The list of national projects SAS
Institute of Experimental Physics
-
Analýza obrazových sekvencií metódami hlbokého učenia vo vybraných biofyzikálnych experimentoch
Anomalous scaling in turbulent systems with symmetry breaking
Anomálne škálovanie v turbulentných systémoch s narušenou symetriou
| Duration: |
1.1.2021 - 31.12.2024 |
| Program: |
VEGA |
| Project leader: |
RNDr. Jurčišin Marián PhD. |
| Annotation: | Turbulent behavior belongs among basic properties of various macroscopic physical, chemical, biological,
social-economical, financial, as well as environmental systems. Typical well-known examples of turbulent motions
are various atmospheric phenomena (tornadoes, hurricanes, cyclones, etc.), turbulent streams in rivers and
oceans, and turbulent motions in electrically conductive environments (motion of the outer earth core, solar wind,
etc.) . The main task of theoretical investigations of turbulent systems is, first of all, the understanding of
fundamental physical properties of turbulent flows that are common for all turbulent systems and which could
potentially be applied in technical praxis in the future. In this respect, the main aim of the project is the
investigation of the influence of breaking of various symmetries of developed turbulent environments on the
properties of the anomalous scaling of correlation functions of fluctuating fields as well as on universal
characteristics of turbulent systems. |
-
Dekoherencia v mechanických rezonátoroch pri nízkych teplotách
-
Elektrokatalyzátory pre efektívnu produkciu vodíka pre budúce elektrolyzéry a palivové články
| Duration: |
1.7.2021 - 30.6.2025 |
| Program: |
SRDA |
| Project leader: |
RNDr. Baťková Marianna PhD. |
| Annotation: | The development of activities in the field of hydrogen technologies was also supported by the European
Commission in the strategic document "Hydrogen Strategy for a Climate Neutral Europe". Today, Slovakia has
suggested own national hydrogen strategy. Already in 2015, the National Hydrogen Association has founded to
support research, implementation and use of hydrogen technologies. The Hydrogen Technology Center is being
established in Košice with the main "Power-to-Gas" concept using renewable power energy sources with no
negative impact on human life and without dependence on fossil fuels. A significant source of hydrogen is water
and the electrolysis of water is the most promising technology for hydrogen production. However, before it can be
recognized 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 most
efficient 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-cost alternatives. 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 of
active sites on catalysts to participate in electrode reaction to improve the electrocatalytic efficiency. Therefore, the
main challenge in this project is to reduce the production cost of HER and at the same time to maintain the high
efficiency 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. |
Electron correlations in disordered superconductors
Elektrónové korelácie v neusporiadaných supravodičoch
| Duration: |
1.7.2019 - 30.6.2023 |
| 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. |
Functional magnetic materials with perovskite structure based on rare earth and transition metal oxides
Funkčné magnetické materiály s perovskitovou štruktúrou na báze oxidov vzácnych zemín a prechodných kovov
| Duration: |
1.1.2022 - 31.12.2024 |
| Program: |
VEGA |
| Project leader: |
RNDr. Mihalik Marián CSc. |
| Annotation: | Part of our project deals with multiferroic materials and another with functionality of materials with perovskite
structure in respect to hydrogen storage or application of colloid with nanoparticles for hyperthermia. The project
is targeted to substitutional solid solutions and construction of magnetic phase diagrams in RTO3 system (R = Nd, Pr, Sm, Tb, Dy and T = Ti, Cr, Mn, Fe). Oxygen content affects physical properties of this system. The defect structure can be used for hydrogen storage. Experimental techniques like crystal growth of single crystals, synthesis of magnetic nanoparticles and study of various physical properties are complemented by theoretical approach using Density functional theory. Our project serves as starting point for re-examining the effect of oxygen content on physical properties of RMnO3 multiferroic compounds. The concept of storing hydrogen in the vacancies in these compounds is novel as well smart hyperthermia based on colloid containing magnetic nanoparticles of manganites. |
Interdisciplinary applications of cosmic rays observation and research in the laboratory of Institute of Experimental Physics of SAS at the Lomnicky stit observatory
Interdisciplinárne aplikácie pozorovania a výskumu kozmického žiarenia na pracovisku ÚEF SAV na Lomnickom štíte
| Duration: |
1.1.2022 - 31.12.2024 |
| Program: |
VEGA |
| Project leader: |
Ing. Kubančák Ján PhD. |
| Annotation: | The goal of the project is to create conditions for the further development of interdisciplinary applications of cosmic radiation research at the ÚEF SAS workplace on Lomnické štít, mainly through:
a) maintaining continuity in the field of cosmic radiation observation,
b) innovation and workplace development a
c) intensive scientific cooperation and promotion of the workplace.
The project will focus on the analysis and evaluation of data recorded by the neutron monitor and the SEVAN device during the 24th and the first third of the 25th solar cycle. Scientific work will be intensified in the field of cooperation in the field of radiation protection against cosmic rays and in the field of development and testing of detectors in mixed radiation fields occurring at high-altitude observatories.
One of the results of the project will be a retrospective analysis of the increased or decreased intensity of secondary cosmic radiation in the atmosphere during periods with significant fluctuations in solar activity that occurred in the years 2014-2024. |
-
Iónové kvapaliny a hlboko eutektické zmesi ako modulátory stability a agregácie proteínov
-
Kozmické žiarenie v heliosfére s terminačnou rázovou vlnou a heliosférickou obálkou
Quantum matters at very low temperatures - MICROKELVIN
Kvantové materiály pri ultra-nízkych teplotách - MIKROKELVIN
Magnetic frustration and superconductivity in 2D and 3D borides
Magnetická frustrácia a supravodivosť v 2D a 3D boridoch
| Duration: |
1.1.2020 - 31.12.2023 |
| 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. |
Soft magnetic nanocrystalline materials prepared by unconventional thermal processing techniques
Magneticky mäkké nanokryštalické materiály pripravené nekonvenčnými technikami tepelného spracovania
-
Magnetizačné procesy kompozitov s magnetickými časticami s modifikovaným povrchom
-
Nanočastice pre riešenie diagnosticko-terapeutických problémov s COVID-19 (NANOVIR)
Nanofluids in Electrical Engineering
Nanokvapaliny v elektrotechnike
| Duration: |
1.7.2019 - 30.6.2023 |
| 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. |
Novel nano/micro-structured metallic materials prepared by unconventional processing routes
Nové nano/mikroštruktúrované kovové materiály pripravené nekonvenčnými spôsobmi spracovania
New Insight into the Role of Hydrophobic Interactions in Formation and Stability of Proteins Aggregates. Link to Oxidative Stress.
Nový pohľad na vplyv hydrofóbnych interakcií na tvorbu a stabilitu proteínových agregátov. Prepojenie na oxidačný stres.
Unraveling the early events of protein amyloid aggregation - from mechanism to therapy
Objasnenie počiatočných štádií amyloidnej agregácie proteínov - od mechanizmu k terapii
| Duration: |
1.1.2021 - 31.12.2024 |
| Program: |
VEGA |
| Project leader: |
doc. RNDr. Gažová Zuzana DrSc. |
| Annotation: | Structural changes of poly/peptides leading to the formation of amyloid aggregates are associated with incurable
diseases, like Alzheimer's disease or diabetes. While the general mechanisms of fibril formation and their
characterization are well reported, the early events during poly/peptide fibrillation are still unclear. The project is
focused on understanding the early events mechanisms leading to the formation of pre-fibrillar (partially un/folded
intermediates, nuclei, oligomers) and fibrillar amyloid aggregates of selected globular and intrinsically disordered
proteins. Our focus will be the study of the kinetics of pre-fibrillar structures formation, their morphology, and
cytotoxicity, under various experimental conditions, and in the presence of selected interacting partners (small
molecules, nanoparticles). The obtained results will contribute to understanding the early events of amyloid
aggregation and identifying the inhibitors with therapeutic potential for amyloid diseases. |
Perspective electronic spin systems for future quantum technologies
Perspektívne elektrónové spinové systémy pre budúce kvantové technológie
| Duration: |
1.7.2021 - 30.6.2025 |
| Program: |
SRDA |
| Project leader: |
RNDr. Vargová Hana PhD. |
| Annotation: | The project is aimed at a comprehensive understanding of possibilities and limiting factors of electron spin systems for a quantum computation and quantum information processing, which will be investigated by the combination of advanced analytical and numerical methods including among others exact mapping transformations, localized-magnon theory, exact diagonalization, tensor-network methods, density functional theory, Monte Carlo simulations and density-matrix renormalization group method. In particular, we will examine the possibility to stabilize a bipartite and multipartite entanglement as a genuine quantum phenomenon needed for a quantum computation and quantum information processing at least up to temperature of liquid nitrogen or preferably room temperature. We will also explore the capability of the pulsed electron spin resonance for the spin-qubit manipulation. Quantum spin systems with topologically protected edge states eligible for a topological quantum computation will be investigated in detail together with a few selected quantum spin chains studied in connection with the implementation of a quantum teleportation. Frustrated Heisenberg spin systems supporting either the presence of a nontrivial skyrmion phase or magnon-crystal phases will be investigated in connection with the possibility to store a quantum information or to implement more complex quantum circuits. Heterostructures composed of atomically thin layers coupled by van der Waals forces will be examined with respect to a superconducting pairing and topological quantum computation. The studied electron spin systems will be either motivated by the effort to understand unconventional behavior of existing real magnetic materials or will be supplemented by the respective proposals for their experimental realization. |
Self-organization processes in soft hybrid mixtures of liquid crystals and nanoparticles
Procesy samousporiadania v mäkkých hybridných zmesiach kvapalných kryštálov a nanočastíc
| Duration: |
1.1.2021 - 31.12.2024 |
| Program: |
VEGA |
| Project leader: |
RNDr. Tomašovičová Natália CSc. |
| Annotation: | The proposal aims to approach the research of liquid crystals doped with nanoparticles of different kind from a
novel perspective of the self-organization that has an indisputable importance covering all fields of natural
sciences, and has also a deep impact in social sciences. In such composite systems a subtle interplay among
the nanoparticles, the self-assembling matrix and the topological defects commands the self-organization
process. We will focus on the electric/magnetic field induced self-organization in such systems experimentally on different length scales by investigating the processes in different phases, isotropic, nematic, cholesteric with the anticipation that our results can be exploited in applications such as guided material transport, magnetic/electric switches/sensors, chemical/biosensors, in microfluidic/lab-on-a-chip devices, etc. We are convinced that systematic studies in this topic may change fundamentally current knowledge. |
Heavy quark production as a probe of Quantum Chromodynamics
Produkcia ťažkých kvarkov ako sonda kvantovej chromodynamiky
| Duration: |
1.1.2022 - 31.12.2025 |
| Program: |
VEGA |
| Project leader: |
doc. RNDr. Nemčík Ján CSc. |
| Annotation: | The present project is focused on further development and testing of theoretical descriptions of various phenomena inherent in quantum chromodynamics (QCD) in close connections to recent phenomenological models of particle physics. The main emphasize is devoted to investigation of several fundamental aspects of QCD dynamics in production of heavy quarks, mainly in diffractive quarkonium electroproduction on proton and nuclear targets at large energies highly relevant for ongoing measurements at the Large Hadron Collider and with the preparation of physics program for newly approved Electron-Ion Collider. |
-
Pružné mikroštruktúry a mikroroboty pre biomedicínske labon-chip aplikácie
-
REBCO masívne supravodiče na báze Y, Gd, Sm a Eu pre praktické aplikácie
| Duration: |
1.7.2022 - 30.6.2026 |
| Program: |
SRDA |
| Project leader: |
Ing. Diko Pavel DrSc., akademik US Slovenska |
| Annotation: | The project is focused on research and development of selected REBCO bulk singlegrain superconductors (BSS).
We will examine YBCO, GdBCO, SmBCO and EUBCO systems, which are currently preferred in terms of
mastering their production technology and specific applications. Based on our latest results, we will focus on the
alloying of LREBCO (LRE- light rare earths) with elements that suppress Ba/LRE substitution in the crystal lattice,
the addition of nanocrystalline BaCeO3, the bimodal size distribution of pining centres and the configuration of
holes in REBCO BSS. We will apply the research results in the development of BSS production technology with
optimized superconducting and mechanical properties. The use of the research and development results achieved
within the project is expected by the manufacturer BSS CAN Superconductors s.r.o.
|
-
Štruktúra a dynamika magnetických kvapalín v elektrickom poli
| Duration: |
1.1.2020 - 31.12.2023 |
| 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. |
Structure, superconducting and mechanical properties ov bulk REBCO superconductors
Štruktúra, supravodivé a mechanické vlastnosti masívnych REBCO supravodičov
| Duration: |
1.1.2022 - 31.12.2024 |
| Program: |
VEGA |
| Project leader: |
Ing. Diko Pavel DrSc., akademik US Slovenska |
| Annotation: | The project is focused on the research of the influence of the structure on the superconducting and mechanical properties of the REBCO bulk
single grain superconductors (BSS). The effect of the bimodal particle size distribution of RE211 particles in the REBCO single crystal will be studied, as well as the effect of alloying. Acquired
the knowledge will serve to optimize the preparation parameters and structure of REBCO BSS so that they are achieved
the combination of a high value of the trapped magnetic field and levitation force with increased mechanical
strength. We will use experimental methods of powder metallurgy, bulk single crystal growth, X-ray diffraction, light and electron microstructure analysis, magnetization measurements, measurements
of trapped magnetic field and strength measurement. The project will be solved in cooperation with
leading foreign laboratories within the formal (SIT Tokyo, JTU Shanghai, CAN Superconductors) and
informal (University of Cambridge, CRISTMAT Caen, FzÚ Praha, ) cooperation. |
-
Štúdium a modifikácia vlastností pavúčieho proteínu nadprodukovaného v Escherichia coli
Research of non-trivial superconductivity on selected materials.
Štúdium netriviálnej supravodivosti vybraných materiálov.
Theoretical study of frustrated magnetic systems
Teoretické štúdium frustrovaných magnetických systémov
Theoretical study of cooperative phenomena in strongly correlated electron and spin systems
Teoretické štúdium kooperatívnych javov v silne korelovaných elektrónových a spinových systémoch
| Duration: |
1.1.2022 - 31.12.2025 |
| Program: |
VEGA |
| Project leader: |
RNDr. Farkašovský Pavol DrSc. |
| Annotation: | The proposed project is devoted to the theoretical study of cooperative phenomena in strongly correlated electron and spin systems. The special attention will be paid to specifying the key mechanisms which lead to formation and stabilization of inhomogeneous charge and spin ordering, superconductivity, itinerant ferromagnetism, ferroelectric and magnetocaloric phenomenon due to the big application potential of these phenomena and their possible coexistence. The study will be performed on comprehensive model, which will take into account all relevant interactions in rare-earth and transition metal compounds, where besides the spin-independent Coulomb interaction in d and f band also the spin dependent (double exchange) interaction between both bands will be included. For a solution of this model we plan to elaborate new numerical methods, which will be subsequently used in combination with standard methods of quantum statistical physics (DMRG and QMC) to study the above mentioned phenomena. |
-
Teoretické štúdium multifunkčných kvantových nízko-rozmerných magnetických materiálov
| Duration: |
1.1.2020 - 31.12.2023 |
| Program: |
VEGA |
| Project leader: |
RNDr. Vargová Hana PhD. |
| Annotation: | Multifunctional magnetic materials represent an ideal platform for nowadays technological demands. Reduced
dimensions drag out their quantum properties opening thus new paradigms for possible utilization. The project
aims to study exotic quantum states in low-dimensional magnetic materials. We plan to utilize first principles
calculations based on density functional theory with the aim to propose and solve realistic effective quantum spin
models for representative systems, which exhibit an enhanced magnetoelectric and/or barocaloric response in a vicinity of classical or quantum phase transitions. The present proposal focuses on frustrated quantum
Heisenberg spin systems with flat bands appearing due to a destructive quantum interference, magnon-crystal
phases (Wigner crystal of magnons) relevant for technological applications and one-dimensional quantum spin chains suitable for quantum information processing. |
-
Topologicky netriviálne magnetické a supravodivé nanoštruktúry
-
Vývoj biomodelov pre zlepšenie hodnotenia účinnosti liekov a látok, ktoré majú potenciál pri liečbe COVID-19 (BIOVID-19)
The development of translationally relevant regenerative and reparative strategies after spinal cord trauma
Vývoj translačne relevantných regeneračných a reparatívnych stratégií po traumatickom poranení miechy
The total number of projects: 33
