Dellis Spilios

Post-Doctoral Researcher

+30 210 6503741

Dr Spilios Dellis is a post-doctoral researcher at the Fusion Technology Group (FTG) of the Institute of Nuclear and Radiological Sciences and Technology, Energy and Safety of NCSR "Demokritos", since February 2018 and he works in the framework of the European Consortium for the Development of Fusion Energy (EUROfusion).

His research topics refer to the study of radiation damage of metals and alloys for fusion energy applications employing nano/micro indentation and impulse excitation technique.

He received his PhD degree in 2018 from the Physics Department of the Aristotle University of Thessaloniki. His PhD was on the enhancement and tailoring of photoluminescence of semiconductors using metallic nanostructures. He received his MSc in Condensed Matter Physics in 2013 from the Physics Department of the University of Patras. He received his BSc in Physics in 2011 from the Physics Department of the University of Patras.

He has worked in the research projects: “Formation and Characterization of Plasmonic Nanoparticles” (SMARTONICS-FP7, 2017), “Laser Annealing for Improved Flexible Electronics” (EPSRC Centre for Innovative Manufacturing in Large-Area Electronics, 2016), “NANOMEGAS/NANOMEsh Gaseous Structure” (NANOMEGAS, Carathéodory funding scheme 2012-2013).

He has published 7 articles in peer-reviewed scientific journals, and he has participated in 15 contributions in international conferences.



D. Papadakis, K. Mergia, E. Manios, V. Chatzikos, S. Dellis, D. Terentyev, G. Bonny, W. Van Renterghem, C.C. Chang and S. Messoloras. (2023). Defect evolution of neutron irradiated ITER grade tungsten after annealing. Fusion Engineering and Design 189, 113486 doi:10.1016/j.fusengdes.2023.113486 [Accepted manuscript]
S. Dellis, X. Xiao, D. Terentyev, E. Manios and K. Mergia. (2023).  Hardening mechanisms of cold rolled tungsten plate after neutron irradiation: indentation and finite elements modelling. International Journal of Refractory Metals and Hard Materials, 111, 106096. [Accepted manuscript]


S. Pantousa, K. Mergia, A. Ionescu, E. Manios, S. Dellis, C. Kinane, S. Langridge, A. Caruana, U. Kentsch, and S. Messoloras. (2022). Fe+ ion irradiation effects in Fe-10at%Cr films irradiated at 300 °C. Nuclear Materials and Energy. 30, 101147. doi:10.1016/j.nme.2022.101147 [Accepted manuscript] []


Mergia, K., Chatzikos, V., Manios, E., Dellis, S., Papadakis, D., Terentyev, D., Bonny, G., Dubinko, A., Stamatelatos, I.E., and Messoloras, S. (2021). Evolution of microstructure in neutron irradiated cold rolled tungsten and its correlation with mechanical properties, Fusion Engineering and Design 172, 112784 [] []
Papadakis, D., Dellis, S., Chatzikos, V., Manios, E., Stamatelatos, I.E., Messoloras S. and  Mergia K. (2021). Neutron irradiation effects in different tungsten microstructures, Physica Scripta []
Papadakis, D., Dellis, S., Mergia, K., Terentyev, D.,  Bonny, G., Dubinko, A., Van Renterghem, W., Konstantinovic, M., and Messoloras, S. The competing effects of temperature and neutron irradiation on the microstructure and mechanical properties of ITER grade tungstenFusion Engineering and Design 168, 112608. [Preprint]
S. Dellis, Xiazi Xiao, D. Terentyev, K. Mergia , S. Krimpalis,  S. Messoloras and A.Bakaev. Mechanical properties of neutron-irradiated single crystal tungsten W(100) studied by indentation and FEM modellingJournal of Nuclear Materials 551, 152985 [Preprint]


G. Bonny, M.I. Konstantinovic, A. Bakaeva, Y. Chao, N. Castin, K. Mergia, V. Chatzikos, S. Dellis, T. Khvan, A. Bakaev, A. Dubinko, D. Terentyev. (2020). Trends in vacancy distribution and hardness of high temperature neutron irradiated single crystal tungsten”. Acta Materialia (in press)