The New Mechanism of Physical Adsorption on Solid Surface. I. Adsorption of Nonpolar Molecules

Lozovski, V.; Khudik, B. I.

doi:10.1002/pssb.2221580212

Cited by 10 publications

(3 citation statements)

References 15 publications

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“…The enhancement factor is roughly given by

{(\frac{normalℏ ω_{0}}{α^{2} / | β |})}^{- 1 / 3}

, where

ω_{0}

is the characteristic frequency of the dipole oscillations. We have also shown that an accurate treatment of nonlinearity does not lead to any repulsive forces, contrary to some recent theoretical claims . Our results may be important for theoretical understanding of Van der Waals interactions in systems of alkali‐halide molecular clusters with the anomalously large polarizability [11].…”

Section: Discussionmentioning

confidence: 70%

“…, one can see that a careless extrapolation of the weak‐coupling perturbative expression, valid for large distances, on the regime of strong coupling leads to a spurious repulsion at short distances close to the mode softening point. Such an artifact strongly resembles the nonlinearity‐induced repulsive Van der Waals interaction on the basis of a weak‐coupling perturbative treatment .…”

Section: Discussionmentioning

confidence: 92%

“…There are several theoretical works, studying a similar scenario of mode softening in presence of nonlinearity, for various setups of physisorption (point‐like or ellipsoidal particles interacting with a dielectric or metallic surface, with and without surface plasmon waves) . The above works came to the conclusion that nonlinearity causes the emergence of a strong repulsive contribution to the Van der Waals force at short distances, leading to the Lennard‐Jones type interaction potential.…”

Section: Introductionmentioning

confidence: 99%

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On short‐range enhancement of Van‐der‐Waals forces

Makhnovets

Kolezhuk

2016

Materialwissenschaft Werkst

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We show that for nanoparticles with giant polarizability  (a prominent example being the recently studied Na 14 F 13 molecular clusters) van der Waals forces are significantly enhanced at interparticle distances shorter than. For an adequate description of this phenomenon, nonlinear effects must be taken into account. We show that, contrary to some theoretical claims, an accurate treatment of nonlinearity does not lead to any repulsive forces.

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“…The enhancement factor is roughly given by