His published work includes 77 peer-reviewed papers in scientific journals or book chapters, with over 1700 citations (h=25) and several invited seminars in Greece, Europe and the USA. In 2009 and 2018 he received NASA awards for his contribution in the Cassini mission to Saturn and in 2008 he was elected by the Editorial Board of Annales Geophysicae as best reviewer in the field of Magnetospheric Physics. He has experience in the management of research programs and he serves as evaluator for proposals submitted for funding to NASA, the EC and national funding agencies in Europe. He leads or participates to research groups in Space Science and Applications in collaboration with institutes from Europe and the USA. Dr. Sergis has supervised or co-supervised PhD, MSc and undergraduate theses in Greece and abroad. He is a member of the American Geophysical Union (AGU), the European Geosciences Union (EGU) and the International Astronomical Union (IAU).