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Masaryk University

Kotlarska 2
61137 Brno
Czech Republic

Contact email:

Website: www.sci.muni.cz

Brief presentation of the institution

The Faculty of Natural Science at Masaryk University in Brno provides higher education in the scientific fields of Mathematics, Physics, Chemistry, Biology, and Earth Sciences. There are 153 accredited fields of study in Bachelor’s, Master’s, and Doctoral degree programs, designed to educate specialized researchers in the sciences, and future secondary school teachers.

Intensive practical activity in the sciences is one of the faculty’s main priorities. This is the foundation for the high standard of education that has made it the most productive faculty at the university over the years.

Academic activity is supported by technical facilities at the individual departments, which are of top international quality in many cases. Cooperation between Czech and foreign research centres is strongly emphasized. The main goals of basic research are to acquire knowledge, and learn procedures and techniques that can be used in this country and elsewhere in applied research and development.

At present, there are nearly 4500 students studying at the faculty, along with about 320 academic employees who also take part in research work.

In the Department of Physical Electronics (DPE) problems of plasmachemical treatments of materials and preparation of thin films has been studied already since 60’s. During the last years, the centre of the research and investigation activity has been non-isothermic plasma excited under atmospheric pressure and high/frequency as well as microwave plasma. Elementary processes have been studied that take place in these kinds of plasma, as well as diagnostic methods, methods of plasma processing of solids, new methods of applying thin layers above all in polymeric, superhard, semisorption and semipermeable ones. Low-temperature plasma powder metallurgy has been developed as well as new methods of plasmachemical restoration and preservation of archaeological artefacts and museum objects. Volume plasmachemical reactions have been studied and new methods of decomposition of harmful substances in the pulse high frequency and microwave plasma and others. The research has been supported by several Czech as well as European grants, which were successfully finished or are in the final stage.

The DPE offers a long tradition and prominent level of technical competence in the field of non-thermal (cold) plasma generation studies including DBD. Nowadays the main scope of DBD research activities at the department is focused on the surface treatment and coating of diverse types of polymers, textile, animal fibers and glass, using the diffuse DBD, filamentary DBD, coplanar DBD, surface DBD, and plasma jets.

The non-equilibrium plasma generated at atmospheric pressure in liquids and their interaction with solids has been intensively studied within last two decades for high potential of applications. 

Main Plasma with liquids related topics

Plasma diagnostics (optical emission spectroscopy, electric measurements, ICCD imaging)

Development of high voltage sources (DC, high frequency) and discharge reactors based mainly on the so-called diffuse coplanar surface discharge

Surface treatment of polymers by underwater diaphragm discharge generated in water with small admixtures of salts

Applications of underwater discharges in water treatment, plasma sterilisations and surface treatment of solid materials and nanoparticles

Main Plasma with liquids related research techniques and equipment

High voltage sources for generation of electrical discharges in liquids
- DC and high frequency high voltage sources

Plasma reactors for generation of electrical discharges in liquids
- diaphragm discharge in water and salt solutions
- plasma jet for surface treatment in solutions

Plasma diagnostics
- Spectrometers from Jobin Yvon Horiba company with CCD and iCCD detectors
-  LeCroy WaveRunner 6100A oscilloscope (1 GHz, 10 GS/s) equipped with HV probes TEKTRONIX P6015A (1000×) and Pearson current monitor Model 2877
- (TA)LIF experimental set-up based on pulsed tuneable laser system using Nd:YAG laser Quanta-Ray PRO-270-30 with maximal energy 1.3 J per pulse, tuneable dye laser PrecisionScan PRSC-D-24-EG and nonlinear modules for converting the laser radiation into a wide spectral range from 200 nm to near IR. For measurement of the fluorescence radiation the fast intensified CCD camera PI-MAX 1024RB-25-FG-43 and Princeton Instruments PIMAX3: 1024i-Unigen2 Intensifier Detector (Camera) is used.
- TCSPC equipment for simultaneous measurement of two optical transitions with ultrahigh time resolution about 200 ps.
 Chemical analysis of liquid and gaseous products
- PTR-TOF and PTR-MS
- ICP, ICP-OES and ICP-MS
- FTIR and fluorescence spectroscopy

Material analysis of treated surfaces
- SEM and XPS
- Some specific diagnostic methods (Fisherscope depth sensing microhardness tester, Raman spectroscopy, AFM, Shimatzu tester)

Core facilities available for the projects at DPE

Parallel computer cluster 6core AMD Phenom II X6 1090T Processor @ 3.2GHz; 8core Interl® Xeon® CPU E6510 @ 2.33Ghz; 6core AMD Phenon II X6 1055T Processor 3.2GHz, Comsol Multiphysics 4.3 with various modules.

Brief information on available facilities related to Plasma with liquids

Various discharge reactors for plasma generation by various voltage regimes in liquid solutions:
- diaphragm discharge systems in water and salt solutions
- high frequency DBD discharge system in water vapours
- atmospheric plasma jet for underwater surface treatment
- small-scale reactors for diagnostics of diaphragm discharges in water solutions
- large-scale devices based on diffuse coplanar surface barrier discharge for surface treatment of polymer foils

Willingness to accept/host visiting researchers

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