Laboratories

Modelling of physical processes on computers links theoretical knowledge with experimental observations.

Students are welcome - projects offer numerous partial goals suitable for students' theses

Researchers and students focus on two directions of computer simulations:

1) Molecular simulations

We use equilibrium and non-equilibrium molecular dynamics (MD) to study interactions of molecules. Students study interactions of molecules with surfaces and adsorption of molecules, structure, dynamics and interactions of nucleic acids oligonucleotides and their building blocks.
When needed, these simulations are combined with ab initio quantum calculations, which yield interaction parameters used subsequently in molecular simulations of systems of sizes typically from thousands to hundred of thousands of atoms.
The results of simulations are being compared with theory (theory of electric double-layer), experiments (X-ray diffraction, surface titration, adsorption experiments, second harmonics generation) and quantum calculations (ab initio calculations, quantum dynamics).

Our papers investigating electrokinetic phenomena, determination of  zeta potential and surface potential

“Molecular simulations of processes at solid-liquid interfaces”,  project LTAUSA17163, INTER-EXCELLENCE (INTER-ACTION), collaboration with Oak Ridge National Laboratory (USA), 2017-2021
Research team:
doc. RNDr. Milan Předota, Ph.D.
doc. Mgr. Martin Kabeláč, Ph.D.
Ing. Ondřej Kroutil, Ph.D.
MSc. Babak Minofar, Ph.D.
Mgr. Zdeněk Chval, Ph.D.
MSc. Denys Biriukov - Ph.D. researcher, former doctoral student (biophysics)
Mgr. Lydie Plačková - Ph.D. student (biophysics), researcher
Bc. Patrik Musil - master student
Foreign partner:
Andrew G. Stack, Oak Ridge National Laboratory and members of his team: Hsiu-Wen Wang, Nikhil Rampal

Recent project:
“Molecular description of phenomena in electrical double layer - prediction and interpretation of experimental data by computer simulations”, standard project, Czech Science Foundation, 17-10734S, 2017-2019
Research team:
doc. RNDr. Milan Předota, Ph.D.
Ing. Ondřej Kroutil, Ph.D.
MSc. Denys Biriukov - Ph.D. student (biophysics), researcher
Mgr. Pavel Fibich, Ph.D. - IT support.

2) Modeling of the solar atmosphere

Our numerical simulations are based on the solutions of magnetohydrodynamic (MHD) equations. In this case we simulate the plasma processes from macroscopic point of view, i.e. plasma is described as the conductive fluid. Our main scientific interest is focused on the problems related to the coronal heating, especially the plasma waves and oscillations which could significantly contribute to the heating of higher parts of solar atmosphere.

For computationally extensive physical and biophysical simulations we use two local computer clusters and national computational Metacentrum

Cluster Hermes: 

11  machines in a rack, each 2x Quad Core Xeon E5345 @ 2.33 GHz, 16 GB RAM, 5 x 500 GB HDD, Debian GNU/Linux
This cluster is a member of Metacentrum, local users have privileged access..

Cluster of Department of Physics and Biophysics:

7 PC , each Quad Core 2 Quad @ 3.0 GHz, 2 GB RAM,  500 GB HDD, SuSE 11 Linux + 2TB shared disk
1 PC Intel(R) Core(TM) i5-2310 CPU @ 2.90GHz, 500 GB HDD, SuSE 11 Linux,  GPU GIGABYTE GTX 560 Ti Ultra Durable 1GB

Both clusters offer parallel environment for compilation and execution of multi-processor (multi-thread) tasks and are used in teaching of classes UFY/PPI Parallel programing, UFY/PFM Computational physics - Computer modeling, UFY/SIM1  Computer simulations in many body physics and  UFY/SIM2 Advanced simulations in many body physics.

The main aim of the Laboratory of Acoustic and Electronics is the sound signal processing. We cooperate with colleagues of IT Institute (UAI) and Faculty of Education (PF).

We also focus on sound and building design. The sound analyzers  Bruel &Kjaer 2250 are used as well as other supplementary tools.