Crystallographer and chemist with expertise and experience in crystallography, quantum crystallography, solid state chemistry, with special emphasis on crystallochemistry. Expert in the field of experimental studies of charge densities in crystals of organic, inorganic compounds and minerals, polymorphism and interactions in pharmaceutical substances, supramolecular compounds and catalyst, as well as methodological aspects of X-ray scattering and neutron diffraction. Author and co-author of more than 350 publications, 70 invited lecturers and 50 conference reports. Laureate of several distinctions of Rector of Warsaw University for scientific and educational achievements, Prime Minister Award for outstanding habilitation and Award of 3rd Department of Polish Academy of Sciences in Chemistry. Visiting professor in Prof. C. Lecomte’s group at the H. Poincare University at Nancy France, sabbatical stay in Prof. W. Jones’ group at the Chemistry Department, University of Cambridge (UK - 2014), 2007 - invited participant of the 21st Solvay Conference in Chemistry (on molecular machines), since 2015 elected Fellow of the ChemPubSoc Europe society, Prof. W. Świętosławski Research Prize awarded by the Warsaw Branch of the Pol. Chem. Soc. and Prof. W. Świętosławski Research Prize awarded by the Department of Chemistry of UW (both in 2018) + in past years several others national and the University awards for teaching commitment and academic excellence). Head of the SIG 2 Quantum Crystallography of the European Crystallographic Association and representative of Quantum Crystallography IUCR Commission to the International Programme Committee of the IUCR Congress in Prague (2020).