Information Page of SAS Organisation

Institute of Experimental Physics

International projects

Atmospheric electricity and secondary cosmic radiation
Atmosferická alektrina a sekundárne kozmické žiarenie
Program: Medziakademická dohoda (MAD)
Project leader: Mgr. Langer Ronald
Annotation:A continuation of recently started joint investigation into the relation between atmospheric electricity and dynamics, secondary cosmic radiation and space weather is proposed. A special focus will be paid to events that occur during thunderstorms, e.g., to enhanced count rates that were observed in particle detector SEVAN during periods of large electric fields, and search for a possible detection of particles during individual atmospheric discharges. The study will be based on measurements of electrostatic field, electromagnetic radiation from lightning, meteorological data, and energetic particles and gamma-rays on Lomnický peak. A further improvement and extension of measurement setup around Lomnický peak is anticipated. Atmospheric electric field will also be measured at several places in the Czech Republic. The main goal of the proposed project is a better understanding of mechanisms that couple atmospheric electricity and thunderstorms with energetic particles (radiation) and space weather. Both statistical approach and analysis of individual events will be performed.
Duration: 1.1.2018 - 31.12.2020

AMAZON - Dynamical study of formation/destruction of protein amyloid aggregatess targeted by magnetic zeolite nanocomposites
Dynamické štúdium amyloidnej agregácie proteínov pomocou magnetických zeolitových nanočastíc
Program: JRP
Project leader: doc. RNDr. Kopčanský Peter CSc.
Annotation:Abnormal protein aggregation and accumulation of formed fibrils are characteristic features for a range of, if not all, neurodegenerative disorders such as Alzheimer’s, Huntington’s, Parkinson’s, as well as non-neuropathic amyloidosis. Nanoparticles (NPs), attributed to its particularities in sizes, chemical composition and surface properties, have already been found effective in influencing amyloid fibrils. Our preliminary results acquired on amyloid fibrils incubated with in-laboratory synthesized Fe3O4 nanoparticles (MNPs) indicated reductive potential of MNPs on formation of amyloid fibrils, and also suggested facilitation of inhibiting preformation and eradication of amyloid fibrils may be plausible when the fibrils are exposed to external radiation in presence of MNPs. Also, with our previously reported photoluminescence properties of natural zeolite (CZ) which is a promising material for biomedicine and pharmaceutics due to its non-toxicity, thermal stability, expanded surface area, and exceptional ability to adsorb various atoms, organic molecules and nanoparticles into micro- and mesopores, we plan to apply the MNPs with CZ, developing multiphoton excitation microscopy (MPEM), and other appropriate instruments to establish the dynamical investigation of amyloid fibril formation and remodeling in real time. Prior to in vivo experiment, cytotoxicity in different type of cells and animal models such as zebrafish and mice will be evaluated.
Duration: 1.1.2018 - 31.12.2020

Elastic micro-tools for optical manipulation of biological objects
Elastic micro-tools for optical manipulation of biological objects
Program: Medziakademická dohoda (MAD)
Project leader: doc. Ing. Tomori Zoltán CSc.
Duration: 1.1.2019 - 31.12.2021

EMP - European Microkelvin Platform
Europská Mikrokelvinová Platforma
Program: Horizont 2020
Project leader: RNDr. Skyba Peter DrSc.
Project web page:https://emplatform.eu/
Duration: 1.1.2019 - 31.12.2022

ALICE experiment at the CERN LHC: The study of strongly interacting matter under extreme conditions
Experiment ALICE na LHC v CERN: Štúdium silno interagujúcej hmoty v extrémnych podmienkach
Program: CERN/MŠ
Project leader: RNDr. Králik Ivan CSc.
Annotation:The project is aimed at the study of strongly interacting matter under extreme conditions of the p-p, p-Pb and Pb-Pb collisions at the energies of the LHC collider at CERN. The main program of the ALICE experimemt is the study of the quark-gluon plasma properties.
Project web page:http://osf.saske.sk/sk/?id=vyskum&sub=experimenty_ALICE
Duration: 1.1.2016 - 31.12.2020

ATLAS experiment on LHC in CERN: deep-inelastic events and new physics at TeV energies
Experiment ATLAS na LHC v CERN: hlboko-nepružné javy a nová fyzika pri TeV energiách
Program: CERN/MŠ
Project leader: doc. RNDr. Bruncko Dušan CSc.
Project web page:http://www.saske.sk/UEF/OSF/ATLAS/atlas_1.html
Duration: 1.1.2016 - 31.12.2020

FMF - Flexible Magnetic Filaments: Properties and Applications
Flexibilné magnetické vlákna: Vlastnosti a aplikácie
Program: ERANET
Project leader: doc. RNDr. Kopčanský Peter CSc.
Annotation:Different technologies for synthesis of flexible magnetic filaments are developed. These include linking magnetic micro-particles by DNA, attaching magnetic nanoparticles to polyelectrolyte bundles, extraction of magnetosomes from magnetotactic bacteria and other. Flexible magnetic filaments are interesting for applications as self-propelling microdevices(for targeted transport), micro-mixers (for microfluidics), different sensors(micro rheology). Numerical algorithms for predicting their behavior in magnetic fields of different configurations will be developed, including algorithms based on curve dynamics, lattice Boltzmann method, Brownian dynamics. Obtained numerical results will be compared with experimental results of measurement of flows fields around magnetic filaments, their buckling instabilities. As a result new technology will be developed for DLS measurements giving access to characteristics of translation and rotational motion of string like magnetic micro-objects.
Duration: 1.9.2018 - 31.8.2021

AMON-net - Follow-up of feasibility study to observe ionospheric disturbances by airglow monitoring network (AMON-net)
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Program: Iné
Project leader: RNDr. Mackovjak Šimon PhD.
Duration: 1.10.2018 - 30.9.2020

CAMBIOMN - Complementary analytic methods for the determination of the biodistribution of the magnetic nanoparticles
Komplementárne analytické metódy na určenie biodistribúcie magnetických nanočastíc
Program: Bilaterálne - iné
Project leader: Ing. Koneracká Martina CSc.
Annotation:The main objective of the proposed project is focused on the design and synthesis of magnetic nanoparticles as a potential candidate for hyperthermia, transport delivery and chemotherapy/radiotherapy treatment. The special effort is devoted to their biodistribution investigation due to the combination of complementary physico-analytical methods. Basic concept includes procedures (i) to obtain well-defined magnetic nanoparticles available for medical applications, (ii) to characterize the products under welldefined and reproducible conditions, (iii) to develop proper combination of physico-analytical methods towards detailed biodistribution analyses. In the context of the proposed project, special effort will be focused on the systematic study of the optimization of magnetic nanoparticles synthesis with suitable functional properties and sufficient response to the selected analytical methods for determination of their biodistribution. It is expected that such attitude will result in protocol for preparation and study biodistribution of magnetic nanoparticles in as low as possible concentrations that could significantly decrease undesirable side effects of treatment. Besides that, such project will significantly contribute to the (i) bilateral cooperation and transfer of knowledge between experts in chemistry, physics, biology and pharmacy; (ii) the optimization of the real structure and bioaccumulation investigation of the prepared products; (iii) presentation and publication of common results on high impact factor journals and important international conferences; (iv) networking/base for further cooperation in highly attractive scientific field regarding biophysics/nanomedicine.
Duration: 1.1.2019 - 31.12.2020

MGFS - Metallic geometrically frustrated systems
Kovové geometricky frustrované systémy
Program: Medziakademická dohoda (MAD)
Project leader: doc. RNDr. Gabáni Slavomír PhD.
Annotation:The principal aim of this project is to establish the microscopic anisotropy parameters and the relevant terms for the magnetic interaction in MGFS. Despite significant experimental and theoretical work, such parameters are unknown for the compounds (e.g. TmB4, HoB4) which form a Shastry Sutherland lattice (SSL) as well as for the highly symmetric face centered cubic (fcc) lattice based systems (e.g. HoB12). The experimental approach will be magnetisation measurements as a function of field direction, neutron diffraction combined with modelling techniques like WIEN2K, McPhase or SpinW. The oscillatory RKKY exchange interaction parameters are expected to be susceptible to applied pressure as well as to alloying. Suitable methods and oriented samples of rare earth borides are available. Crystal field anisotropy is theoretically described by a multipole expansion of the electric field. The crystal field level splitting parameters will be determined from magnetisation and specific heat data, as a function of field direction, as well as from inelastic neutron diffraction on powder samples, typically using software like McPhase. The goal of this part is a description of anisotropy of TmB4, HoB4 and the symmetric fcc – counterparts HoB12 and TmB12. The second set of parameters needed for understanding of the Hamiltonian are the magnetic interactions. They will be determined from the dispersion relations measured using neutron spectroscopy on HoB4 and HoB12 along different crystallographic directions and in applied magnetic field. These parameters depend on details of the RKKY interaction which as a cross check can also be obtained from first principles, using packages like WIEN2K. This type of experiments will be carried out at the HZB Berlin on isotopically enrich Ho11B4 and Ho11B12 samples, which are available and first testing experiments were already carried out. We intend to verify results by high pressure experiments (we assume pressures up to 10 GPa in diamond pressure cells) which is associated with the increase of itinerant electron concentration in MGFS, and thus with the change of parameters as well as changes of critical fields and temperatures. This aim will cover MGFS based on the SSL structure as well as systems based on the fcc structure. Another option to verify results is alloying. We will study the effect of substitution of magnetic ions like Tm3+ and Ho3+ ions by nonmagnetic Lu3+ ions. Necessary devices and samples for this research are available.
Duration: 1.1.2019 - 31.12.2020

Cosmic rays as observed at two high mountain observatories: BEO Moussala and Lomnicky Stit
Kozmické žiarenie pozorované na dvoch vysokohorských observatóriách: Moussala a Lomnický štít
Program: Medziakademická dohoda (MAD)
Project leader: Mgr. Langer Ronald
Annotation:The main idea of the project is bilateral cooperation between two European high mountain stations (Lomnický štít, Slovakia and BEO Moussala, Bulgaria) in the field of solar phenomena (or extreme space whether events) as Forbush decrease (FD) and modulation effects on galactic cosmic rays (GCR), and their possible correlation with meteorological parameters. A Forbush decrease is a rapid decrease in the observed galactic cosmic ray intensity following a coronal mass ejection (CME). It occurs due to the magnetic field of the plasma solar wind sweeping some of the GCR away from Earth. The FD is usually observable by particle detectors on Earth within a few dаys аfter the CME, аnd the decrease takes place over the course of a few hours. Over the following severаl dаys, the sоlar cоsmic ray intensity rеturns tо nоrmal. Peer reviewed article (2) from 2009 found that low clouds contain less liquid water following Forbush decreases, and for the most influential events the liquid water in the oceanic atmosphere can diminish by as much as 7%. Further work (3, 4) found no connection between Forbush decreases and cloud properties until the connection was found in diurnal temperature range (5) and since confirmed in satellite data (6). 8NM64 neutron monitor measures continuously cosmic rays at Lomnický Štít (2634 m a.s.l., rigidity cut-off ~4GV) with high statistical accuracy (average count rate ~440 s-1) since December 1981 (7). The muon telescope at BEO Moussala (2925 m a.s.l., rigidity cut-off ~6.3 GV) is in operation since August 2006. The averaged yearly data show good anti-correlation with the averaged sun-spot number for the period August 2006 – June 2017 (to be published elsewhere), several FDs were also detected (8, 9 and 10). The CR data from the two stations will be analyzed for 11 years period and correlations between their variations and meteorological parameters will be investigated (11, 12). The effect of strong electric field around the time of the thunderstorms will be searched both at Moussala and at Lomnický štít with help of similar detector systems SEVAN being in operation at both stations as it was done recently for Lomnický štít (15). This may be especially importance because of different shape of surface at the stations (Lomnicky stit is rather sharp in altitude profile). The physics behind climate change is still a subject of discussion and in need of further analysis (13). The standard method of examining the effect of CR on CC is to search for a correlation of the time series of the two quantities: CC and CR (14). There are numbers of factors which need to be kept in mind, as follows: the presence of a correlation between CR and CC; the nature of CC; Global, spatial variability; Global temporal variability; Altitude differences. In what follows we examine the comprehensive meteorological data from the Lomnicky stit (LS) and BEO Moussala mountain observatories in comparison with Global data to answer the question: is there support for the hypothesis that CR contribute significantly to the local climate, by way of enhanced cloud cover? References 1. "Extreme Space Weather Events". National Geophysical Data Center. 2. "Cosmic ray decreases affect atmospheric aerosols and clouds". Geophys. Res. Lett. 17 June 2009 3."Atmospheric data over a solar cycle: no connection between galactic cosmic rays and new particle formation". 4."Sudden Cosmic Ray Decreases. No change of cloud cover" (PDF). 5."Forbush decreases – clouds relation in the neutron monitor era". Astrophys. Space Sci. Trans. 31 August 2011. 6. Svensmark, J; Enghoff, M. B.; Shaviv, N; Svensmark, H (September 2016). "The response of clouds and aerosols to cosmic ray decreases". J. Geophys. Res. Space Physics. 121 (9): 8152–8181. Bibcode:2016JGRA..121.8152S. doi:10.1002/2016JA022689. Retrieved June 5, 2017. 7. http://www.beo.inrne.bas.bg/BEOBAL/Conf_Pres/111.pdf 8. Angelov I., E. Malamova, J. Stamenov, The Forbush decrease after the GLE on 13 December 2006 detected by the muon telescope at BEO – Moussala, Advances in Space Research, 2008, v.43, n.4, p. 504-508, doi:10.1016/j.asr.2008.08.002 9. Tchorbadjieff Assen, Christo Angelov , Ivo Angelov , Todor Arsov , Ivo Kalapov, Nina Nikolova, Aneta Boyadjieva, Detection of coronal mass ejections (CMEs) in the period of march–may 2012 at Moussala peak, Comptes rendus de l’Academie bulgare des Sciences (C. R. Acad. Bulg. Sci.) vol 66, No 5, pp. 659-666, 2013 10. Assen Tchorbadjiev, Ivo Angelov, Christo Angelov, Nina Nikolova, Todor Arsov, Ivo Kalapov, Ani Boyadjieva, “Detection of Solar particle events in March 2012 at Moussala”, Bulgarian Astronomical Journal, 18(2), 2012, http://www.astro.bas.bg/AIJ/issues/n182/08-ATchorbad.pdf 11. Jordan Stamenov, Nina Nikolova, Luchezar Georgiev, “Correlation between cosmic rays intensity variation and nitrogen oxides in the atmosphere”, Issue Paradigma, pp. 134-140, 2010 12. Luchezar Georgiev, Nina Nikolova, Miloslav Katsarov, “Modeling and experimental research in Forbush-effect on the radiation background on the territory of the Republic of Bulgaria”, XI-th National Youth Science Conference, Federation of the Scientific-Engineering Unions in Bulgaria, ISSN: 1314-0698, 2013 (13) M. Kancírová, K. Kudela, A.D. Erlykin and A.W. Wolfendale, Relevance of long term time – series of atmospheric parameters at a mountain observatory to models for climate change, Journal of Atmospheric and Solar-Terrestrial Physics, http://dx.doi.org/10.1016/j.jastp.2016.08.002 (14) M. Kancírová, K. Kudela, Atmospheric Research 149 (2014) 166–173 (15) K Kudela, J. Chum, M. Kollarik, R. Langer, I. Strharsky and J. Base, Correlations between secondary cosmic ray rates and strong electric fields at Lomnicky stit, JGR Atmospheres, accepted September 26, doi: 10.1002/2016JD026439
Duration: 1.1.2018 - 31.12.2020

MAGBIO - Magnetic nanocomposites for biomedicine
Magnetické nanokompozity pre biomedicínu
Program: Bilaterálne - iné
Project leader: RNDr. Zentková Mária CSc.
Annotation:Multidisciplinary project is devoted to synthesis and characterization of magnetite and manganite based magnetic nanocomposites with application potential for hyperthermia. Magnetic nanoparticles produced by various synthetic routes will be functionalized by methods of surface chemistry and tested for amount of the heat loss in the presence of alternating current magnetic field at frequencies and amplitudes causing no harm to patients. Aspects of biocompatibility and nontoxicity of prepared nanocomposites will be studied as well.
Duration: 15.2.2019 - 31.12.2020

Multifunctional magnetic materials - research into structure and physical properties
Multifunctional magnetic materials - research into structure and physical properties
Program: Medziakademická dohoda (MAD)
Project leader: RNDr. Zentková Mária CSc.
Annotation:The object of the collaboration is investigation of the magnetic, structural and thermodynamic properties of new magnetic materials such as manganites, magnetic oxides and molecule-based magnets. Of particular importance is the search for functional materials with light-, temperature- or pressure-controlled properties as well as magnetic molecular nanosystems. Collaboration in this area between the Institute of Nuclear Physics PAS and the Institute of Experimental Physics SAS lasts for over twelve years. We have carried out common studies of several molecular magnets, workers of INP PAN take regularly part in the triennial CSMAG conference organized in Košice. We are in possession of different but complementary measurement instruments. Therefore, the continuation of the joint project, aimed at a more comprehensive description and understanding of properties of new magnetic materials, would be purposef
Duration: 19.2.2019 - 31.12.2021

Nanocohybri - NANOSCALE COHERENT HYBRID DEVICES FOR SUPERCONDUCTING QUANTUM TECHNOLOGIES
NANOSCALE COHERENT HYBRID DEVICES FOR SUPERCONDUCTING QUANTUM TECHNOLOGIES
Program: COST
Project leader: prof. RNDr. Samuely Peter DrSc., akademik US Slovensko
Annotation:Superconducting technologies are prime candidates to ripen quantum effects into devices and applications. The accumulated knowledge in decades of work in understanding superconductivity allows scientists now to make experiments by design, controlling relevant parameters in devices. A new field is emerging whose final objective is to improve appliances taking advantage of quantum effects, be it for dissipationless transport of current, generation of high magnetic fields, sensors or quantum information. The field will impact crucial areas for societal development, including energy, transport, medicine or computation. Quantum behavior is controlled by using hybrids of superconductors with magnets, insulators, semiconductors or normal metals. Traditionally, the scientific and technical communities working in superconductivity are spread across projects from different calls, whose activities put Europe at the frontier of research. The present Action aims to address the pressing need for a common place to share knowledge and infrastructure and develop new cooperative projects.To this end, we have set-up a program including networking activities with an open, proactive and inclusive approach to other researchers and industry. We will develop the concept of a Virtual Institute to improve availability of infrastructure and knowledge, and focus on contributing to gender balance and the participation of young researchers. The proposal aims to avoid duplication of resources and skills in a subject traditionally dominated by small groups working independently. This will optimize European efforts in this area and uncover our full potential, thus maintaining and developing Europe’s leading position in superconducting quantum technologies.
Duration: 18.10.2017 - 17.10.2021

MAGBBRIS - New MAGnetic Biomaterials for Brain Repair and Imaging after Stroke
Nové magnetické biomateriály pre obnovu mozgu a zobrazovanie po mozgovej príhode
Program: ERANET
Project leader: doc. RNDr. Kopčanský Peter CSc.
Annotation:By engineering novel magnetic nano-biomaterials we will achieve tissue repair in the context of an ischemic event. We will take advantage of nanotechnology to deliver therapeutic growth factors, secreted by progenitor cells, into the injured brain. According to the World Health Organization, 15 million persons suffer a stroke worldwide eachyear. However, the only available treatment is the acute thrombolytic therapy (pharmacological or mechanical) which is being administered to less than 10% of stroke patients due to strict selectioncriteria. In contrast, neuro-repair treatments could offer the opportunity to include most strokepatients by extending the therapeutic time window. MAGBBRIS will demonstrate that growth factors, secreted by endothelial progenitor cells, with proved potential to induce tissue repair, can be encapsulated in magnetic biomaterials and be successfully and safely transplanted into mouse brains to induce tissue repair. In the ischemic brain, the secretome will be retained by an external magnetic field in the vasculature, improving vascular remodelling and neurogenic tissue regeneration after stroke.
Duration: 1.3.2018 - 28.2.2021

MAGSAT - Novel soft magnetic cores tailored for use in space qualified magnetometers and satellite devices
Nové magneticky mäkké jadrá pre satelitné zariadenia a magnetometre pracujúce v kozmických podmienkach.
Program: JRP
Project leader: RNDr. Škorvánek Ivan CSc.
Duration: 1.9.2018 - 31.8.2021

Preparation and study of structural and magnetic properties of core/shell CoFe2O4/Fe3O4 nanoparticles for advanced magnetic hyperthermia
Príprava a štúdium štruktúrnych a magnetických vlastností CoFe2O4/Fe3O4 nanočastíc typu "core/shell" pre použitie v magnetickej hypertermii
Program: Medziakademická dohoda (MAD)
Project leader: RNDr. Škorvánek Ivan CSc.
Duration: 1.1.2020 - 31.12.2021

JUICE-PEP-ACM - Slovak contribution to ESA-JUICE mission: Development of Anti-Coincidence Module ACM for Particle Environment Package PEP
Slovenský príspevok k misii ESA-JUICE: Vývoj anti-koincidenčného modulu ACM pre časticový komplex PEP
Program: Iné
Project leader: Ing. Baláž Ján PhD., akademik IAA
Annotation:The ESA’s JUICE (JUpiter ICy moons Explorer) mission (http://sci.esa.int/juice) have to face to very hostile environment of Jovian radiation belts where the penetrating energetic electrons dominate. The Particle Environment Package (PEP) payload of this mission (http://sci.esa.int/juice/50073-science-payload ) is under development within a wide international collaboration led by Swedish Institute for Space Physics IRF in Kiruna. Due to limited available mass for efficient radiation shielding, the PEP payload will operate in rather unfavourable environment of penetrating energetic electrons that will affect the detection process inside the PEP/JDC (Jovian plasma Dynamics and Composition) sensor. To mitigate the unfavourable influence of the penetrating electron radiation to the plasma ions detection process, a concept of anti-coincidence module (ACM) has been identified within the PEP consortium. The project involves development of space-flight grade semiconductor solid state detector, the processing electronic board and a laboratory testing and calibration system RATEX-J (RAdiation Test EXperiment for JUICE).
Duration: 15.11.2018 - 30.10.2020

SPACE:LAB - place to attract, educate and involve young generation in space science and engineering
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Program: Iné
Project leader: RNDr. Mackovjak Šimon PhD.
Duration: 1.12.2018 - 30.11.2020

Investigation of graphene covered superconducting nanostructures by scanning tunneling microscopy
STM štúdium grafénom pokrytých nanoštruktúr
Program: Medziakademická dohoda (MAD)
Project leader: Mgr. Szabó Pavol CSc.
Annotation:The proposed project represents a continuation of our previous collaboration, which we started in the framework of our common APVV SK-Hu-2013-0039 project „Elaboration and characterization of graphene layers with controlled nanoscale rippling” in 2015. In this project, we have studied the physical properties of tin/graphene hybrid nanostructures applying low temperature STM microscopy and spectroscopy. We have shown, that the graphene cover layer acts as a passivating layer and protects the tin nanoparticles from oxidation. Our low temperature STM results prove that superconductivity is induced in grapheme both, when directly directly supported by tin nanoparticles or suspended among them. These results have been published in our common paper in a prestigious journal Carbon [A. Pálinkás, et al., Carbon 124 (2017) 611-617].
Duration: 1.1.2019 - 31.12.2021

- - Study of the protein amyloid aggregation in vitro and in cerebrospinal fluid
Štúdium amyloidnej agregácie proteínov in vitro a v mozgomiešnom moku
Program: Medziústavná dohoda
Project leader: doc. RNDr. Gažová Zuzana CSc.
Annotation:Study of the amyloid aggregation of the protein in vitro and in the samples of the cerebrospinal fluid of the peoples with amyloid-related disease which obtain protein aggregation in vivo.Test of the assay for cerebrospinal fluid of the dementic and non-dementic peoples.
Duration: 13.7.2015 - 31.12.2020

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Štúdium nových feromagnetických nanokompozitov
Program: Medziústavná dohoda
Project leader: RNDr. Kováč Jozef CSc.
Duration: 1.1.2019 - 31.12.2021

TESTIMONIES - Theoretical and Experimental Study of Transition Metal Oxyhydride Nanomaterials for Superconductivity and Photocatalysis
Teoretické a experimentálne štúdium nanomateriálov na báze oxyhydridov prechodových kovov pre supravodivosť a fotokatalýzu
Program: ERANET
Project leader: doc. RNDr. Flachbart Karol DrSc., akademik US Slovensko
Duration: 1.10.2019 - 30.9.2022

Ordering and self-organization of magnetic nanoparticles in liquid crystals
Usporiadanie a samoorganizácia magnetických nanočastíc v kvapalných kryštáloch
Program: Medziakademická dohoda (MAD)
Project leader: RNDr. Lacková Veronika PhD.
Duration: 1.1.2019 - 31.12.2021

RBS - Research on bulk superconductors
Výskum masívnych supravodičov
Program: Iné
Project leader: Ing. Diko Pavel DrSc., akademik US Slovensko
Annotation:The agreement on cooperation between IEP SAS and CAN Superconductorsis focused on research od REBCO bulk supercondyctors for practical applications.
Duration: 1.5.2018 - 30.4.2023

Nanoradiomag - Development and production of water-dispersible radionuclide labeled magnetic nanoparticles
Vývoj a príprava rádionuklidmi značených magnetických nanočastíc dispergovaných vo vodnom prostredí.
Program: EUREKA
Project leader: Ing. Koneracká Martina CSc.
Duration: 1.1.2018 - 31.12.2020


National projects

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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

ECODISC - Electron correlations in disordered superconductors
Elektrónové korelácie v neusporiadaných supravodičoch
Program: APVV
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

EXSES - Exotic quantum states of low-dimensional spin and electron systems
Exotické kvantové stavy nízkorozmerných spinových a elektrónových systémov
Program: APVV
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

FRUSTKOM - Frustrated metallic magnetic systems
Frustrované kovové magnetické systémy
Program: APVV
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.
Project web page:http://extremeconditions.saske.sk/projects/
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

Interactions of relativistic nuclei, eta-meson nuclei and spin physics
Interakcie relativistických jadier; eta-mezónové jadrá a spinová fyzika
Program: VEGA
Project leader: Mgr. Mušinský Ján PhD.
Duration: 1.1.2018 - 31.12.2020

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

Quantum matters at very low temperatures
Kvantové materiály pri ultra-nízkych teplotách
Program: Iné projekty
Project leader: RNDr. Skyba Peter DrSc.
Duration: 1.1.2020 - 31.12.2023

QuTeMaD - Quantum Technologies, Materials and Devices
Kvantové technológie. materiály a zariadenia
Program: APVV
Project leader: prof. RNDr. Samuely Peter DrSc., akademik US Slovensko
Annotation:Within the project we will focus on development of particular devices based on superconductors or superconducting circuits working up to quantum limit. One of the main goal of the project is a practical amplifier which bring real and considerable improvement over the high electron mobility transistor (HEMT) amplifiers. Our aim is to go beyond the state-of-the-art and fabricate subquantum-limited parametric amplifier, a key element for quantum information processing with microwaves. In order to achieve this aim we will investigate novel quantum materials which can improve properties of quantum devices. Therefore, the fundamental research of new topological materials including topological insulators and superconductors will thus be a logical and integral part of our project.
Duration: 1.7.2017 - 31.12.2020

ARES - Alloyed REBCO bulk superconductors
Legované REBCO masívne supravodiče
Program: VEGA
Project leader: Ing. Diko Pavel DrSc., akademik US Slovensko
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

Macroscopic anisotropic composites based on liquid crystals and magnetic nanoparticles
Makroskopicky anizotrópne kompozity na báze kvapalnych kryštálov a magnetických nanočastíc
Program: VEGA
Project leader: RNDr. Tomašovičová Natália CSc.
Annotation:The proposal targets basic research on composite materials consisting of liquid crystals and various magnetic nanoparticles. Combination of the anisotropic properties of liquid crystals with the magnetic properties of the nanoparticles results in composites with unique magnetic and optical properties that the component materials themselves do not possess. The proposed studies concentrate on the increase of the sensitivity of our composite soft matter materials (liquid state) to magnetic fields and prepare new materials having unique dielectric, magnetic and optical properties. The main goal of the proposal is to influence the sensitivity of these anisotropic systems to external magnetic field by adding suitable magnetic nanoparticles and by this way make a step forward towards potential applications in various magneto-optical or dielectric devices as for example sensors of low magnetic fields or light shutter.
Duration: 1.1.2017 - 31.12.2020

MULTIHIT - Multi-target inhibitors of poly/peptides associated with Alzheimer´s disease
Multifunkčné inhibítory poly/peptidov spojených s Alzheimerovou chorobou
Program: APVV
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

NANOELEN - Nanofluids in Electrical Engineering
Nanokvapaliny v elektrotechnike
Program: APVV
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

NANOSEG - Nanosegregation in soft matter of polymeric and nonpolymeric nature
Nanosegregácia v mäkkých látkach polymérneho a nepolymérneho charakteru
Program: APVV
Project leader: RNDr. Sedlák Marián DrSc.
Duration: 1.7.2017 - 31.12.2020

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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

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

Functional and Structural Insights into the Phospholipid-Protein Interaction during Oxidative Stress
Oxidačný stres a fosfolipidovo-proteínové interakcie: funkčné a štrukturálne dôsledky
Program: VEGA
Project leader: MUDr. Musatov Andrey DrSc.
Annotation:Mitochondria play a critical role in cells metabolism and mitochondrial dysfunction has long been implicated in age-related neurodegenerative diseases. One currently accepted theory is that damage to mitochondria, the main source of reactive oxygen species (ROS), initiates these diseases. In fact, when ROS levels overpower the cell’s defenses (oxidative stress), proteins, nucleic acids and/or lipids are irreversibly damaged. Particularly important is that oxidative stress disrupts or modifies the protein-lipid interactions what is one of the essential features of normal cell operation. Such disruptions could be a decisive factor leading to ROS-induced diseases. To test this hypothesis and clearly elucidate the links between mitochondrial oxidative stress and cells dysfunction we propose to investigate both, (i) the role of phospholipid modification in ROS-induced damage to mitochondrial electron transport Complex IV, and (ii) the role of phospholipids and oxidatively modified phospholipids in amyloidogenesis.
Duration: 1.1.2017 - 31.12.2020

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

Self-assembly of poly/peptides into amyloid aggregates – mechanism, inhibition and cytotoxicity
Samousporiadanie poly/peptidov do amyloidných agregátov - mechanizmus, inhibícia a cytotoxicita
Program: VEGA
Project leader: doc. RNDr. Gažová Zuzana CSc.
Annotation:Amyloid supramolecular complexes formed by poly/peptides are the most prevalent naturally occurring self-assembling systems. Formation of such complexes affects function of poly/peptides and is associated with more than 30 serious amyloid-related diseases such as Alzhemer’s disease or diabetes mellitus. The exact mechanism of amyloid self-assembly of poly/peptides is not known yet and no effective treatment of amyloidosis is established. The goal of the project is to study the mechanism of the amyloid aggregation of poly/petides with different native structures and identification of inhibitors of poly/peptide self-assembly since the inhibition of amyloid formation is one of the possible therapeutic approaches against amyloid-related diseases. We will focus on the determination of the correlation between the morphology of amyloid aggregates and their cytotoxicity as well as on the relationship between structure of the effective inhibitors and their anti-amyloid activity.
Duration: 1.1.2017 - 31.12.2020

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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 - 31.12.2023

Skúmanie vlastností jadrovej matérie v produkcii ťažkých kvarkov na jadrových terčíkoch
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

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Slzná tekutina a sliny v preventívnej, prediktívnej a personalizovanej medicíne
Program: VEGA
Project leader: RNDr. Tomašovičová Natália CSc.
Duration: 1.1.2020 - 31.12.2023

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.
Duration: 1.1.2020 - 31.12.2023

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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

Study of universal properties of diffusion proceses in turbulent environments
Štúdium univerzálnych vlastností difúznych procesov v turbulentných prostrediach
Program: VEGA
Project leader: RNDr. Jurčišin Marián PhD.
Annotation:One of the basic attributes of macroscopic physical, chemical, biological, and also social-economical and environmental systems is their stochasticity. This fact is the main reason for present intensive scientific interest about various stochastic systems. Advection of various admixtures in random environments, turbulence and magnetohydrodynamic turbulence, or crossing of cosmic particles through interstellar space, are typical examples. The importance of intensive Investigation of these problems is dictated by need for fundamental understanding of the physical nature of phenomena which are involved in them, as well as from the point of view of their potential future applications in technical praxis. The aim of the project is the study of the anomalous scaling of structure and correlation functions of fluctuating fields in turbulent systems without and with symmetry breaking, as well as the study and the calculation of universal characteristics of such turbulent systems.
Duration: 1.1.2017 - 31.12.2020

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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

The role of surface states in samarium hexaboride and other valence-fluctuating systems exhibiting metal-insulator transition
Úloha povrchových stavov v hexaboride samária a iných zmiešanovalenčných systémoch vykazujúcich prechod kov-izolátor
Program: VEGA
Project leader: RNDr. Baťková Marianna PhD.
Annotation:Samarium hexaboride (SmB6) represents an important model system exhibiting metal-insulator transition. A mysterious property of this valence fluctuating semiconductor is that at lowest temperatures it does not reveal divergency of electrical resistivity, but behaves as a metal. SmB6 is nowadays intensively studied also as a possible topological insulator, while metallic topologically protected surface is considered to be a reason of absence of insulating ground state. However, the latest results provide evidence about trivial surface states in SmB6. The project aims to evaluate the role of surface states in electrical conduction of SmB6 by investigating SmB6 thin films, to evaluate relevance of the scenario of topological insulator and other alternative approaches to explain electrical conductivity in SmB6, thus to contribute to understanding the nature of electronic transport in SmB6 and similar systems.
Duration: 1.1.2017 - 31.12.2020

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

BMREBCO - Development of REBCO superconductors for biomedical applications
Vývoj REBCO supravodičov pre biomedicínske aplikácie
Program: APVV
Project leader: Ing. Diko Pavel DrSc., akademik US Slovensko
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

Projects total: 65