We review the theory of prewetting and wetting transitions in relation to recent studies of noble gas and H2 adsorption on alkali metal surfaces. An essential feature is that the adsorption potentials have extremely small well depths. Open theoretical issues include the accuracy of the potentials, the approximations used in the statistical mechanics, and dynamical effects of the substrate. New adsorbates and substrates are discussed.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering