van der Waals interactions


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van der Waals interactions

the weak bonds formed between electrically neutral molecules or parts of molecules when they lie close together. Such interactions are common in the secondary and tertiary structure of protein.
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The interaction forces between ligand and protein was mainly via electrostatic interactions, hydrogen bonding and Van der Waals interactions.
The classical DLVO theory only considers the electrostatic and van der Waals interaction and fails when the surfaces are very hydrophilic or hydrophobic, for which the contact angle of water is less than 15[degrees] (hydration forces) or greater than 64[degrees] (hydrophobic forces) [21].
Next step in CNT research is incorporation or, better said, further investigation of the influence of van der Waals interactions on MWNT properties, i.
Therefore, attention was focused on systematic calculations of the energies of van der Waals interactions.
The dimensionless form of the van der Waals interaction force between a sphere and a flat plate is approximated by (Suzuki et al.
The instrument records the deflection of the cantilever due to force interactions--for example Van der Waals interactions, ionic repulsion, or magnetic and electrostatic forces--to image the sample.
Among specific topics are van der Waals interactions and the hydrophobic effect, molecular imprinting and sensor development, fluorescent detection principles and strategies, and molecular recognition elements for detecting toxins and pathogens.
The intermolecular interaction energy is considered as the sum of two contributions (46): one is due to the electromagnetic effects of electron clouds and leads to van der Waals interactions, the other is due to the surface charge effects and leads to electrostatic interactions.
Since both PE and iPP are simple hydrocarbons interacting with each other through non-directional van der Waals interactions, one would expect that these two polymers would be miscible in the liquid state.
Weak forces called van der Waals interactions hold the threads together end-to-end.