Mergia Konstantina (Dina)

Director of Research

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+30 210 6503706

Dr K. Mergia is scientific responsible and co-ordinator for the Materials Science Programme of the EUROfusion Programme of the Hellenic Research Unit. She is a member of the Fusion of Energy (F4E) Governing Board. She has represented Greece in the Εuropean Fusion Development Agreement Steering Committee and Technology Subcommittee. She is member of the reviewer panel at the Ion Beam Centre of the Helmholtz-Zentrum Dresden-Rossendorf, Germany. She is National representative in the European Neutron Scattering Association (ENSA) since 2008. 

Her research topics refer to radiation damage studies, plasma facing materials and components, phase transformations and transport phenomena, ceramic-metal interactions, surface oxidization phenomena, material engineering (porosity, internal stresses, oxidation barriers, materials joining) and magnetic materials (FeCr alloys and steels, magnetic thin films, spin-glasses).

She has been scientific responsible and work-package leader for several European and IAEA projects and tasks of the European Fusion Programme. The total funding obtained for these projects was 4.5 M€ (2003-2020). Research areas of these projects are on fusion materials, materials for extreme environments and aerospace materials and components.

She has authored more than 70 publications in peer reviewed journals, more than 80 publications in conference proceedings and more than 100 scientific reports. She is acting as a referee in 12 journals. She has strong collaborative links with many eminent European Research Centres and Universities such as Rutherford Appleton Laboratories, UK, SCK CEN, Belgium, Culham Centre for Fusion Energy, UKAEA, UK, Helmholtz-Zentrum Dresden-Rossendorf, Germany, TECNALIA Research and Innovation, Spain, Technical University of Turin, Italy, Polish Academy of Science, Institute of Physics, Poland.  These collaborative links have been materialized through common publications and research projects.

She has developed extensive laboratory facilities for the investigation of the structure and nanostructure of materials, mechanical properties, defects and impurities in materials, electrical properties of materials, sample fabrication and metallography laboratory, cryogenic/high temperature systems.




V. Chatzikos, K. Mergia , E. Manios, S. Dellis, D. Papadakis, D. Terentyev, G.  Bonny, A. Dubinko, I.E. Stamatelatos and S. Messoloras. Evolution of microstructure in neutron irradiated cold rolled tungsten and its correlation with mechanical properties. Fusion Engineering and Design (under review) [Preprint]
D. Papadakis, S. Dellis, K. Mergia, D. Terentyev, G.  Bonny, A. Dubinko, W.Van Renterghem, M. Konstantinovic and S. Messoloras. The competing effects of temperature and neutron irradiation on the microstructure and mechanical properties of ITER grade tungsten. Fusion Engineering and Design (under review) [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 modelling. Journal of Nuclear Materials (under review) [Preprint]
P. Tsavalas, A. Lagoyannis, K. Mergia, E. Ntemou, C. P. Lungu. (2020). Differential cross sections of the deuteron reactions on beryllium at energies and angles suitable for nuclear reaction analysisNuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms 479, 205-210.
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)
K. Mergia, E. O. Tsompopoulou, S. Dellis, C. H. Marrows, I. Michelakaki, C. Kinane, A. Caruana, S. Langridge, A. P. Douvalis, C. Cabet, S. Messoloras. (2020). Phase stability of Fe-5at%Cr and Fe-10at%Cr films under Fe+ ion irradiation. Journal of Physics: Condensed Matter, 32, 185702.
Vassilios Ioannou-Sougleridis, Stamatios Alafakis, Nikolaos Vouroutzis, Konstantina Mergia, Athanassios Speliotis, and Dimitrios Skarlatos. (2020). Degradation of Pt-Al2O3-Ge Metal oxide semiconductor structures due to Pt-Al2O3 induced reactionsJournal of Solid State Science and Technology 9, 024003 []


A.P. Kerasidou, A. Bardakas, M. Botzakaki, S.N. Georga, C.A. Krontiras, K. Mergia, V.P. Psycharis, C.Tsamis. (2019). Growth of ZnO nanowires on seeding layers deposited by ALD: The influence of process parameters. Microelectronic Engineering 217, 111091
C.R. Nobs, L.W. Packer, P. Batistoni, B. Colling, Z. Ghani, M. Gilbert, S. Loreti, K. Mergia, S. Messoloras, I. Michelakaki, M. Pillon, M.I. Savva, I.E. Stamatelatos, K. Triantou, T. Vasilopoulou. (2019) Neutron Spectrum Unfolding for the Development of a Novel Neutron Detector for Fusion, Fusion Engineering and Design 146, 2658-2662,
M.I. Savva, T. Vasilopoulou, C.R. Nobs, P. Batistoni, B. Colling, Z. Ghani, M. Gilbert, S. Loreti, K. Mergia, S. Messoloras, I. Michelakaki, L.W. Packer, M. Pillon, I.E. Stamatelatos, K. Triantou. (2019). VERDI detector benchmark experiment at the ENEA 14 MeV Frascati Neutron Generator, Fusion Engineering and Design 146, Part B, 1877-1881,


E. Padovano, C. Badini, K. Mergia and J. Barcena. (2018). "Thermophysical and radiative properties of pressureless sintered SiC and ZrB2-SiC laminates" Ceramics International 44,15050-15057


Jorge Barcena, Kostoula Triantou, Konstantina Mergia, Beatriz Perez, Sonia Florez, Iñaki Garmendia, Gregory Pinaud, Jean-Marc Bouilly and Wolfgang P.P. Fischer, “Infra-Red and vibration tests of hybrid ablative/ceramic matrix technological breadboards for earth re-entry thermal protection systems”, Acta Astronautica 134 (2017) 85-97
Krimpalis, Spyros; Mergia, K; Messoloras, S; Dubinko, Andrii; Terentyev, Dmitry; Triantou, Kostoula; Reiser, Jens; Pintsuk, G "Comparative Study of the Mechanical Properties of Different Tungsten Materials for Fusion Applications", Phys. Scr. T170, 014068.
Tsavalas, P., Lagoyannis, A., Mergia, K., Rubel, M., Triantou, K., Harissopulos, S., … Contributors, J. (2017). Be ITER-like wall at the JET tokamak under plasma. Physica Scripta, 2017(T170), 014049. doi:10.1088/1402-4896/aa8ff4
K. Triantou, B. Perez, A. Marinou, S. Florez, K. Mergia, G. Vekinis, J. Barcena, W. Rotärmel, C. Zuber, À. de Montbrun. (2017). “Performance of cork and ceramic matrix composite joints for re-entry thermal protection structures”, Composites Part B 108, 270-278.
A. Lagoyannis, P. Tsavalas, K. Mergia, G. Provatas, K. Triantou, E. Tsompopoulou, P. Petersson, M. Rubel, A. Widdowson, S. Harissopulos, T.J. Mertzimekis, and the JET contributors. (2017). “Surface composition and structure of divertor tiles following the JET tokamak operation with the ITER-like wall”, Nuclear Fusion  57, 076027.
K. I. Triantou, K. Mergia, B. Perez, S. Florez, A. Stefan, C. Ban, G. Pelin, G. Ionescu, C. Zuber, W.P.P. Fischer and J. Barcena. (2017). “Thermal shock performance of carbon-bonded carbon fiber composite and ceramic matrix composite joints for thermal protection re-entry applications”, Composites Part B 111, 270-278.


C. Jimenez, K. Mergia, M. Lagos, P. Yialouris, I. Agote, V. Liedtke, E.  Padovano, C. Badini, C. Wilhelmi, S. Messoloras, J. Barcena. (2016). “Joining of ceramic matrix composites to high and ultra high temperature ceramics for thermal protection systems”, Journal of the European Ceramic Society 36, 443-449.
A. Kaidatzis, V. Psycharis, K. Mergia and D. Niarchos. (2016). “Annealing effects on the structural and electrical properties of sputtered tungsten thin films”, Thin Soild Films 619, 61-67.
Apostolopoulos, George & Lukianova, V & Kotsina, Z & Lagoyannis, Anastasios & Mergia, Konstantina & Harissopulos, Sotirios & Messoloras, Spyros. (2016). The influence of carbon on the resistivity recovery of proton irradiated Fe-11 at.% Cr alloys. Nuclear Materials and Energy. doi:10.1016/j.nme.2016.09.007 [Accepted manuscript]