Hans-Jürgen Butt studied physics in Hamburg and Göttingen, Germany. Then he went to the Max-Planck-Institute of Biophysics in Frankfurt. After receiving his Ph.D. in 1989 he went as a post-doc to Santa Barbara, California, using the newly developed atomic force microscope. From 1990-95 he spent as a researcher back in Germany at the Max-Planck-Institute for Biophysics. In 1996 he became associate professor for physical chemistry at the University Mainz, three years later full professor at the University of Siegen. Only two years later he joined the Max-Planck-Institute of Polymer Research in Mainz and became director for Experimental Physics. Michael Kappl received his PhD thesis from the Max-Planck-Institute of Biophysics in Frankfurt and worked at the University of Mainz and Siegen. Since 2002 he is a project leader at the Max-Planck-Institute for Polymer Research in Mainz. He concentrates his research activities on Surface Forces and the Interactions of Particle Bubbles as wall as Monolayer Particles.

1. Introduction
2. Van der Waals Forces
3. Experimental Methods
4. Electrostatic Double-layer Forces
5. Capillary Forces
6. Hydrodynamic Forces
7. Interfacial Forces between Fluid Interfaces and across Thin Films
8. Contact Mechanics and Adhesion Friction
9. Solvation Forces and Non-DLVO Forces in Water
10. Surface Forces in Polymer Solutions and Melts
11. Solutions to Exercises