Contacts
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| Príprava a charakterizácia pokročilých anorganicko-organických polymérnych hybridov pre 3D tlač | |
| Syntesis and characterization of novel organic-inorganic polymeric hybrids for 3D printing | |
| Program: | Inter-academic agreement |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Annotation: | Three-dimensional printing is currently largely bound to the use of polymer materials supplied bythe printer manufacturer. This, however, greatly limits the wider application of 3D printing of objects with specific physicochemical and mechanical properties. The primary reason of this limitation is the requirement for biocompatibility, biodegradability, enhancement of anti-corrosion properties, or specific requirements for the mechanical and electrical properties of the resulting products. Consequently, the objective of this project is the synthesis and characterization of novel advancedpolymer composites with inorganic fillers applicable in 3D printing. The aim will be to examine the influence of the size and shape distribution of inorganic fillers on thestructure and physicochemical properties of the newly formulated composites. Increased attentionwill be paid to modifying the macromolecular structure and microstructure at the interface between the organic and inorganic phases and unveiling the induced changes in the macroscopic properties of the infiltrated hybrid materials. |
| Duration: | 1.1.2018 – 31.12.2021 |
| WȔRTH – Príprava magneticky mäkkých kompozitov pre priemysel | |
| Preparation of soft magnetic composites for infustrial application | |
| Program: | Bilateral – other |
| Project leader: | RNDr. Strečková Magdaléna, PhD. |
| Annotation: | The project focuses on the preparation of soft magnetic composites based on ferromagnetic material and modified polymers. The soft magnetic composite material will be potentialy used for the preparation of miniaturized high temperature templates. |
| Duration: | 1.9.2017 – 31.8.2020 |
| Kompaktizácia magneticky mäkkých práškových materiálov s obmedzenou schopnosťou plastickej deformácie | |
| Compaction of soft magnetic powder materials with limited plastic deformation ability | |
| Program: | Inter-academic agreement |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Annotation: | Goal of the project is to investigate the progressive compaction methods to achieve high density and low defectiveness of the structure of soft magnetic materials based on powder FeSi and High entropy alloys. Research is focused on the clarification of densification mechanism in powder soft magnetic materials. Mechanical and magnetic properties of compacted materials will be correlated with parameters of compaction technology. This knowledge will contribute to application of progressive magnetic alloy in technical practice mainly in the field of green energy and transportation industry. |
| Duration: | 1.1.2018 – 31.12.2019 |
| Funkčné kompozity na báze elastomérnej matrice a anorganických plnív | |
| Functional composites based on elastomer matrix and inorganic filler | |
| Program: | Inter-academic agreement |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Annotation: | Advanced functional materials combining required mechanical and electro-magnetic properties currently represent a promising approach in development of new types of sensors. The primary aim of the proposed joint project is formulation of novel functional composites based on elastomer matrix modified by nano-particle fillers. To obtain materials with a broad range of physicochemical properties the polymer matrix, for instance polyurethane based on polybutadiene blocks, will be modified by different types and amounts of metallic nano-particles. Indispensable part of the proposed project is detailed structural and physicochemical characterization of the prepared composite systems. For such task specific correlations between mechanical and electrical properties and the chemical composition of the prepared systems will be primarily studied. Molecular structure will be probed by FTIR and ssNMR techniques while surface morphology will be determined using advanced microscopy. Successful solution of the proposed project requires extensive knowledge transfer between both working groups. |
| Duration: | 1.1.2016 – 31.12.2017 |
| Príprava a charakterizácia magneticky mäkkých zliatin s vysokou entropiou | |
| Preparation and characterization of soft magnetic high entropy alloys | |
| Program: | Inter-academic agreement |
| Project leader: | RNDr. Strečková Magdaléna, PhD. |
| Annotation: | The project will be focused on preparation of soft magnetic alloys materials high energy milling of Fe and Ni with addition of glassy phase stabilizer and with addition of elements supporting nanocrystallization process. Main goal of the project is preparation and haracterization of nanocrystalline or partially amorphous alloys. Task of Czech research team will be echanochemicalpreparation of powder nano-crystalline material. XRD and SEM-EBSD methods will be used forcharacterization and optimization of mechanical milling process. Technology parameters andconditions of preparation of studied nano-crystalline alloys will be defined. Task of Slovak research team is analyses of powder morphology and particle size distribution of prepared powder alloys. Analysis of compressibility, shaping and compaction of selected powders to sample body for electric, magnetic and mechanical tests. Correlation analyse of measured characteristics will beused to obtain the information, which will be important for potential application of studied alloys in technical practice. |
| Duration: | 1.1.2015 – 31.12.2017 |
National
| Povrchové inžinierstvo práškových feromagnetických častíc a štruktúra magneticky mäkkých kompozitov | |
| Surface engineering of powder ferromagnetic particles and structure of soft magnetic composites | |
| Program: | VEGA |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Annotation: | The project deals with SMC based on powdered ferromagnetics and electro-insulating ceramics in the form of a continuous network. The research of such materials applied in the field of energy conversion is motivated by increasing performance and efficiency, which is achieved by increasing the working frequency of magnetization. The project aims to investigate the structure of ferromagnetic and dielectric particle interfaces, their influence on the formation of microstructure and the functional properties of compacted SMC materials with a focus on the frequency stability of electromagnetic properties. The high variability of the geometrical characteristics of ferromagnetic microparticles and modifications in the distribution of ceramic nanoparticles provide a large scope for increasing the frequency stability of the functional properties of the composite. The analysis of interphases, structural discontinuities and compaction mechanisms will contribute to clarifying the evolution of electromagnetic properties. |
| Duration: | 1.1.2024 – 31.12.2026 |
| Bezolovnaté feroelektrické materiály pre efektívne uskladňovanie elektrickej energie | |
| Lead-free ferroelectric materials for energy storage applications | |
| Program: | VEGA |
| Project leader: | RNDr. Kovaľ Vladimír, DrSc. |
| Annotation: | The proposed project is devoted to the research and development of novel relaxor-type ferroelectric ceramics.Relaxor ferroelectrics (RFEs) are receiving considerable attention from materials scientists due to their uniqueproperties for energy storage applications. However, dielectric capacitors made of RFEs, although presentingfaster charging/discharging rates and better stability compared with supercapacitors or batteries, are limited inapplications due to their relatively low energy density.The main goal of the project is to design and prepare a lead-free RFE ceramic material with high energy storagedensity and efficiency. A series of structural modifications using cationic substitution on a RFE material will becarried out to enhance the energy storage capabilities of the ceramics. The effect of the chemical substitution onferroelectric phase transitions and formation of polar nanoregions will be investigated in relation to thecompositional disorder and stability of antiferroelectric state. |
| Duration: | 1.1.2023 – 31.12.2025 |
| Katalyzátory pre elektrolýzu vody v membránových elektrolyzéroch. | |
| Catalysts for water splitting in membrane electrolyzers. | |
| Program: | VEGA |
| Project leader: | RNDr. Strečková Magdaléna, PhD. |
| Annotation: | Hydrogen is a flexible and clean energy carrier because it offers not only the prospect of large green electricity storage capacities, but also a wide range of industry decarbonisation. The development of hydrogen technology activities has been supported by the European Commission as "A hydrogen strategy for a climate-neutral Europe". Slovakia has developed a national hydrogen strategy and at present, the Hydrogen technology center is being established in Košice with the main concept "Power-to-Gas" using renewable energy sources. Water electrolysis appears to be the most promising technology for hydrogen production. Bimetallic phosphide nanoparticles represent future substitutes for noble-free metals and critical materials in electrolysers and fuel cells. The main challenge of this project is to reduce hydrogen production and at the same time maintain the high efficiency of water electrolysis in membrane electrolysers. The main goal of the project will be dedicated to the improvement of electrode material. |
| Duration: | 1.1.2023 – 31.12.2025 |
| HERO – Elektrokatalyzátory pre efektívnu produkciu vodíka pre budúce elektrolyzéry a palivové články | |
| Hydrogen evolution electrocatalysts for future electrolyser and fuel cells | |
| Program: | SRDA |
| Project leader: | RNDr. Strečková Magdaléna, PhD. |
| Annotation: | The development of activities in the field of hydrogen technologies was also supported by the EuropeanCommission in the strategic document "Hydrogen Strategy for a Climate Neutral Europe". Today, Slovakia hassuggested own national hydrogen strategy. Already in 2015, the National Hydrogen Association has founded tosupport research, implementation and use of hydrogen technologies. The Hydrogen Technology Center is beingestablished in Košice with the main "Power-to-Gas" concept using renewable power energy sources with nonegative impact on human life and without dependence on fossil fuels. A significant source of hydrogen is waterand the electrolysis of water is the most promising technology for hydrogen production. However, before it can berecognized as an economically significant resource for large scale application with an exceptional energy potential,the simple, efficient, and secure methods of hydrogen retrieval have to be developed. For the time being, the mostefficient electrocatalysts in terms of overpotential for hydrogen evolution reaction (HER) are noble metals.Unfortunately the high cost and scarcity of noble metals motivate the scientists to find the rival low-costalternatives. Intrinsic structures of TMP meet the criteria of outstanding electrocatalysts that could further improve their HER performance in membrane electrode assembly. Excellent dispersity of electrocatalysts allows full use ofactive sites on catalysts to participate in electrode reaction to improve the electrocatalytic efficiency. Therefore, themain challenge in this project is to reduce the production cost of HER and at the same time to maintain the highefficiency of polymer electrode water electrolysis. Substantial aim of the project will be devoted to improve the PEM water electrolysis components mainly electrode materials based on modified carbon fibers electrocatalysts result in the technology which should be more approached to commercial markets. |
| Duration: | 1.7.2021 – 30.6.2025 |
| DEBIORE – Degradovateľné kovové biomateriály s riadeným uvoľňovaním liečiv | |
| Degradable metallic biomaterials with controlled drug release | |
| Program: | SRDA |
| Project leader: | RNDr. Kupková Miriam, CSc. |
| Duration: | 1.7.2021 – 31.12.2024 |
| Vplyv mikrovlnného žiarenia na štruktúru a vlastnosti práškových funkčných materiálov | |
| Influence of microwave radiation on the structure and properties of powder functional materials | |
| Program: | VEGA |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Annotation: | The subject of research is the interaction of MW radiation with functional powder materials with specific electrical and magnetic properties, especially soft magnetic composites (SMC). The aim of the project is to contribute to the explanation of the mechanisms of densification of the MW processed structure of powder composites based on the primary ferromagnetic component and the secondary dielectric component distributed in the volume of the composite as a network. The structural characteristics will be correlated with the electromagnetic and mechanical properties of MW sintered materials in order to contribute to the explanation of changes in the functional properties induced by the interaction of MW radiation with ferromagnets and dielectrics. It is assumed that fundamental knowledge about the relations of process parameters, structure and physical properties will contribute to the application possibilities of MW PM processing. The contribution can also be expected in the field of structural design of SMC. |
| Duration: | 1.1.2021 – 31.12.2023 |
| Inovatívne postupy vo výskume a vývoji nových feroických materiálov s využitím komplexnej impedančnej spektroskopie | |
| Innovative approaches to research and development of novel ferroic materials by using complex impedance spectroscopy | |
| Program: | VEGA |
| Project leader: | RNDr. Kovaľ Vladimír, DrSc. |
| Annotation: | Ferroelectric and multiferroic (e.g., magnetoelectric) materials have received extensive attention in the last few decades, primarily because of their numerous potential applications in microelectronics and spintronics. Ferroic ceramics, however, suffer usually from high losses, leakage currents and low polarization (ferroelectric and/or magnetic) due to grain boundary effects and interfacial polarization phenomena. These microstructural featuresimpede largely commercial viability of electro-active ceramics. The main goal of the proposed project is to employ the AC complex impedance technique for probing the electrical properties of functional ceramics and reveal the correlation between the microstructural features and conductivity phenomena in grain boundary and/or interfacial layer dominated materials. Understanding the structure-property relationship would allow designing novel (multi-) functional materials with improved dielectric and (multi-) ferroic properties. |
| Duration: | 1.1.2020 – 31.12.2022 |
| Vývoj elektródového materiálu na báze uhlíkových vlákien dopovaných fosfidmi kovov pre elektrokatalýzu vodíka. | |
| Development of electrode materials based carbon fibers doped with metal phosphides for electrocatalysis of hydrogen evolution reaction. | |
| Program: | VEGA |
| Project leader: | RNDr. Strečková Magdaléna, PhD. |
| Annotation: | Hydrogen produced from renewable energy sources is considered to be a fuel of the future that has the potentialto reduce the energy dependence of developed countries on oil imports and to improve the quality of human life.Hydrogen produced from electrolysis of water could be a sustainable source of energy. However the simple,efficient, and secure methods of hydrogen retrieval must be developed before it can be recognized as aneconomically significant resource with an exceptional energy potential. The project is devoted to the preparationof new catalysts for the effective hydrogen evolution from water. The porous carbon fibers modified with metallicnanoparticles and metallic phosphide nanoparticles will be prepared by needle-less elektrospinning technologyfrom the free surface of polymers, to catalyze the production of hydrogen at low overpotential.The outcomes ofthe project will be design of a compact electrode composed of modified carbon fibers that would effectivelycatalyse hydrogen evolution. |
| Duration: | 1.1.2020 – 31.12.2022 |
| EDEVIR – Elektrochemická detekcia vírusov | |
| Electrochemical detection of viruses | |
| Program: | SRDA |
| Project leader: | RNDr. Strečková Magdaléna, PhD. |
| Annotation: | Currently, rapid diagnosis of the SARS-CoV-2 virus presence is limited by the inability to perform bed side PCR,while other assays that detect viral antigens are associated with low sensitivity and specificity. Fast and accuratediagnosis is limiting for quick patient identification, assessment of his contacts and timely epidemiologicalintervention. Affordability is also a condition for quick diagnostics. Therefore, the present project deals with basicresearch aimed at the development of an electrochemical sensor that is able to efficiently and quickly detect thepresence of the virus in biological fluids. Our goal is to study suitable electrode materials for the electrochemicalsensors development that would be able not only qualitatively but also quantitatively to determine the amount ofvirus particles in a sample. The use of these sensors will ensure fast detection (bed side test), low consumption ofmaterials needed for detection, elimination of the use of instrumental and time-consuming methods, allow patientsto self-test, which will ultimately reduce the overall consumption of personal protective equipment.The study of electrochemical sensors for virus detection will bring new knowledge about the preparation ofelectrode materials with a specific composition and morphology. One of the main benefits will be developed. |
| Duration: | 16.9.2020 – 31.12.2021 |
| Výskum progresívnych metód úpravy práškových zliatin určených na prípravu magneticky mäkkých kompozitov | |
| Investigation of the progressive powder processing methods designated for fabrication of the soft magnetic composite | |
| Program: | VEGA |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Annotation: | Excellent powder soft magnetic materials are characterized by limited compressibility due to shape, size and plastic deformation ability. Compressibility is improved by pressing additives. Additives degrade the magnetic properties and resistivity of the soft magnetic composites. Aim of the project is investigation of the progressivemethods of powder alloy processing with focus on modification of powder particles and dielectric coating formation at their surface. Motivation of modifications are improvement of the compressibility, increase in resistivity of the powder alloy thus improvement of functional and mechanical properties of the composites. The project will contribute to evaluation of the physical and technical possibility to utilize the microwaves and high density electric field in modification of metallic powder. It could be expected preparation of the powder alloy ofwhich physical and technological properties will be suitable for the soft magnetic composites production or potentially 3D printing. |
| Duration: | 1.1.2018 – 31.12.2020 |
| MACOMA – Dizajn štruktúry a funkčných vlastností magneticky mäkkých kompozitných materiálov na báze 3-d prechodných kovov | |
| Design of the structure and the functional properties of soft magnetic 3-d transitions metals based composites | |
| Program: | SRDA |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Annotation: | The project focuses on structure and functional properties design of 3-d transition metals based soft magnetic composite materials, in which will be carried out the experimental research of functional properties of advanced materials with heterogeneous structure consisting of isolated ferromagnetic particles. Magnetic micro- and nanocomposite systems will be prepared using advanced powder metallurgy method and current chemical processes. The research will be focused on explanation of the interface influence on the electric, magnetic and mechanical properties investigated magnetic composite materials. Expected results extend the potential for application of advanced soft magnetic materials suitable for use in a medium frequencies, where ferrites are currently used. |
| Duration: | 1.7.2016 – 31.12.2019 |
| Multifunkčné keramické materiály Aurivilliového typu pre pokročilé magnetoelektrické pamäťové zariadenia a senzory | |
| Multifunctional Aurivillius-type magnetoelectrics for advanced data storage and sensor applications | |
| Program: | VEGA |
| Project leader: | RNDr. Kovaľ Vladimír, DrSc. |
| Annotation: | The purpose of the proposed project is to design and prepare novel single-phase Aurivillius-type ceramic materials with improved multiferroic properties at and above room temperature. The research is motivated by the great potential of these materials for non-volatile data storage, transducers, sensors, and many other future device applications. Bismuth-layered structure ferroelectrics, doped on the A- and B- sites by magnetic cations, will be synthesized by solid-state reaction. An innovative method of microwave heating will be introduced along with conventional sintering in processing of ceramics in order to produce at the reduced sintering temperature and time phase pure multifunctional magnetoelectrics with improved properties. The effects of the rare-earth (RE) substitution at Bi sites and modulation of the number of perovskite layers on the crystal structure, microstructure, and electrical and magnetic properties of Aurivillius phase ceramics in the Bi4Ti3O12-(Bi,RE)FeO3 system will be investigated. |
| Duration: | 1.1.2017 – 31.12.2019 |
| Nízkorozmerné systémy pre elektródové a magnetické materiály využité v zelených technológiách | |
| Lowdimensional systems in electrode and magnetic materials potentially applied in green technologies. | |
| Program: | VEGA |
| Project leader: | RNDr. Strečková Magdaléna, PhD. |
| Annotation: | The growing demand for energy and depletion of primary fossil energy resources causes an increasing pressure on use of alternative energy sources in larger scale. The project will be focused on the preparation and development of technologies producing 1D and 2D nanostructures. The carbon fibers incorporating metalnanoparticles represent a prospective materials for catalytic hydrogen evolution. Ferrite thin films and nanofibers are potentially useful for the preparation of soft magnetic composites with low eddy currents and total current losses during magnetization. The needle-less electrospinning technology will be used for fibers production due to cheap, user friendly and production of fibers in a wider scale. The thin ferrite films will be prepared by sol-gel method. The main aim of project concentrates on the effect of input parameters of the solutions influence the finalfunction properties of prepared fibers and films. |
| Duration: | 1.1.2017 – 1.12.2019 |
| Vývoj mikroštruktúry a vlastnosti funkčných kompozitov založených na progresívnych magneticky mäkkých zliatinách | |
| Microstructure development and properties of functional composites based on progressive soft magnetic alloys | |
| Program: | VEGA |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Duration: | 1.1.2015 – 31.12.2017 |
| AMETIST – Biologicky odbúrateľné kovové materiály pripravené práškovými technológiami | |
| Biodegradable metallic materials prepared by powder technologies | |
| Program: | SRDA |
| Project leader: | RNDr. Kupková Miriam, CSc. |
| Project webpage: | http://ametist.saske.sk |
| Duration: | 1.7.2012 – 31.12.2015 |
| Príprava a charakterizácia nanoštruktúrovaných funkčných vrstiev | |
| Preparation and characterization of nanostructured functional layers | |
| Program: | VEGA |
| Project leader: | RNDr. Kupková Miriam, CSc. |
| Duration: | 1.1.2012 – 31.12.2015 |
| PROMALLOY – Progresívne magneticky mäkké materiály na báze viaczložkových zliatin | |
| Progresive soft magnetic materials base on multicomponent alloys | |
| Program: | SRDA |
| Project leader: | RNDr. Strečková Magdaléna, PhD. |
| Annotation: | Perspective soft magnetic composites (SMCs) for various electrotechnical applications are designed as ferromagnetic powder particles coated by very thin dielectric layer. The basic parameters of such prepared SMCs are low coercivity, high value of saturation magnetization and of complex permeability. One of the most important electrical parameter is the high value of specific resistivity, which is ensured by a minimum content of appropriately selected electrical insulating coating with respect to the individual ferromagnetic powder particles completely isolated from each other. The present project is concerned with preparation and overall characterization of SMCs from i) preparation of a ferromagnetic material, ii) through the chemical synthesis of dielectric coatings and the coating process on powder particles, iii) up to final characterization of magnetic, electrical and mechanical properties of the prepared SMCs. Soft magnetic powder material (SMM) will be represented by Permalloy-type alloy (NiFe) with addition of suitable additives prepared by high energetic milling. SMM will be characterized from the microstructure and morphology point of view by use of SEM an XRD analysis. The resulting structural characteristics will be confronted with magnetic properties. The excellent SMM will be selected from prepared alloying powder and further coated by electrically insulating layer. Theprepared core/shell powders will be compacted by powder metallurgical methods (cold uniaxial pressing) and finally heat treatment. The final SMCs will be characterized from material, electrical and last but not least magnetic point of view with regard to a design of functional SMCs for the applications at moderately high frequencies. |
| Duration: | 1.1.2015 – 31.12.2015 |
| MIKROMATEL – Progresívna technológia prípravy mikrokompozitných materiálov pre elektrotechniku | |
| Advanced technology of preparation of micro-composite materials for electrotechnics | |
| Program: | EU Structural Funds Research & Development |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Project webpage: | http://www.imr.saske.sk/project/mikromatel/index.html |
| Duration: | 1.12.2010 – 31.3.2015 |
| Príprava, mikroštruktúra a vlastnosti magnetických kompozitov na báze práškového železa. | |
| Preparation, microstructure and properties of magnetic composites based on iron powders. | |
| Program: | VEGA |
| Project leader: | Ing. Bureš Radovan, CSc. |
| Annotation: | The aim of the project is the study of correlation of powder morphology,microstructure and properties of SMC.Composite powders prepared by chemical methods will be compacted using advanced technology of microwave sintering.Project will focus on:a)study of methods for preparation of composite powders related to their physical and technological properties b)study of the influence of modern compaction methods on microstructure of SMC in comparison with conventional pressing and sintering c)study of changes in electric,magnetic and mechanical properties of composites in dependence on technology of preparation d)correlation of technological parameters,morphology,microstructure a physical properties of SMC.Methods:quantification of morphology and microstructure using image analysis stereology;analysis of electric and mechanical properties.Project will help to explain the microstructure development patterns and nature of changes in the properties of SMC with the aim to achieve homogeneity and isotropy of properties. |
| Duration: | 1.1.2012 – 31.12.2014 |
| MAGCOMP – Mikroštruktúra a vlastnosti mikro a nano-kompozitných materiálov pre stredofrekvenčné magnetické aplikácie | |
| Microstructure and properties of poder micro and nano-composite materials for middle frequency aplications | |
| Program: | SRDA |
| Project leader: | doc. Ing. Dudrová Eva, CSc. |
| Annotation: | The main goal of the project is preparation of isotropic PM micro- and nano-composite materials with optimal distribution of insulation compound with favourable complex of magnetic and mechanical properties for middle frequency magnetic applications. Preparation of powder composite magnetic materials by chemical way will be realized: a) „nanocasting“ of magnetic particles in porous matrix, b) sol-gel method resulted to the preparation of Fe/SiO2 nicro and nanoparticles with core/shell“ structure. Also hybrid composites „inorganic/polymer“ will be prepared based on coated microparticles. Prepared powders will be compacted into shape of cylinder, ring and prism by application of simple cycle of cold pressing and thermal treatment by microwave heating to achieve needful structure and strength, elimination of distortion in Fe lattice and residual stresses. The project proposal imposes interdisciplinary approach of analysis of physical-chemical properties in dependence on size of structural elements of investigated materials. Applied methods will provide knowledge about properties of investigated structures those up to no were not enough examined by these methods. Magneto-structural correlation and magnetic interactions in materials with different degree of size of magnetic active compounds will be explained. Explanation of magnetic interactions will lead to the explanation of macroscopic parameters in direct and alternating magnetic fields under different physical conditions. |
| Project webpage: | http://www.imr.saske.sk/project/magcomp/index.htm |
| Duration: | 1.5.2011 – 31.10.2014 |