Physisorption by small solid particles

✍ Scribed by M. Schmeits; A.A. Lucas

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 334 KB
• Volume: 35
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(75)85627-2

✦ Synopsis

The formnlexpression of the atnactive part of the van dcr Weals interaction between an atom ax! the surface of 3 solid sphere or a spherial cavity isdetermined.

Aside from the geometria1 effect of the surface cu~~ture one takes BccoCnt of n sizedependence of the dielectric ~uunction. Numerical evllhtion for argon atoms physisorbed on silver spheres shows that the dispersion energy is reduced with respect to the flat surface, whereas it is enhanced in the case of the. atity.

This work describes a calculation

of the van der Waals interaction of a physisorbed atom or molecule with the surface of a spherical particle or a spherical cavity of Wbmacroscopic size (a few tens of a). Aside