University of Debrecen

Department of Theoretical Physics


H-4010 Debrecen, P.O.Box 5, Hungary

E-mail: ferenc.kun@science.unideb.hu

Phone: +36 52 417266 ext. 1388

Web: http://dtp.atomki.hu/~feri

Fax: +36 52 346758

Profile on Google Scholar

Ferenc Kun is professor at the Department of Theoretical Physics (UD). He received his PhD in 1997 and became doctor of the Hungarian Academy of Sciences (DSc) in 2010. As a PhD Student he studied at the Ecole Superieur de la Physique et Chimie Industrielle in Paris, and later on he was postdoc at the Institute of Computational Physics of the University of Stuttgart. His major research field is the physics of complex systems and the statistical physics of fracture and fragmentation phenomena.

Physics of Complex Systems and Advanced Materials


Fragmentation phenomena

Fragmentation, i.e. the breaking of particulate materials into a large number of smaller pieces is abundant in nature and underlies several industrial processes. Fragmentation phenomena can be observed on a broad range of length scales from the collisional evolution of asteroids and meteor impacts on the astrophysical scale, through geological phenomena and industrial applications on the intermediate scale down to the break-up of large molecules and heavy nuclei on the atomic scale..


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Statistical physics of fracture and related problems

Fragmentation, i.e. the breaking of particulate materials into a large number of smaller pieces is abundant in nature and underlies several industrial processes. Fragmentation phenomena can be observed on a broad range of length scales from the collisional evolution of asteroids and meteor impacts on the astrophysical scale, through geological phenomena and industrial applications on the intermediate scale down to the break-up of large molecules and heavy nuclei on the atomic scale..


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Rheological Fluids

Electro- and magnetorheological fluids, also called smart fluids, are colloidal materials composed of micrometer sized particles suspended in an electromagnetically passive viscous liquid. The most striking feature of ER and MR fluids is that their reological properties can be controlled by an external electric or magnetic field which has major potential in automotive, and aircraft/aerospace applications. They can be used in devices such as dampers, shock absorbers, brakes, clutches, valves, position and speed controllers. Our work is focused on magnetorheological systems where the particles have a permanent magnetic dipole moment. In such colloids in the absence of an external magnetic field the particles aggregate due to the dipolar interaction and biuld up complex structures which gives rise the change of the overall rheological properties of the colloid.


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Socio-economic systems

Recently, the application of statistical physics and of the theory of critical phenomena provided novel insight into the dynamics of socio-economic systems. Various types of models have been developed which capture important aspects of the emergence of communities, opinion spreading or the evolution of financial data. The dynamics of innovation and the spreading of new technological achievements show also interesting analogies to complex physical systems.



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