs) are calculated using the coupled dipole method (CDM). The CDM is an efficient and accurate approach to determine such interactions explicitly by taking into account the discrete atomic structure and many-body effect. ...
Van Der Waals London interactions【机】 范得瓦-伦敦相互作用 Van der Waals attraction范德瓦耳斯引力 van der Waals radius【化】 范德瓦耳斯半径; 范德华半径 Van Der Waals attraction【机】 范得瓦力 johannes van der waalsn. (= Johannes Van Der Waals) 约翰内斯·范德瓦耳斯 ...
van der Waals interactions between atoms and dielectric surfaces are reinvestigated. To describe the nonretarded interaction potential between a dispersive dielectric surface and an atom in an arbitrary internal energy state, we derive a general expression in terms of an integral, over real frequency,...
Van der Waals interactions do take place between charged and polar molecules, as well. However, their effect as cohesive forces is concealed by that of the stronger electrostatic interactions…关键词: van der waals interactions van der waals interactions ...
3.2. Van der Waals forces For particles in natural aqueous systems, Van der Waals forces are attractive. They arise from three types of interactions: those between polar molecules (Keesom forces), those between non-polar molecules that can develop a dipole moment in an electric field (Debye for...
van der Waals interactions between a molecule and a small metallic sphereA calculation of the van der Waals contribution to the physisorption energy is performed for molecules interacting with small metallic spheres. The induction contribution is introduced by using the first field gradient ...
It has long been surmised, as a theoretical curiosity, that conditions could arise under which the sign of the van der Waals interaction between two different uncharged bodies, surrounded by a liquid, might be negative, i.e. that such bodies would repel each other. This possibility is ...
and illustrated by means of a typical example, that the preferential attraction between hydrophobic determinants immersed in water, commonly alluded to as the "hydrophobic effect", can be entirely ascribed to van der Waals interactions. Qu... CJV Oss,DR Absolom,AW Neumann - 《Colloid & Polymer...