Dr. Michail Michailov: Associate Professor at Institute of Physical Chemistry, Bulgarian Academy of Sciences, Sofia. Invited researcher at Institute of Solid State Physics, University of Hannover and at French National Center for Scientific Research (CNRS) – Nancy, Marseille and Paris; Invited lecturer at Swiss Federal Institute of Technology (EPFL), University of Lausanne; Expert in the field of two-dimensional phase transitions and atomic structure of surfaces and interfaces. Author of experimental and theoretical studies in nanoscale surface physics including properties of epitaxial interfaces, order-disorder phenomena in atomic monolayers, diffusion of clusters and surface-confined intermixing phenomena. Initiator of STRANSKI-KAISCHEW workshops series in Surface Science held since 1994.