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The list of national projects SAS

Institute of Experimental Physics
MICROKELVIN - Quantum matters at very low temperatures
MIKROKELVIN - Kvantové materiály pri ultra-nízkych teplotách
Program:
Project leader: RNDr. Skyba Peter DrSc.
Duration: 1.1.2020 - 30.6.2023
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Aplikácia matematickej fyziky v rôzne škálovateľných systémoch
Program: VEGA
Project leader: RNDr. Pinčák Richard PhD.
Duration: 1.1.2019 - 31.12.2022
Deformation of metastable amorphous and crystalline materials
Deformácia metastabilných amorfných a kryštalických materiálov
Program: VEGA
Project leader: RNDr. Csach Kornel CSc.
Duration: 1.1.2018 - 31.12.2021
Detection of space plasma and energetic particles on board of space probes.
Detekcia kozmickej plazmy a energetických častíc na palube vesmírnych sond.
Program: VEGA
Project leader: Ing. Baláž Ján PhD., akademik IAA
Annotation:The project is oriented to investigation of particle environment of Earth's magnetosphere, interplanetary environment and in magnetospheres of other planets of Solar system, particularly at the field of design and development of space experimental devices. The Department of Space Physics has long history in this topic and has a reach international cooperation with similar workplaces of space research. The project requires procurement of electronic components, mechanical works, travel expenses for meetings, testing and launch campaigns. The current project space activities: - development of charged particle detector ASPECT-L for mission LUNA-Resurs - development of charged particle detector DOK-M for mission Resonance - development of net of UV photometers for airglow study - development of anti-coincidence module ACM for PEP/JDC science suite of the ESA JUICE mission to Jupiter
Duration: 1.1.2019 - 31.12.2021
Electron correlations in disordered superconductors
Elektrónové korelácie v neusporiadaných supravodičoch
Program: SRDA
Project leader: Mgr. Szabó Pavol CSc.
Annotation:Project aims at understanding of the effect of disorder on superconductivity in systems which are close to Superconductor-Insulator Transition as well as in thin films of hydrides. The thin films of MoN, MoC, TiN of various thickness and stoichiometry and on different substrates as well as polycrystalline and nanostructured boron-doped diamond will be prepared. Some of these systems reveal fermionic and some bosonic effects in superconducting state. By means of conductance measurements from DC to optical frequency range as well as by means of the scanning tunneling microscopy and spectroscopy at very low temperatures and in high magnetic field we will address the question of what kind of superconductivity is established in strongly disorderd systems where already quasiparticles out of superconducting state reveal renormalized density of states around the Fermi energy. We want also to understand the appearence of superconductivity in thin films of hydrides. We will explore the effect of disorder changing upon hydrogen content, thickness of film, substrate, microstructure and applied pressure on superconductivity in YHx, TiHx, VHx hydrides and their oxyhydrides.
Duration: 1.7.2019 - 30.6.2023
Exotic quantum states of low-dimensional spin and electron systems
Exotické kvantové stavy nízkorozmerných spinových a elektrónových systémov
Program: SRDA
Project leader: RNDr. Čenčariková Hana PhD.
Annotation:The project is devoted to theoretical study of low-dimensional quantum spin and electron systems, which will be examined by the combination of advanced analytical and numerical methods including among other matters exact mapping transformations, transfer-matrix method, strong-coupling approach, classical and quantum Monte Carlo simulations, exact diagonalization and density-matrix renormalization group method. The obtained theoretical outcomes will contribute to a deeper understanding of exotic quantum states of spin and electron systems such as being for instance different kinds of quantum spin liquids as well as quantum states with a subtle long-range order of topological character or with a character of valence-bond solid. The project will significantly contribute to a clarification of unconventional magnetic behavior of selected low-dimensional magnetic materials and thus, it will have significant impact on a current state-of-the-art in the field of condensed matter physics and material science. On the other hand, a detailed investigation of quantum entanglement will establish borders of applicability of the studied spin and electron systems for the sake of quantum computation and quantum information processing. Another important outcome of the project is to clarify nontrivial symmetries in tensor states of the strongly correlated spin and electron systems affected by either position dependent interactions or changes in lattice geometries, which induce phase transitions of many types.
Duration: 1.7.2017 - 30.6.2021
Frustrated metallic magnetic systems
Frustrované kovové magnetické systémy
Program: SRDA
Project leader: doc. RNDr. Gabáni Slavomír PhD.
Annotation:The up to now experimental and theoretical studies of frustrated magnetic systems (FMS) has been concentrated mainly on dielectric systems. Such systems can be found in 2D and 3D lattices based on equilateral triangles, and in dielectrics the interaction between their spins can be relatively well defined and described. In metallic FMS (M-FMS), which have been much less studied, an important role plays the long-range indirect exchange interaction between the spins mediated by conduction electrons (the RKKY interaction). To the small number of up to now studied M-FMS belong also some rare earth metallic borides having a fcc (e.g.HoB12, ErB12) or Shastry-Sutherland (e.g.TmB4, HoB4, ErB4) structure. This project aims are to investigate experimentally the impact of high pressure (hydrostatic and uniaxial), the influence of alloying and the anisotropy on the magnetic, transport and thermal properties of M - FMS, which has not been studied yet. A pioneering work will be above all the direct observation of magnetic structures of individual phase diagram regions of these M-FMS by spin-polarized scanning tunnelling microscopy. Investigated will be also the dynamics of magnetic structures (the influence of the rate of change of the magnetic field on these structures) and the study of magnetic excitations (by neutron diffraction methods) in selected tetraborides and dodecaborides. The challenging experimental studies, for which both high quality samples and suitable methods are already available, will be supported by the theoretical interpretation of received results, and by the theoretical elaboration.
Duration: 1.8.2018 - 30.6.2022
Functionalization of magnetic nanoparticles for cancer cell detection
Funkcionalizácia magnetických nanočastíc na detekciu rakovinových buniek
Program: VEGA
Project leader: Ing. Koneracká Martina CSc.
Annotation:The presented project is focused on the preparation of a magnetic biocomplex that specifically detects cancer cells; it penetrates into their structure and enables better visualization of the affected areas, using magnetic resonance imaging (MRI), for example. The surface of synthetized magnetic nanoparticles will be functionalized by different amino acids. Several physicochemical methods (spectroscopic, microscopic, calorimetric, magnetic and others) will be used to optimize the nanoparticle functionalization. We will also study the suitability of using modified nanoparticles for MRI. The next step will be the conjugation of a specific antibody to the functionalized nanoparticles (biocomplex) and the study of cell interaction with biocomplex by immunochemical methods. Considering the application purposes of magnetic nanoparticles, one of our goals will be investigation the effect of prepared magnetic biocomplexes on cell viability in combination with magnetic hyperthermia.
Duration: 1.1.2019 - 31.12.2022
Ising superconductors and topologigal phases of the matter
Isingove supravodiče a topologické fázy hmoty
Program: VEGA
Project leader: Mgr. Szabó Pavol CSc.
Duration: 1.1.2019 - 31.12.2022
Classical to quantum crossover in mechanical resonators
Klasicko-kvantový prechod v mechanických rezonátoroch
Program: VEGA
Project leader: RNDr. Človečko Marcel PhD.
Annotation:The material variability and dimensional diversity of mechanical resonators allows us to deliberately change their physical and geometric properties. Thus by reducing their mass / energy content (i.e. by decreasing their size)while simultaneously cooling them to temperatures close to absolute zero, it is possible to use them as a tool to study the crossover between classical and quantum dynamics. The ambition of our project is (i) the study of nonlinear processes in macroscopic resonators based on piezomaterials, (ii) the study of the transition between classical and quantum dynamics by using our custom made mechanical micro and nanoresonators and (iii) to deepen the understanding of fundamental processes of the energy exchange between these resonators and the thermal reservoir leading to the decoherence.
Duration: 1.1.2018 - 31.12.2021
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Kozmické energetické častice zo slnečných erupcií – mnohobodové pozorovanie od Slnka až po Lomnický Štít
Program: VEGA
Project leader: RNDr. Mackovjak Šimon PhD.
Duration: 1.1.2018 - 31.12.2021
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Kozmické žiarenie v heliosfére s terminačnou rázovou vlnou a heliosférickou obálkou
Program: VEGA
Project leader: RNDr. Bobík Pavol PhD.
Duration: 1.1.2020 - 31.12.2023
Alloyed REBCO bulk superconductors
Legované REBCO masívne supravodiče
Program: VEGA
Project leader: Ing. Diko Pavel DrSc., akademik US Slovenska
Annotation:The project is focuses on the research of the influence of alloying (doping) on the structure and superconducting properties of REBCO bulk single-grain superconductors. The effect of alloying on the phase equilibrium, the growth of bulk crystals, the formation of pining centers, magnetic flux picking mechanisms, local and macroscopic superconducting properties in the temperature range achievable by cryocoolers will be investigated. Experimental methods of powder metallurgy, growth of bulk single-crystals, X-ray diffraction, microscopic optical and electron microstructure analysis and electron microanalysis, magnetization measurements and measurement of trapped magnetic field  will be used. The project will be developed in cooperation with the leading foreign laboratories  within the framework of formal  (SIT Tokyo, JTU Shanghai, CAN Superconductors Prague) and the informal(University of Cambridge, KAERI Daegeon, CRISTMAT Caen, FZÚ Prague) cooperation.
Duration: 1.1.2019 - 31.12.2021
Magnetic frustration and superconductivity in 2D and 3D borides
Magnetická frustrácia a supravodivosť v 2D a 3D boridoch
Program: VEGA
Project leader: RNDr. Pristáš Gabriel PhD.
Annotation:Borides form a wide class of materials with different physical properties. Metallic geometrically frustrated magnetic tetraborides (REB4) are 2D frustrated systems and together with their fcc 3D counterparts dodecaborides (REB12) pose an ideal playground for study of 2D/3D interplay of frustration in megnetic systems. Uniaxial pressure, as well as hydrostatic pressure will be the tuning parameters which can change the interaction between magnetic moments. Depending on the direction of uniaxial pressure we will be able to change the magnitude of interactions in different crystallographic directions and test theoretical predictions. A similar crossover between 2D and 3D can be studied also in superconducting borides as YB6, ZrB12 and LuB12. Even if there exist at present time a rather good understanding of the physical properties of bulk metallic borides, there are still serious open questions what will happen if one dimension will be reduced considerably – by preparing thin films of corresponding borides.
Duration: 1.1.2020 - 31.12.2023
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Magnetizačné procesy kompozitov s magnetickými časticami s modifikovaným povrchom
Program: VEGA
Project leader: RNDr. Kováč Jozef CSc.
Duration: 1.1.2020 - 31.12.2023
Multi-target inhibitors of poly/peptides associated with Alzheimer´s disease
Multifunkčné inhibítory poly/peptidov spojených s Alzheimerovou chorobou
Program: SRDA
Project leader: doc. RNDr. Gažová Zuzana CSc.
Duration: 1.7.2019 - 1.6.2023
Supramolecular complexes of proteins – conformational transitions, stability and aggregation
Nadmolekulárne komplexy proteínov - konformačné prechody, stabilita a agregácia
Program: VEGA
Project leader: RNDr. Fedunová Diana PhD.
Annotation:Protein aggregation and self-assembly into supramolecular complexes occurs in various biological processes. Fibrillar aggregates - amyloids are hallmark of various diseases. Amyloid fibrils are part of physiological processes in cells and are also tested as novel biomaterials. The project is focused on study of the effect of two classes of cosolvents on amyloid aggregation of structurally different polypeptides – globular lysozyme and intrinsically disordered Aß peptide. The aim of the project is to find the relation between cosolvent properties and their effect on conformation, stability and kinetics of amyloid aggregation and morphology of obtained fibrils. Elucidation of these relations is important for the understanding of the mechanism of amyloid aggregation and can help to design new therapeutics against amyloid-related diseases, for identification of pathological structural motifs of fibrils as well as in biotechnological application of fibrils as novel materials.
Duration: 1.1.2018 - 31.12.2021
Nanofluids in Electrical Engineering
Nanokvapaliny v elektrotechnike
Program: SRDA
Project leader: RNDr. Rajňák Michal PhD.
Annotation:The submitted project is oriented on research into nanofluids based on alternative cooling and insulating liquid media such as oils based on liquefied natural gas, natural esters and new types of transformer oils. We will prepare novel nanofluids based on these oils by dispersing magnetic nanoparticles, fullerenes, graphene nanoplatelets or carbon nanotubes. The purpose of the nanofluids preparation is to enhance the cooling effectiveness of the liquid media. The nanofluids will be investigated from dielectric, insulating, magnetic and heat transfer properties point of view. Finally, their cooling effectiveness will be tested in loaded power transformers. Therefore, the aim of this project is the development of advanced liquid media for cooling and insulating in electrical engineering, the application of which will have a potential impact on electric power saving, electrical equipment service life and protection of the environment.
Duration: 1.7.2019 - 30.6.2023
Novel statistical and correlation methods in analysis of parametric models of surfaces and their distributions.
Nové metódy v štatistickej a korelačnej analýze parametrických modelov povrchov a ich distribúcií
Program: VEGA
Project leader: RNDr. Marek Jozef PhD.
Duration: 1.1.2019 - 31.12.2021
Novel nano/micro-structured metallic materials prepared by unconventional processing routes
Nové nano/mikroštruktúrované kovové materiály pripravené nekonvenčnými spôsobmi spracovania
Program: SRDA
Project leader: RNDr. Škorvánek Ivan CSc.
Duration: 1.7.2020 - 30.6.2024
Orthorhombic multiferroic materials with strong magneto – electric coupling: effect of substitution in octahedral sites on magnetism and multiferroicity
Ortorombické multiferoické materiály so silnou magneto – elektrickou väzbou: vplyv substitúcie v oktaedrických polohách na magnetizmus a multiferoicitu
Program: VEGA
Project leader: RNDr. Mihalik Marián CSc.
Annotation:Single crystals of RMnxT1-xO3 (R = Nd, Pr, Sm, Tb, Dy and T = Ti, Mn, Fe) will be grown by optical floating zone method. We will study the evolution of the Jahn-Teller distortion of crystal lattice and orbital ordering with substitution of Mn3+with non-active Jahn-Teller ion. We will focus to the construction of magnetic phase diagrams with particular emphasis on determination of magnetic structure by means of magnetization, heat capacity, neutron diffraction measurements and study of critical coefficients. A part of the project is devoted to study of functional nanoparticles. We will pay special attention to tuning of magneto-electric coupling in multiferroic compounds (RMnO3, R = Tb, Dy or RFeO3, R = Gd, Dy) with magnetically induced ferroelectricity by low concentration doping with Ti, Cr and Fe or Mn respectively. Recent study of these systems supposed new physical hypothesis referring the duality of multiferroicity and we hope that our project will contribute to verification of this hypothesis.
Duration: 1.1.2019 - 31.12.2021
Rapidly quenched metallic alloys and composites for magnetic and magnetocaloric applications
Rýchlochladené kovové zliatiny a kompozity pre magnetické a magnetokalorické aplikácie
Program: VEGA
Project leader: RNDr. Škorvánek Ivan CSc.
Annotation:The project addresses the development of novel rapidly quenched alloys with improved functional properties. Its first part will be focused on soft magnetic nanocrystalline alloys with high values of saturation magnetic inductions, which is possible to obtain by lowering of the content of non-magnetic elements in alloy and by utilization of the ultra-rapid annealing technique during the crystallization process. The other part of this project will be devoted to amorphous and nanocrystalline composites in the form of bilayer or trilayer ribbons, with the solid mechanical interface between them. In these heterogeneous systems, we will perform a detailed study of their magnetic properties. In addition, we plan also to optimize their GMI characteristics for potential magnetic sensor applications. In the project, we will focus our attention also on development of rapidly quenched composites with optimized magnetocaloric properties for magnetic cooling in the vicinity of room temperature.
Duration: 1.1.2019 - 31.12.2022
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Samousporiadanie polymérnych a nepolymérnych materiálov v kvapalnom stave na mezoškálach
Program: VEGA
Project leader: RNDr. Sedlák Marián DrSc.
Duration: 1.1.2020 - 31.12.2022
Investigation of nuclear matter properties in heavy quark production on nuclear targets
Skúmanie vlastností jadrovej matérie v produkcii ťažkých kvarkov na jadrových terčíkoch
Program: VEGA
Project leader: doc. RNDr. Nemčík Ján CSc.
Annotation:The main goal of the present project is theoretical study of nuclear effects in various processes on nuclear targets at large energies. The main emphasize is devoted to production of heavy quarks representing an alternative probe for investigation of manifestations and properties of nuclear matter created in heavy-ion collisions.
Duration: 1.1.2018 - 31.12.2021
Tear fluid and saliva in preventive, predictive and personalized medicine
Slzná tekutina a sliny v preventívnej, prediktívnej a personalizovanej medicíne
Program: VEGA
Project leader: RNDr. Tomašovičová Natália CSc.
Annotation:Tear fluid and saliva are non-traditional biological collected material. Collection is non-invasive, which is an advantage compared to blood collection as a standard biological material. It is not colored, contains water and electrolytes, proteins, lipids, hormones and others. Characterization of its composition in various inflammatory diseases with a focus on amyloid formation by using several methods represents an approach of preventive, predictive and personalized medicine. Body fluid content in patients with pathological conditions varies significantly compared to healthy subjects. There are still unexplained interindividual changes in non-traditional body fluids in clinical-diagnostic practice, but these differences may allow personal diagnosis and application of tailor-made treatments.
Duration: 1.1.2020 - 31.12.2022
Systematic study of influence of local and nonlcal interactions on coexistence of quantum phases with different order parameters
Systematické štúdium vplyvu lokálnych a nelokálnych interakcií na koexistenciu kvantových fáz s rôznymi parametrami usporiadania
Program: VEGA
Project leader: RNDr. Farkašovský Pavol DrSc.
Annotation:The proposed project is focused on the complex study of influence of local and non-local interactions, of the Coulomb and spin nature, on the ground state properties of the generalized two-band Hubbard model. The results obtained will be used for a description of anomalous cooperative phenomena in real materials with strongly correlated electrons. The study will include a wide class of cooperative phenomena such as valence and metal-insulator transitions, charge and spin ordering, itinerant ferromagnetism, electronic ferroelectricity, supercoductivity, excitonic matter and will concern a wide class of materials such as nickelates, cobaltates, rare-earth hexaborides and chalcogenides,multiferroics, etc. The emphasis will be put on the study of influence of combined effects of two or more interactions with a goal to describe coexistence of two or more quantum phases with different order parameters (ferromagnetic-ferroelectric state, charge/spin ordering-superconductivity, etc.).
Duration: 1.1.2018 - 31.12.2021
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Štruktúra a dynamika magnetických kvapalín v elektrickom poli
Program: VEGA
Project leader: RNDr. Rajňák Michal PhD.
Annotation:Magnetic fluids (MF) are suspensions of magnetic nanoparticles (MNP) in a liquid carrier. Their behavior in magnetic field is intuitive and scientifically well explored. Within the fundamental research on MF, electrical properties of MF are actively studied, the clear understanding of which requires deeper experimental study. The mechanism of electrical breakdown and structural changes of MF in external electric field belong to the most intriguing properties of MF. The objective of this project is to investigate these phenomena experimentally in MF based on nonpolar liquids. Within the project, the streamer development will be visualized and investigated. The analysis will take into account the model of electric charge trapping on MNP. Dielectric spectroscopy, neutronography and microscopy of MF in electric field will be employed. The other objective is to prove or disprove a hypothesis of electromagnetic coupling between the spontaneous magnetic moment and induced electrical polarization of MNP.
Duration: 1.1.2020 - 31.12.2023
Research of non-trivial superconductivity on selected materials.
Štúdium netriviálnej supravodivosti vybraných materiálov.
Program: VEGA
Project leader: RNDr. Kačmarčík Jozef PhD.
Duration: 1.1.2020 - 31.12.2023
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Štúdium termodynamických vlastností frustrovaných magnetických systémov exaktne riešiteľnými modelmi
Program: VEGA
Project leader: RNDr. Jurčišinová Eva PhD.
Annotation:The main aim of the project will be the study of various thermodynamic properties of antiferromagnetic as well as ferromagnetic frustrated systems in the framework of exactly solvable classical models of the statistical mechanics. In the framework of the realization of the project the main attention will be concentrated on the investigation of their properties related to the frustration such as anomalous low-temperature behavior of the specific heat capacity; magnetocaloric effect and the corresponding (de)magnetization adiabatic cooling processes and their effectiveness; magnetization properties, structure and macroscopic degeneracy of ground states; entropic properties and critical behavior of frustrated systems, as well as the influence of various additional interactions on these properties and processes.
Duration: 1.1.2019 - 31.12.2022
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Teoretické štúdium multifunkčných kvantových nízko-rozmerných magnetických materiálov
Program: VEGA
Project leader: RNDr. Čenčariková Hana PhD.
Duration: 1.1.2020 - 31.12.2023
Influence of chemical composition on unique physical properties of modern functional materials
Vplyv chemického zloženia na význačné fyzikálne vlastnosti moderných funkčných materiálov.
Program: VEGA
Project leader: RNDr. Kováč Jozef CSc.
Annotation:The project is focused on study of the influence of chemical composition on unique physical properties of amorphous and Heusler- based alloys. Mainly, the influence of chemical composition on basic parameters that influence magnetic bistability of amorphous microwires will be studied, which can be employed in construction of miniaturized contactless sensors of magnetic field, temperature and mechanical stress. On the other hand, Heusler -based microwires will be studied that are characterized magnetocaloric effect and shape memory effect. They can be employed in construction of smart actuators that also serves as sensors. The main focus is development of materials with such composition that exhibit above-mentioned effect, but can be produced repeatedly on a large scale.
Duration: 1.1.2019 - 31.12.2021
Development of REBCO superconductors for biomedical applications
Vývoj REBCO supravodičov pre biomedicínske aplikácie
Program: SRDA
Project leader: Ing. Diko Pavel DrSc., akademik US Slovenska
Annotation:The project focuses on the development of REBCO bulk singlegrain superconductors (BSS) for biomedical applications. Their use is envisaged by the small enterprise CRYOSOFT s.r.o. Košice for design of equipments for the magnetic separation of cells and for the magnetic transport of drugs. For these applications, REBCO BSS will be developed for use at temperatures that can be achieved by cryocooling (30-50K). We will study YBCO, SmBCO and GdBCO systems that can meet the requirements for the expected applications. The raw material price for YBCO BSS is lower than for SmBCO and GdBCO BSS, however, the SmBCO and GdBCO are reaching higher values of trapped magnetic field. Within the project solution, the optimized composition and the preparation technology of REBCO BSS will be found in order to achieve efficient pining in high magnetic fields below temperature of liquid nitrogen, which is a prerequisite for achieving high critical current density and high trapped magnetic field. The critical current density will be improved through chemical pining, refining RE211 particles, adding nanofibers. We will take advantage of our previous results in basic and applied research of REBCO BSS, some of which are patent-protected.
Duration: 1.8.2018 - 30.6.2022
The development of translationally relevant regenerative and reparative strategies after spinal cord trauma
Vývoj translačne relevantných regeneračných a reparatívnych stratégií po traumatickom poranení miechy
Program: SRDA
Project leader: MUDr. Musatov Andrey DrSc.
Duration: 1.7.2020 - 30.6.2024

The total number of projects: 33