Structural and dynamical properties of surfaces are of considerable importance for the elucidation of surface phenomena. For example the adsorption of particles and chemical reactions at surfaces are influenced by these properties. Also the electronic surface states of electronic device materials (e.g. Schottky barrier diodes and metal-insulator-semiconductor devices) depend critically on the structure of the semiconductor surface and the overlayers. As in Structure and Dynamics of Surfaces I this Topics volume considers the problems at the mircoscopic level. It deals with ordered and disordered as well as harmonic and anharmonic surface effects. Novel experimental techniques and theoretical developments which have been applied successfully during the last decade are integrated. The contributions of this volume also include the background of the subject typical results and in most cases trends of future developments.