Evangelos P. Favvas is a Senior Researcher at the Institute of Nanoscience and Nanotechnology in NCSR “Demokritos?, Athens - Greece. He has 80 scientific papers in peer-reviewed journals and 100 articles in international congresses; editor of 2 scientific books, 2 Greek and 4 worldwide patents. His research interests embrace the experimental study of gas separation, with emphasis on carbon dioxide and hydrogen separations, using membranes, sorbents and hybrid porous materials. The in-situ study of condensation process using the combination of X-ray and neutron scattering and adsorption techniques is another filed of his interests.