Supervisors from Institute of Molecular Physics



Konstantin V. Tretiakov graduated summa cum laude in industrial electronics from the Pavel Sukhoi State Technical University of Gomel in 1994. He received his PhD in physics from the Institute of Molecular Physics, Polish Academy of Sciences (Poznan, Poland) in 2000. He is a recipient of the 2000 Institute of Molecular Physics Award for his PhD dissertation. In 2002-2004, he was a postdoctoral fellow (with Prof. S. Scandolo) at the Condensed Matter and Statistical Physics Section at the Abdus Salam International Center for Theoretical Physics (Trieste, Italy). In 2007-2009, he worked with Prof. B. Grzybowski in the Department of Chemical and Biological Engineering at Northwestern University (Evanston IL, United States). In 2011, he earned his DSc (habilitation) in physics at the Institute of Molecular Physics, Polish Academy of Sciences. Since 2014 he has been an associate professor at the Institute’s Department of Computational Physics of Complex Systems and a member of its scientific council. He is a recipient of the 2019 Prize of the Polish Minister of Science and Higher Education for a significant achievement in scientific activity.


Research interests:

Statistical physics and computer simulation of many-body systems, with research focusing on non-equilibrium self-assembling systems, transport properties of soft matter, elastic properties of solids in particular materials exhibiting negative Poisson's ratio.


Major publications:

Huda S., Weigelin B., Wolf K., Tretiakov K. V., Polev K., Wilk G., Iwasa M., Emami F. S., Narojczyk J. W., Banaszak M., Sohl S., Pilans D., Vahid A., Makurath M., Friedl P., Borisy G. G., Kandere-Grzybowska K., Grzybowski B. A. (2018). ”Levy-like movement patterns of metastatic cancer cells revealed in microfabricated systems and implicated in vivo”, Nature Communications 9, 4539.

Tretiakov K. V., Piglowski P. M., Hyzorek K., Wojciechowski K. W. (2016). ”Enhanced auxeticity in Yukawa systems due to introduction of nanochannels in [001]-direction”, Smart Materials and Structures 25, 054007.

Tretiakov K. V., Szleifer I., Grzybowski B. A. (2013). ”The Rate of Energy Dissipation Determines Probabilities of Non-equilibrium Assemblies”, Angewandte Chemie International Edition 52, 10304-10308.

Nakanishi H., Bishop K. J. M., Kowalczyk B., Nitzan A., Weiss E. A., Tretiakov K. V., Apodaca M. M., Klajn R., Stoddart J. F., Grzybowski B. A. (2009). ”Photoconductance and inverse photoconductance in films of functionalized metal nanoparticles”, Nature 460, 371-375.

Tretiakov K. V., Scandolo S. (2004). “Thermal conductivity of solid argon from molecular dynamics simulations”, Journal of Chemical Physics 120, 3765.


Krzysztof Wojciechowski is a professor at the Institute of Molecular Physics, Polish Academy of Sciences (IMP PAS), where he leads the Division of Soft Matter Physics and Functional Materials as well as the Group of Computational Physics of Complex Systems. He earned an MSc degree in theoretical physics and an MSc degree in mathematics from the Adam Mickiewicz University in Poznan, followed by his PhD and DSc (habilitation) degrees in physics from IMP PAS. His research interests have included statistical mechanics of hard-body systems, algorithms for simulations of many-body systems, auxetics and the influence of various mechanisms on the Poisson’s ratio of condensed matter systems, materials with unstable inclusions, generators of (pseudo)random numbers, applications of fractional derivative in physics, and exotic liquid crystalline phases. He has published more than 200 research papers in English, Polish and Russian. His HI=30 (Web of Science). He has guest co-edited more than two dozen thematic issues in international journals, on auxetics and related materials, the mechanics of continuous media, statistical mechanics of condensed matter, computer simulation methods, nonlinear and disordered systems. He referees for many international journals and is a member of the Editorial Board of the CMST and TASK Quarterly.


Research interests:

Auxetics and other mechanical metamaterials, computer simulations, hard body models, applications of fractional derivative in physics, quasicrystals and exotic liquid crystals.


Major publications:

Bilski M., Wojciechowski K. W. (2016). “Tailoring Poisson's ratio by introducing auxetic layers”, Physica Status Solidi B-Basic Solid State Physics, 253: 7, 1318-132.

Pozniak A.A., Wojciechowski K.W., Grima J.N., et al. (2016). “Planar auxeticity from elliptic inclusions”, Composites Part B-Engineering,  9, 379-388.

Grima J.N., Winczewski Sz., Mizzi L., et al. (2015). “Tailoring Graphene to Achieve Negative Poisson's Ratio Properties”, Advanced Materials, 27: 8, 1455.

Pozniak A. A., Smardzewski J., Wojciechowski K. W. (2013). “Computer simulations of auxetic foams in two dimensions”, Smart Materials And Structures. 22: 8, Article Number: 084009.

Wojciechowski K. W. (1989). ”Two-dimensional isotropic system with a negative Poisson ratio”,  Physics Letters, 137: 1-2, 60-64.


Piotr Kuświk has led, since 2020, the Thin Film Department at the Institute of Molecular Physics, Polish Academy of Sciences (IMP PAS). His main scientific interest lies in magnetic thin films with ferromagnetic or ferrimagnetic layers that exhibit perpendicular magnetic anisotropy. In particular, he investigates different methods to modify this anisotropy, e.g.: ion bombardment, plasma oxidation. He held a postdoc fellowship at the Max-Planck-Institut für Mikrostrukturphysik. He has participated in many scientific international internships, including in Germany, the United States, and Japan. In 2007-2010 he held a scholarship from the President of the Polish Academy of Sciences (PAS), and in the following years he received other prestigious awards: the scientific award of the City of Poznań, the Stefan Pieńkowski award granted by PAS Division III, the START Scholarship of the Foundation for Polish Science, and a scholarship from the French government. He is a member of Polish Young Academy and the PAS Committee on Physics. He is the co-author of 49 publications and one book chapter. He has published findings in renowned scientific journals such as Physical Review Letters, Physical Review B, and Nanotechnology. He has repeatedly participated in domestic and foreign research projects. Currently, he manages three research programs under the NAWA-DAAD, NCN SONATA BIS and NCN OPUS grant schemes.


Research interests:

Magnetic thin films and nanostructures, magnetic patterning.


Selected publications:

Urbaniak M., Kuświk P., et. al. (2010).  Phys. Rev. Lett. 105, 067202.

Kuświk P., et al. (2011). Nanotechnology 22, 095302.

Kuświk P., et al. (2012). Nanotechnology 23, 475303.

Kuświk P., et al. (2015). Phys. Rev. B 91, 134413.

Kuświk P., et al. (2018). Nanomaterials 8, 813.

Frąckowiak Ł., Kuświk P., et al. (2020). Phys. Rev. Lett. 124 (4), 047203.


Wojciech Medycki is a professor and group leader at the Dielectric Department of the Institute of Molecular Physics, Polish Academy of Sciences (IMP PAS). He earned his PhD from IMP PAS in 1984, then became an adjunct at the Environmental Radiospectroscopic Research Laboratory. He became an associate professor in 2010 and an institute professor in 2019.


Research interests:

Solid State NMR, ferroics, organic-non-organic hybrids, relaxation processes, phase transitions.


Major publications:

Rok M., Zarychta B., Moskwa M., Dziuk B., Medycki W., Bator G. (2020). “Structural phase transitions coupled with prominent dielectric anomalies and dielectric relaxation in [(CH3)3NH]2[KCo(CN)6] and mixed [(CH3)3NH]2[KFeXCo1-X(CN)6] double perovskite hybrids”, Dalton Transactions, 49, 1830-1838.

Mencel K., Gągor A., Jakubas R., Ciżman A., Medycki W., Zaręba J. K., Piecha-Bisiorek A. (2020). “Ferroelectricity in a lead free organic–inorganic 0D hybrid: formamidinium bromoantimonate(III)”,

Journal of Materials Chemistry C, 8 , 5025-5028.

Rok M., Bator G., Zarychta B., Dziuk B., Repeć J., Medycki W., Zamponi M., Usevičius G., Šimenas M., Banys J. (2019). “Isostructural phase transition, quasielastic neutron scattering and magnetic resonance studies of a bistable dielectric ion-pair crystal [(CH3)2NH2]2KCr(CN)6”, Dalton Transactions, 48, 4190-4202.

Ksiądzyna M., Gągor A., Piecha-Bisiorek A., Ciżman A., Medycki W., Jakubas R. (2019). “Exploring a hybrid ferroelectric with a 1-D perovskite-like structure: bis (pyrrolidinium) pentachloroantimonate (iii)”, Journal of Materials Chemistry C, 7, 10360-10370.

Mencel K., Piecha-Bisiorek A., Jakubas R., Kinzhybalo V., Medycki W. (2019). “Hybrid organic-inorganic bismuth(III)-based material [4-NH2C5H4NH]7[BiCl6]2Cl. Crystal structure, dielectric properties and molecular motions of 4-aminopyridinium cations”, Journal of Molecular Structure, 1179, 297-303;

Rok M., Bator G., Zarychta B., Dziuk B., Skałecki D. K., Medycki W., Zamponi M. (2019). “Screening Ferroelastic Transitions in Switchable Cyano-Bridged Perovskites: [CH3C(NH2)2]2[KM(CN)6], M = Cr3+, Fe3+, Co3+. Crystal Structure Characterization, Dielectric Properties, 1H NMR, and Quasielastic Neutron Scattering Studies”, Crystal Growth & Design, 19, 4526-4537.

Mencel K., Starynowicz P., Siczek M., Piecha-Bisiorek A., Jakubas R., Medycki W. (2019). “Symmetry breaking structural phase transitions, dielectric properties and molecular motions of formamidinium cations in 1D and 2D hybrid compounds: (NH2CHNH2)3[Bi2Cl9] and (NH2CHNH2)3[Bi2Br9]”, Dalton Transactions, 48, 14829-14838.

Rok M., Bator G., Sawka-Dobrowolska W., Durlak P., Moskwa M., Medycki W., Sobczyk L., Zamponi M. (2018). “Crystal structural analysis of methyl-substituted pyrazines with anilic acids: A combined diffraction, inelastic neutron scattering, 1H-NMR study and theoretical approach”,

CrystEngComm, 20, 2016-2028.

Płowaś-Korus I., Masewicz Ł., Szwengiel A., Rachocki A., Baranowska H. M., Medycki W. (2018).

“A novel method of recognizing liquefied honey”, Food Chemistry, 245, 885-889.

Wojciechowska M., Gągor A., Piecha-Bisiorek A., Jakubas R., Ciżman A., Zarȩba J. K., Nyk M., P. Zieliński, Medycki W., Bil A. (2018). “Ferroelectricity and Ferroelasticity in Organic Inorganic Hybrid (Pyrrolidinium)3[Sb2Cl9]”, Chemistry of Materials, 30, 4597-4608.

Moskwa M., Bator G., Piecha-Bisiorek A., Jakubas R., Medycki W., Ciżman A., Baran J. (2018). “X-ray structure and investigation of molecular motions by dielectric,vibrational and 1H NMR methods for two organic-inorganic hybrid piperazinium compounds: (C4H12N2)2[Sb2Cl10]·2H2O and (C4H12N2)2[Sb2Br10]·2H2O”, Materials Research Bulletin, 104, 202-211.

Zbigniew Śniadecki is an assistant professor at the Institute of Molecular Physics, Polish Academy of Sciences in Poznań (since 2010). In 2013 and 2014 he spent one year as a postdoctoral fellow at the Institute of Nanotechnology of Karlsruhe Institute of Technology (Germany) in the group of Prof. Horst Hahn, working mainly on the properties and formation of metallic nano-glasses. He has been the leader or a participant of many research projects concerning magnetocaloric and hard magnetic materials. Moreover, his research interests include magnetism and other physical phenomena occurring in structurally metastable materials, including amorphous and nanocrystalline alloys. Besides being an experimentalist, he is keen on modeling the thermodynamic properties, stability and glass forming ability of novel alloys. He earned his DSc (habilitation) in 2019 for the scientific achievement entitled “Thermodynamic aspects of structural disorder and its influence on the magnetism of chosen Co-based alloys”. He has many ongoing collaborations with colleagues from domestic academic institutions as well as from abroad, including Germany, France, Slovakia and India.


Research interests:

Magnetism, metallic glasses, non-equilibrium thermodynamics, nanocrystalline alloys, crystallization.


Major publications:

Musiał A., Kovač J., Śniadecki Z. (2020). “Magnetic properties of Hf2(FexCo1-x)11B (x = 0.2, 0.4) alloys synthesized from structurally metastable phases”, J. Magn. Magn. Mater. 514, 167008.

Śniadecki Z., Pierunek N., Idzikowski B., Wasilewski B., Werwiński M., Rößler U.K., Ivanisenko Yu., (2018). “Influence of structural disorder on the magnetic properties and electronic structure of YCo2“, Phys. Rev. B 98, 094418.

Pierunek N., Śniadecki Z., Werwiński M., Wasilewski B., Franco V., Idzikowski B. (2017). “Influence of structural disorder on normal and inverse magnetocaloric effect in Y1-xGdxCo2 compounds”, J. Alloys Compd. 702, 258-265.

Nandam S.H., Ivanisenko Yu., Schwaiger R., Śniadecki Z., Mu X., Wang D. , Chellali R., Boll T., Kilmametov A., Bergfeldt T., Gleiter H., Hahn H. (2017). “Cu-Zr nanoglasses: atomic structure, thermal stability and indentation properties”, Acta Mater. 136, 181-189.

Śniadecki Z., Wang D., Ivanisenko Yu., Chakravadhanula V.S.K., Kuebel C. , Hahn H., Gleiter H. (2016). “Nanoscale morphology of Ni50Ti45Cu5 nanoglass, Mater. Charact. 113, 26-33.