isotopes, geochemistry, authenticity, traceability, palaeodiet, palaeclimate, mobility


Maria-Kleopatra Tassi graduated from Physics Department of National and Kapodistrian University of Athens (NKUA) in 2007. She received her M.Sc diploma in Microsystem and Nanostructures of National Technical University of Athens (NTUA) in 2009 with master thesis “Composition and Characterization of spherical and linear Fe3O4 nanoparticles for application in Magnetic Resonance Imaging: In vivo experiments”. In 2014 received her Ph.D in Physics from NKUA in collaboration with N.C.S.R “Demokritos” with title “Calculation of excited state of multielectron systems via extended Hartree-Fock method and comparison with other methods”. During her Ph.D studies participated in the research program “ARISTON, Development of nanofunctional surfaces for a cleaner and safer environment” in which she contributed in the characterization of modified titanium dioxide. After her Ph.D studies, she worked from 2014 to 2018 in Physics Department (NKUA), where she studied the properties of different sequences of DNA molecule. In addition, from 2016 to 2018, she was teaching assistant in Technological Education Institute of Piraeus. From 2018-2019 she worked in National Centre for Scientific Research “Demokritos”, participating in the program “Material development with applications in Industry, Health, Environment and Civilization”. From 2019 till today she works in Stable Isotope Unit, N.C.S.R. “Demokritos” where she performs isotopic and chemical characterization of organic materials and natural products. and she is involved in all the programs of the laboratory. Her main research interests lie on the field of material and environmental characterization with analytical technics such as isotope analysis. Specifically, she performs analyses in bones, teeth for palaecological and palaeodiet reconstruction, in food industry products (e.g. wine, milk, honey) for identification of authenticity, in ancient materials (glass, mortar) for investigating their origin and in waters for examining the hydrogeological processes and for palaeoclimate reconstruction. She is, also, involved in the construction of iso-databases and the statistical analysis of them. She has 12 publications in peer-reviewed International journals and she has participated in 20 International conferences.


Karalis, P., Tassi, M., Heliades, E., Diamantopoulos, G., Christaras, V., Spathis, P. and Dotsika, E., Stable Isotopic Composition of Carbonate Materials for Determination of the Origin of Marble Artifacts Lecture Notes in Civil Engineering, Volume 209 LNCE, Pages: 97-101, 2022 [doi]

Karalis, P., Tassi, M., Gougoura, S., Diamantopoulos, G., Kyropoulou, D., Heliades, E., Palaigeorgiou, E. and Dotsika, E., Stable Isotope for Tracing the Salt Involved in the Degradation of Stone Monuments Lecture Notes in Civil Engineering, Volume 209 LNCE, Pages: 102-107, 2022 [doi]

Dotsika, E., Tassi, M., Karalis, P., Chrysostomou, A., Michael, D.E., Poutouki, A.E., Theodorakopoulou, K. and Diamantopoulos, G., Stable Isotope and Radiocarbon Analysis for Diet, Climate and Mobility Reconstruction in Agras (Early Iron Age) and Edessa (Roman Age), Northern Greece Applied Sciences (Switzerland), Volume 12, Article Number: 498, 2022 [doi]

Dotsika, E., Dalampakis, P., Spyridonos, E., Diamantopoulos, G., Karalis, P., Tassi, M., Raco, B., Arvanitis, A., Kolios, N. and Michelot, J.L., Chemical and isotopic characterization of the thermal fluids emerging along the North–Northeastern Greece Scientific Reports, Volume 11, Article Number: 16291, 2021 [doi]

Karalis, P., Poutouki, A.E., Nikou, T., Halabalaki, M., Proestos, C., Tsakalidou, E., Gougoura, S., Diamantopoulos, G., Tassi, M. and Dotsika, E., Isotopic Traceability (13C and 18O) of Greek Olive Oil Molecules (Basel, Switzerland), Volume 25, 2020 [doi]

Lambropoulos, K., Chatzieleftheriou, M., Morphis, A., Kaklamanis, K., Lopp, R., Theodorakou, M., Tassi, M. and Simserides, C., Erratum: Electronic structure and carrier transfer in B-DNA monomer polymers and dimer polymers: Stationary and time-dependent aspects of a wire model versus an extended ladder model (Physical Review E (2016) 94 (062403) DOI: 10.1103/PhysRevE.94.062403) Physical Review E, Volume 102, Article Number: 019901, 2020 [doi]

Mantela, M., Morphis, A., Tassi, M. and Simserides, C., Lowest ionisation and excitation energies of biologically important heterocyclic planar molecules Molecular Physics, Volume 114, Pages: 709-718, 2016 [doi]

Lambropoulos, K., Kaklamanis, K., Morphis, A., Tassi, M., Lopp, R., Georgiadis, G., Theodorakou, M., Chatzieleftheriou, M. and Simserides, C., Wire and extended ladder model predict THz oscillations in DNA monomers, dimers and trimers Journal of Physics Condensed Matter, Volume 28, Article Number: 495101, 2016 [doi]

Lambropoulos, K., Kaklamanis, K., Georgiadis, G., Theodorakou, M., Chatzieleftheriou, M., Morphis, A., Tassi, M. and Simserides, C., THz oscillations in DNA monomers, dimers and trimers Volume 2015-January, Pages: 879-883, 2015 [doi]

Sofianou, M.-V., Tassi, M., Psycharis, V., Boukos, N., Thanos, S., Vaimakis, T., Yu, J. and Trapalis, C., Solvothermal synthesis and photocatalytic performance of Mn4+-doped anatase nanoplates with exposed 001 facets Applied Catalysis B: Environmental, Volume 162, Pages: 27-33, 2015 [doi]

Theophilou, I., Tassi, M. and Thanos, S., Charge transfer excitations from excited state Hartree-Fock subsequent minimization scheme Journal of Chemical Physics, Volume 140, Article Number: 164102, 2014 [doi]

Sofianou, M.-V., Tassi, M., Boukos, N., Thanos, S., Vaimakis, T., Yu, J. and Trapalis, C., Solvothermal synthesis and photocatalytic performance of Mg 2+-doped anatase nanocrystals with exposed 0 0 1 facets Catalysis Today, Volume 230, Pages: 125-130, 2014 [doi]

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