Interactions with a Macroscopic Particle

As discussed in Section 4.3.3.1, attractive van der Waals interaction follows the 

FIGURE 4.18 The interaction of a molecnle A (dark circle) with a solid formed by molecules B (gray circles). 

FIGURE 4.19 Qualitative comparison of the intermolecular potential (Equation 4.26) and the molecule-surface potential (Equation 4.27). 

2 General Considerations for Molecule-Surface Interactions In the above considerations, it can be seen that contributions to the van der Waals energy of interaction (Section 4.3.3.1.3) at a fixed distance can be described roughly by 

FIGURE 4.20 (a) Schematic depiction of the bonding of two molecules 1 and2inasolvent3 (b) the same for the adsorption of molecules of 1 on a solid 2 in a solvent 3. 

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