I am originally from Greece and my name is pronounced "Fee-vos", written also as "Fivos". 

My group develops and exploits advanced X-ray scattering techniques to study the molecular structure and dynamics of aqueous solutions and supercooled liquids, as wells of proteins in crowded and cryogenic environments. Experiments involve Time-resolved X-Ray Diffraction and X-ray Photon Correlation Spectroscopy (XPCS) measurements at large X-ray facilities worldwide, such as X-ray storage rings and X-ray Free-Electron Lasers (XFELs).

See official group website.

Brief Biography

2025 Associate Professor, Stockholm University
2022 Docent, Department of Physics, Stockholm University
2019 Assistant Professor, Stockholm University
2016 Researcher, Stockholm University
2014 Postdoc at SLAC, Stanford University
2014 PhD in Physical Chemistry, University of Zurich
2008 Diploma in Physics, University of Crete

See here for CV

Selected Publications

Coherent X-rays reveal anomalous molecular diffusion and cage effects in crowded protein solutions. Girelli et al. 
Nature Commun. 18, 10814 (2025)

Observation of a dynamic transition in bulk supercooled water. Tyburski et al. 
Nature Physics (2025) 

Supercritical density fluctuations and structural heterogeneity in supercooled water-glycerol microdroplets. Berkowicz*, Andronis* et al. 
Nature Commun., 15, 10610 (2024)

Melting Domain Size and Recrystallization Dynamics of Ice Revealed by Time-Resolved X-ray Scattering. Yang et al. 
Nature Commun., 14, 3313 (2023)

Liquid-liquid phase separation in supercooled water from ultrafast heating of low-density amorphous ice. Amann-Winkel et al.
Nature Commun., 14, 442 (2023)

Resolving molecular diffusion and aggregation of antibody proteins with megahertz X-ray free-electron laser pulses. Reiser et al.  
Nature Commun. 13, 5528 (2022)

• See here for a full list of publications