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Scaling predictions for ‘wet’ adhesion models. Scaling coefficients are given for the assumption that fluid film thickness h depends on contact radius R as h ∝ RH, with 0 ≤ H ≤ 1 (see appendix B and the electronic supplementary material for details).
| force type (geometry) | scaling coefficient |
|---|---|
| Laplace pressure (rigid plates) | m(2−H)/3 |
| viscous (Stefan) adhesion (rigid plates) | m(4−3H)/3 |
| viscous adhesion (sphere) | m(2−H)/3 |
| friction (rigid plates) | m(2−H)/3 |
