Surface Science Reports contains invited review papers on experimental and theoretical studies in the physics, chemistry and pioneering applications of surfaces, interfaces and nanostructures. It covers topics which contribute to a better understanding of basic phenomena occurring on surfaces and interfaces, but also the application of this knowledge to the development of materials, processes and devices. "Surfaces" is defined in this journal to include all interfaces between solids, liquids, polymers, biomaterials, nanostructures, soft matter, gases and/or vacuum. The journal also contains reviews of experimental techniques and methods used to characterize surfaces and surface processes, e.g. those based upon the interactions of photons, electrons and ions with surfaces.