van der Waals force

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 electrons to one side of one atom or molecule.

[After Johannes Diderik van der Waals.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

van der Waals force

(văn′ dər wôlz′)

A weak force of attraction between electrically neutral molecules that collide with or pass very close to each other. The van der Waals force is caused by temporary attractions between electron-rich regions of one molecule and electron-poor regions of another. These attractions are very common but are much weaker than chemical bonds. The van der Waals force is what allows water vapor to condense into liquid water.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Translations

van der Waalsin voima

van der Waalskracht

van der Waalskraft

Mentioned in

References in periodicals archive

The homogeneous dispersion of CNT within the epoxy matrix is a great challenge as CNT tends to agglomerate due to the strong Van der Waals interactions between the CNT and the low viscosity of the matrix.

Epoxy--MWCNT Composites Prepared from Master Batch and Powder Dilution: Effect of Ionic Liquid on Dispersion and Multifunctional Properties

Covalent and noncovalent (hydrogen bonds and van der Waals interactions) functionalizations play a principle role in the drug delivery systems.

Quantum Mechanical Study on the Mechanistic, Energetic and Structural Aspects of Adsorption of 2-methoxyestradiol Drug on Functionalized Carbon Nanotube

The latter contains an empirical dispersion correction to the [omega] B97X functional, as this provides long-range van der Waals interactions without additional computational cost.

Study of the Deformation/Interaction Model: How Interactions Increase the Reaction Barrier

To maintain the same environment CHARMM v27 force field was used along with a cutoff of 12 [Angstrom] for the van der Waals interactions and short-ranged Coulombic interactions, while the particle-particle mesh Ewald method was used for the long-ranged Coulombic interactions.

Trends in the Binding of Cell Penetrating Peptides to siRNA: A Molecular Docking Study

The TE model also considers hydrodynamics and van der Waals interactions in this regime (TUFENKJI; ELIMELECH, 2004) (JACOBS et al.

Proposal for initial collection efficiency models for direct granular upflow filtration/Proposta de modelos para o calculo da eficiencia inicial de remocao de particulas na filtracao granular direta ascendente

Because of their chemical makeup, both substances should have had similar degrees of van der Waals interactions with the geckos' setae, and therefore the animals should have clung similarly to both surfaces, Izadi says.

Gecko adhesion takes electric turn: study challenges explanation for lizards' supersticky feet

The van der Waals interactions are highlighted when the distances between the atoms are equal or 20% smaller than the sum of van der Waals radii.

Physicochemical analysis and molecular modeling of the fosinopril [beta]-cyclodextrin inclusion complex

The intermediate IN1 is formed when the sulfur atom bridged to the oxygen atoms of [O.sub.4] using the formation of four van der Waals bonds and rupture two [O.sub.2]-[O.sub.2] van der Waals interactions in [O.sub.4] molecule.

Prediction of tetraoxygen reaction mechanism with sulfur atom on the singlet potential energy surface