The list of national projects SAS

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Institute: Institute of Physics

2D materials beyond graphene: monolayers, heterostructures and hybrids
2D materiály iné ako grafén: monovrstvy, heteroštruktúry a hybridné vrstvy
Program: SRDA
Project leader: Dr. Rer. Nat. Šiffalovič Peter PhD.
Annotation:Two-dimensional (2D) materials have been one of the most extensively studied classes of materials due to their unusual physical properties. The best example is graphene – a single layer of carbon atoms arranged in a two dimensional (2D) honeycomb lattice. Many graphene´s extraordinary properties have been reported including excellent electronic and thermal conductivities and mechanical properties. Its discovery has also stimulated an extensive research on other 2D materials. It has been shown that it is not only possible to exfoliate stable, single-atom thick 2D materials, but that these materials can exhibit unique and fascinating physical properties. The 2D structure determines the electronic properties that may exhibit correlated electronic phenomena such as charge density waves and superconductivity. In this project, we focus on preparation of ultrathin (< 10 nm) films and monolayers of materials from the family of transition metal dichalcogenides (TMDs). The goal is to prepare those layers on a centimetre-large scale. For that, pulsed laser deposition and magnetron sputtering are the methods of our choice. As-prepared layers will then be thoroughly characterised in terms of their thickness, crystallinity, homogeneity, optical and electrical properties. As a next logical step, we will proceed in preparation of heterostructures and hybrids – systems where different TMDs materials and TMDs and graphene or graphene oxide are stacked on top of each other, respectively.
Duration: 1.7.2016 - 31.12.2019

2D materials and their functionality
2D-materiály a ich funkcionalizácia
Program: SRDA
Project leader: prof. Ing. Štich Ivan DrSc.
Annotation:2D - MAT&FUN project is conceived as an international project on graphene and graphene - like 2D materials and their functionalization aiming at tailoring their electronic, magnetic, spintronics, and sensorics properties. The quest is to harness the synergy between theory and experiment groups and between theo ry and theory groups represented by three top - end - of the line theory (CCMS at Institute of Physics SAS (CCMS), University of Regensburg (UREG), and North Carolina State University (NCSU)) and two experimental groups (Osaka University (OUNI) and Justus Lieb ig University Giessen (JLUG)). Primary role of the proposer, CCMS, will be studies using ultra - accurate computational studies based on explicitly correlated many - body techniques, such as quantum Monte Carlo (QMC). Our preliminary results clearly indicate t hat use of these accurate techniques is imperative for reliable description of functionalization of these materials with d - electrons, for accurate description of electronic properties, or for description of energetics of catalytic or sensoric properties of these novel materials. The QMC studies will be supported by the experts at the NCSU. The results of our correlated modeling will serve as inputs into more coarse - grained spintronics modeling at the spintronics group at UREG. Our computer modeling will als o serve as back - up support for the primarily SPM experiments at the OUNI and JLUG on this group of materials. As a basic research project the main outcomes are expected in the form of outstanding results publishable in highest - impact journals, numerous cit ations and invited talks at international conferences. These research results will be accompanied by public outreach activities in daily press and by events targeting primarily, but not exclusively, the high school students via strong presence at Tournamen t of young physicists, Olympiad of young scientists, Researcher’s night, etc, where top - end of the line scientific results will be highlighted.
Duration: 7.1.2016 - 31.12.2019

Atomic structure and exceptional properties of intermetallics, amorphous, nanocrystalline and complex metallic alloys
Atomárna štruktúra a unikátne vlastnosti intermetalík, amorfných, nanokryštalických a komplexných kovových zliatín
Program: SRDA
Project leader: Ing. Švec Peter DrSc.
Annotation:The project is focused on explanation of structures and properties of new complex metallic, metastable amorphous and nanocrystalline alloys and intermetallic systems where new properties will be achieved by targeted technological, compositional and shape modification on different length scales an d by selected physical processing. Properties, observed phenomena and structures of bulks and surfaces and micro - mechanisms governing their formation and stability will be analyzed and interpreted jointly by the most modern computational and experimental m ethods and approaches ranging from macroscopic down to chemically resolved atomic scales. The focus will be put, a.o. on soft magnetic systems with high saturation magnetization, systems with potential replacement of 4d transition metals and strategic rare - earth elements by more abundant metals, especially in multicomponent alloys with high entropy and comlex metallic alloys. One of the aims of the proposed project will be investigation of chemical reactivity and catalytic properties of surfaces of intermet allic transition - metal based alloys (Ni, Pd, Cu, ...) and nanoporous Au. Important new aspect of the project lies in development and application of special techniques of thermal processing in high magnetic fields for targeted modification of properties of ne w materials.
Duration: 1.7.2016 - 31.12.2019

Efficent preparation of powdered magnesium hydrid directly from the magnesium melt
Ekonomická príprava práškového hydridu horčíka z roztaveného horčíka
Program: SRDA
Project leader: Ing. Švec Peter DrSc.
Annotation:Magnesium hydride is one of the most promising materials for safe storage and transport of hydrogen. It is mostly produced by long term mechanical milling and is thus very expensive what greatly limits its practical application. This applied research project is therefore aimed to verify economically attractive method of magnesium hydride production via direct spraying of molten magnesium or its complex alloy with compressed hydrogen and produce th us proper structure for repeatable storage of hydrogen. The subject of the research is to study the effect of the composition of the melt, cooling rate, gas pressure and size of the powder particles onto the amount of hydrogen absorbed in the solid powder. In addition, the ability of such powder to absorb and desorb the hydrogen repeatedly without excessive creation of passive layer on the powder particle surfaces will be determined. The ways of further use of powder after exhausting its ability to effectiv ely bind hydrogen will be examined as well. The successful results of the project could revolutionary help in the storage of energy from clean and renewable sources, thus contributing to the formation of sustainably clean environment.
Duration: 1.7.2015 - 30.6.2018

Exotic quantum states of low-dimensional spin and electron systems
Exotické kvantové stavy nízkorozmerných spinových a elektrónových systémov
Program: SRDA
Project leader: Mgr. Gendiar Andrej PhD.
Duration: 1.7.2017 - 30.6.2021

Experimental investigation of nuclear reactions and nuclear structure using the Tandetron beams
Experimentálne štúdium jadrových reakcií a jadrovej štruktúry s využitím zväzkov z tandemového urýchľovača
Program: VEGA
Project leader: Mgr. Venhart Martin PhD.
Annotation:Tandem accelerator of the Tandetron type with a terminal voltage of 2 MV was installed in the branch office IP SAS in Piestany. It allows for the production of beams of protons, deuterons and alpha particles with precise energy between 100 keV - 4 MeV and intensity of 1 microA. In addition, to the application program of the laboratory and the program of solid state physics, that are not parts of this project we intend to use this accelerator to study the nuclear structure of neutron inelastic scattering method and the study of nuclear reactions that are important to nuclear astrophysics. Alpha process consists of nuclear reactions of (alpha, gamma) type leading in the stars to the burn of helium and production of 16O, 20NE, 24mg, 28SI, 32S, 36Ar, 40Ca, 44Ti, 48Cr, 52Fe and 56Ni isotopes. These are exothermic reactions, which energy is released via gamma radiation. Measurements of the cross section of these reactions are very important in terms of parameters of models describing the production of various isotopes and their abundance in the universe. The project will focus on investigation of the 20Ne(alpha, gamma)24Mg, 22Ne(alpha, gamma)26Mg and 24Mg(alpha, gamma)28Si for which there are no data available for the excitation function at energies of alpha particles is less than 6 MeV. This energy corresponds very well to the possibilities that are provided by the Tandetron machine in Piestany. Extremely powerful, but relatively seldom used method for the study of nuclear structure, specifically a low-spin, is the inelastic scattering of fast neutrons with the detection of gamma rays. When a tunable neutron source of mono-energetic neutrons is used, the excited states can be studied near the threshold for their production. This eliminates the common problems associated with the population from upper states. This threshold may furthermore be very accurately determined experimentally. This provides the unique location of levels from which the gamma rays originate in the level scheme. Moreover, it is possible to accurately measure the excitation function, i.e, dependence of the cross section on the neutron energy, for given gamma ray. These allow the determination of spin for level from which gamma rays originate. For neutron energies of a few MeV, inelastic scattering is the non-selective statistical process, i.e., it populates all states within the given range of energy and angular momentum. As a result, the angular distribution of the emitted radiation allows to establish spins of excited states and transition multipolarities. Measurements of lifetimes of excited levels are of extreme importance for nuclear physics, since they allow direct determination of reduced transition probabilities. They are a measure of collectivity of excited states of atomic nuclei. The most important part of information that can be obtained from inelastic scattering methodology are lifetimes within the 10 fs - 1 ps range, which can be obtained from measurements of Doppler shift of gamma lines. Gamma spectra were measured using a coaxial HPGe detector at a distance of 1 m from the sample and the lifetime is deduced from the line centroids according to the angle. Both parts of the program require to find a solution for a number of technological problems. These solutions will be an integral part of the project.
Duration: 1.1.2017 - 31.12.2019

Physical properties of organic compounds and water confined in mesopores of inorganic matrices
Fyzikálne vlastnosti organických látok a vody uväznených v mezopóroch anorganických matríc
Program: SRDA
Project leader: RNDr. Šauša Ondrej CSc.
Annotation:Experimental investigations of phenomena connected with a matter confined in nanoscale. Manifestation of limited number of molecules confined in mesopores. Investigation of dynamics of such systems, especially structures and transport properties.
Duration: 1.7.2017 - 30.6.2021

Physical properties of water confined in mesopores and cryoprotectans
Fyzikálne vlastnosti vody uväznenej v mezopóroch a kryoprotektíva
Program: VEGA
Project leader: RNDr. Šauša Ondrej CSc.
Annotation:The project will be about the study of physical properties of water confined in mesopores of selected matrices. It will be go mainly about the investigation of crystallization process depended on the pore sizes, matrice type and presence of matter which suppress the crystallization . The knowledge of this processes is very important not only from the point of view of basic research but also from practical view – water is a basic substance of living organism and we need for deposition of living cellular structures at low temperatures protect of water crystallization inside such systems. The suitable method for the study of physical and chemical properties such confined systems is positron annihilation spectroscopy in combination with DSC. Unique of solution of our plans is the application of free-volume concept on the study of processes going on molecular level, where are a determining factors of macroscopic matter properties, as well as in using of positronium as subnanometer probe for free volume study.
Duration: 1.1.2017 - 31.12.2020

Graphene-based nanoplatform for detection of cancer
Grafénová nanoplatforma na detekciu rakoviny
Program: SRDA
Project leader: Dr. Rer. Nat. Šiffalovič Peter PhD.
Annotation:This project proposal reflects current technological progress and new opportunities in biomedical applications of graphene-based sensors. Our main goals include the design and development of a graphene oxide multifunctional nanoplatform (GO-MFN) for the detection of tumor cells. In the first step, the development of graphene oxide nanoflakes of appropriate size functionalized by monoclonal antibody is planned. For sensing the tumor cells, GO-MFN of 100 nm size able to interact with a single cell will be prepared. Magnetic nanoparticles added to GO-MFN will enable the inspection of deep tissues by nuclear magnetic resonance. The degree of oxidation of GO, type of the functional groups, optimal functionalization with covalently bound monoclonal antibodies and magnetic nanoparticles, are the most important technological steps. The analysis of the basic interactions related to tumor sensing will be conducted in vitro on 2D and 3D cell models up to the proof-of-principle stage that will be directly applicable to laboratory and preclinical testing. The GO-MFN interaction with the cell membrane and with the cell interior will be analysed with subcellular resolution. Such an approach will bring original knowledge and a detailed understanding of the tumor sensing process that is important for the optimization of the sensor sensitivity. Detection of biomolecules bound to GO-MFN will beaddressed in real time by several techniques. The project is based on a complex multidisciplinary approach, ranging from physics and chemistry up to biomedicine and combining excellent science and the most sophisticated nano and bio-engineering. The involved partners possess
Duration: 1.7.2015 - 30.6.2019

Smart MoS2 platform for cancer diagnosis and targeted treatment
Inovatívna MoS2 platforma pre diagnózu a cielenú liečbu rakoviny
Program: SRDA
Project leader: Dr. Rer. Nat. Šiffalovič Peter PhD.
Annotation:The goal of the proposed project is to develop a novel smart 2-dimensional multifunctional nanoplatform based on MoS2 for cancer cell detection and treatment. The MoS2 nanosheets prepared by liquid phase exfoliation and/or Li intercalation and modified for low toxicity and high biocompatibility will be chemically functionalized with antibodies sensitive to specific cancer cells and relevant cytotoxine. In comparison to graphene based nanosheets the MoS2 provides much stronger signal for the advanced laboratory diagnostics such as Raman spectroscopy, X-ray methods, SEM and TEM. Strong Raman signal and photoluminescence of MoS2 nanosheets will allow a label-free in situ tracking of the nanoplatform localization at the cell level. This will be one of the original project contributions to the knowledge of the cell interaction with the functional nanoplatform in general. The new quality of the laboratory testing of the nanoplatform interaction with the cancer cells may bring new knowledge and essential progress in the field of 2D nanoplatform generally. New knowledge is expected also in terms of a smart handling of biocompatibility and toxicity of the nanoplatform which is important for the nanoplatform cell internalization. Newly elaborated technological procedures will have direct implications for tailored 2D materials technology.
Duration: 7.1.2016 - 30.6.2020

Low energy nuclear astrophysics
Jadrová astrofyzika pri nízkych energiách
Program: VEGA
Project leader: Ing. Gmuca Štefan CSc.
Annotation:The project deals with low energy proton and alpha capture reactions relevant to the rp- and gamma-processes in stars during their lives. elastic scattering of p- and alpha-particles to be studied complementary to capture reactions. The Dirac-hartree-Fock approach for nuclear matter to be mapped on the relativistic mean field model at the price of density dependent couplings. Subsequently, the model to be used to calculate the structure of neutron stars, one of remnants of collapsing massive stars.
Duration: 1.1.2016 - 31.12.2019

Quantum theory on graphs and networks
Kvantová teória grafov a sietí
Program: SRDA
Project leader: Doc. Mgr. Ziman Mário PhD
Annotation:The tasks and goals of this project are motivated by the development of effective quantum algorithms, quantum-chemistry simulations and distributed quantum information based innovations. The common denominator of all our key tasks is the concept of a network, graphically representing complex quantum-mechanical systems and the (topological) relationships among them. This network depicts interactions (in a general sense) between quantum systems, or their mutual correlations. In this project, we divided our research questions about quantum networks into three logical groups representing the above-mentioned areas.
Duration: 1.7.2015 - 28.6.2019

Lignin as Composite Component for Phenol - Formaldehyde Resins and Wood - Plactic Composite
Lignín ako kompozitný komponent do fenolformaldehydových živíc a drevoplastu
Program: SRDA
Project leader: prof. Ing. Štich Ivan DrSc.
Annotation:Proposed project of applied research is focused on the utilization of lignin in the preparation of phenol - formaldehyde resins and wood - plastic composites. These materials are planned as part of a portfolio of industrial partner of the project, the company Chemko, a. s. Slovakia, based in Strážske. The lignin is used as an alternative comp onent for a various applications. To maintain competitiveness on the market, renewable resources will be used in the form of lignin in cooperation with innovative methods of characterization and preparation of materials. The goal of this project is the sp ectral and microscopic characterization of input components and final materials, following the mechanical characterization and connection to the material macroparameters. These parameters are used as a tool for innovative processes in terms of cost, ecolog y and production based on renewable resources. This topic is eminently current and this project provides a synergy of excellent research based on the sophisticated techniques and theory towards innovative applications.
Duration: 1.7.2016 - 30.6.2019

Local hamiltonians in quantum complexity
Lokálne hamiltoniány v kvantovej zložitosti
Program: SASPRO
Project leader: Mgr. Nagaj Daniel PhD.
Duration: 1.9.2015 - 1.9.2018

Memory and causal structures and applications in quantum information processing
Memory and causal structures and applications in quantum information processing
Program: VEGA
Project leader: Doc. Mgr. Ziman Mário PhD
Annotation:Control of quantum dynamics is crucial for successful implementation of the ideas of quantum information processing. This project focuses on the role of memory effects and causality in the framework of quantum dynamics and their exploitation in qualitatively novel applications of quantum information processing. In particular, we will investigate mathematical structures of open system dynamical maps (induced by master equations generalizing the Schrodinger equations), develop resource theory for programmable quantum processors, identification of the microscopic essence of non-Markovianity, analyze benefits of non-causal probabilistic framework of quantum dynamics for information processing, and design verification protocols for detection of interesting memory features.
Duration: 1.1.2017 - 31.12.2019

Microstructure and sorption properties of carbon fibers prepared by carbonization of cellulose precursors
Mikroštruktúra a sorpčné vlastnosti uhlíkových vlákien pripravených karbonizáciou celulózových prekurzorov
Program: VEGA
Project leader: RNDr. Maťko Igor CSc.
Annotation:Submitted project involves the basic research in the field micropores of carbon fiber (MPCF) with considerable application impact. Project outgoing from original process of preparation of basic MPCF type with strong adsorption properties. For to optimize use of the MPCF will be needed detail knowledge of their physical properties (microstructure, porosity) and find the conditions to control of the microstructure formation during creation fiber and so to manage pore size. It is the purpose of the project.The originality of solution is consisting in the and subsequent application of a combination of different physical methods for the study MPCF. , which will be result assesment for suitable conditions of carbonization process and knowledges of MPCF properties. Will be used standard sophisticated technique (electron microscopy) as also non-standard method of characterization MPCF as is positron annihilation spectroscopy, thermo porosimetry and gamma spectrometry at the study of sorption properties.
Duration: 1.1.2017 - 31.12.2020

Monitoring of the hygrothermal regime of the UNESCO object of St Jame's Church in Levoči and national herritage object St Martin's Cathedrale in Bratislava
Monitorovanie tepelno - vlhkostného režimu UNESCO pamiatky kostola sv. Jakuba v Levoči a národnej pamiatky katedrály sv. Martina v Bratislave
Program: VEGA
Project leader: Ing. Hudec Ján PhD.
Duration: 1.10.2016 - 31.12.2018

Nanoparticles-based sensors of gaseous biomarkers of diseases
Nanočasticové senzory pre plynné biomarkery chorôb
Program: SRDA
Project leader: Ing. Ivančo Ján PhD.
Annotation:Project has an experimental character and it focuses to investigations on sensors of trace concentrations of some volatile organic compounds, namely acetone and formaldehyde. Both compounds can be detected in exhaled breath of a human reflecting specific morbid changes in organism. They are therefore referred to as biomarkers of diseases. Sensors are based on assembled nanoparticle layers: their conductivity varies in dependence of the nature and concentration of an adsorbed gas. Such sensor is referred to as the chemiresistor. The project deals with the design and fabrication of particular nanoparticles and nanoparticle layers, characterization of their transport, structural, optical, and morphological properties with the accent to sensing properties of final sensors. The objective of the project are functioning sensors and better understanding the response mechanism of the nanoparticle chemiresistors to specific gas and vapors. Applicable sensing layer /sensors would eventuate to simple and affordable, and thereby personal testers for monitoring of particular diseases, e.g. diabetes, in future.
Duration: 1.7.2015 - 28.6.2019

Atomically resolved structure and properties of complex metallic materials
Nanoštruktúra a vlastnosti komplexných kovových materiálov
Program: VEGA
Project leader: Ing. Švec Peter DrSc.
Duration: 1.1.2017 - 31.12.2020

Novel stabilized and structurally ordered optically and photoelectrically active organic materials
Nové stabilizované a štruktúrne usporiadané opticky a fotoelektricky aktívne organické materiály
Program: VEGA
Project leader: Ing. Nádaždy Vojtech CSc.
Annotation:The project is aimed at the acquisition of new knowledge and its use in research and development of organic molecular systems as functional parts of optical thin-film and photovoltaic elements based on their unique properties. It is the development of chemical techniques for material synthesis based on thiophenes and pyrroles, the preparation technology, the structure study of ordered polymer systems, and the analysis of the optical and electrical properties. Research is directed towards the preparation of organic materials with improved stability (chemical, thermal, optical) to the environment for molecular electronics.
Duration: 1.1.2015 - 31.12.2018

Advancement of knowledge in area of advanced metallic materials by use of up - to - date theoretical, experimental, and technological procedures
Rozvoj poznatkovej bázy v oblasti pokročilých kovových materiálov s využitím moderných teoretických , experimentálnych a technologických postupov
Program: SRDA
Project leader: Ing. Švec Peter DrSc.
Annotation:The project is focused on the acceleration of progress in gaining knowledge about advanced metallic materials. In the related research the representative part of the Slovak scientific basis will be involved, namely the Slovak University of Technology (STU) in Bratislava, the Institute of Physics (IP) of the Slovak Academy of Sciences (SAS), and the Institute of Materials Research (IMR) of SAS. To fulfil project tasks, the top - level recently provided equipment will be use d, available at the university scientific parks of STU located in Bratislava and Trnava as well as at the scientific centres of SAS located in Bratislava (IP) and Košice (IMR). The experimental research will be combined with calculations from first princip les (IP SAS) and thermodynamic predictions (IMR SAS), both the procedures, which the involved researchers reached a world - wide acceptance in. From the thematic point of view, the project implies theoretic and experimental studies of advanced metallic mate rials mainly related to phase equilibria (new phase diagrams will be proposed and the existing will be refined on), characterization of crystal structures of un - and less - known complex phases, electrochemical and catalytic properties of surfaces, and innov ations in production of thin layers, coatings, and ribbons. Expected results will be published in stages in relevant scientific journals, used by the involved researchers in educational process, and consulted eventually with industrial partners to conside r the transfer of technological findings in praxis. All the involved institutions have a huge experience with the science promotion and are ready to exert it in the project.
Duration: 1.7.2016 - 30.6.2020

Weak Randomness in Quantum Protocols
Slabá náhodnosť v kvantových protokoloch
Program: VEGA
Project leader: Doc. RNDr. Plesch Martin PhD.
Annotation:Security is one of the most used words nowadays, whether in science, politics, economy or every-day life. Meaning of this word has, however, changed significantly throughout recent decades. To be secure means often to have more information than the enemy rather than to have a more powerful army than the enemy. It is of a vital importance for the whole community to achieve security of any information that is being communicated worldwide. The aim of this project is to question and re-establish security in a specific domain of protocols, namely protocols utilizing properties of Quantum physics. Many of these protocols are believed to be secure in most situations, hence we will concentrate on a very specific kind of attack, where an adversary can influence the sources of randomness used in protocols. Preliminary results show that this capability of an adversary can significantly reduce the security of existing protocols or their particular implementations and it is thus important to examine this problem in detail.
Duration: 1.1.2015 - 31.12.2018

Structure of the nuclear matter
Štruktúra jadrovej hmoty
Program: SRDA
Project leader: Mgr. Venhart Martin PhD.
Annotation:Project deals with fundamental nuclear physics and research and development of devices for experimental nuclear physics. Neutron-deficient Au isotopes will be studied by means of the in-beam gamma-ray spectroscopy. Possibilities for neutron-rich isotopes will be investigated. Research and development will be done in new laboratory, which is based on the Tandetron accelerator and is located in town of Piešťany. Gas target for production of mono energetic fast neutrons will be developed. Unique tape transportation system for radioactiveion beam facilities will be developed.
Duration: 1.7.2016 - 30.6.2020

Theoretical investigation of hyperons and heavy exotic mesons
Teoretický výskum hyperónov a ťažkých exotických mezónov
Program: VEGA
Project leader: Mgr. Bartoš Erik PhD.
Annotation:Latest results measured on the collider BEPC-II with very intensive beams of electrons and positrons allows to extract the information on the electromagnetic structure of nucleons that is in good agreement with other experiments. BEPC-II also allows for the first time to elaborate separate measurements of electric and magnetic structure of baryons in time-like region. It seems essential to have the model which predicts the behavior of the parameters characterizing these structures of baryons. The project aims to implement theoretical predictions in the framework of our elaborated model. Related issue is the evaluation of observables for the decay of heavy mesons in the framework of covariant quark model, which are the subject of interest for a research at today's accelerators.
Duration: 1.1.2017 - 31.12.2020

The behaviour of new progressive construction materials in aggresive enviroment of molten salts
Vlastnosti nových progresívnych konštrukčných materiálov v agresívnom prostredí roztavených solí
Program: SRDA
Project leader: Ing. Švec Peter DrSc.
Annotation:Proposed project deals with the complex research of corrosion processes on advanced construction materials that take place in aggressive molten fluoride salts. Research objects are special alloys and ceramic materials for high temperature applications prepared by different methods and consequently thermally threated . The study of the corrosion induced microstructure degradation is a key part of the project. The main objective is to understand corrosion damage of microstructure of construction materials in molten salts using multidisciplinary combination of techniques . Based on these techniques it is possible to analyse and characterise also very gentle changes in local structure of corrosion interlayers on atomic level between molten medium and material at elevated temperatures. Complex information on physical nature of particular molten systems is in centre of interest, as well. The combination of diffraction, imaging and spectral methods in combination with theoretical calculation enable us to determine structural characteristics of new phases formed in the corrosion process. Evaluation of the processes that take place will provide permanent share in studied field. This share can be even generalised and applied in many other fields.
Duration: 1.7.2016 - 30.6.2020

Properties of the graphene-diamond interface: study on the atomic level
Vlastnosti rozhrania grafén-diamant: štúdium na atomárnej úrovni
Program: SRDA
Project leader: Dr. Rer. Nat. Šiffalovič Peter PhD.
Annotation:The performance of electronic devices made of graphene substantially depends on the interactions of graphene with a substrate beneath, mostly silicon substrate covered with oxide layer. The reasons are numerous: remote phonon scattering, charge traps, adsorbed dopants, etc. Recently it was proven that changing silicon to diamond substrate significantly improved performance of the graphene devices. However, theoretical calculations of interactions at the graphene – diamond (GOD) interface vary and often contradict each other. Systematic experimental studies related to the nature of GOD interactions are missing. In our project we propose experimentally to realize systems of graphene-on-diamond by different routes that will result in different GOD interfaces. We will investigate the atomic and electronic structures using HRTEM/STEM with atomic resolution, and perform other complementary characterizations. We will also produce GOD field effect devices and will relate the transport properties to the resolved structure at the GOD interface. The final goal is to understand the interactions between graphene and diamond and their relation to electronic transport.
Duration: 1.7.2017 - 31.12.2020

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Výskum elektrických a optických vlastností nanoštrukturovaných polovodičových rozhraní
Program: VEGA
Project leader: RNDr. Pinčík Emil CSc.
Duration: 1.7.2017 - 31.12.2019

Research of physical properties and growth kinetics of black silicon layers
Výskum fyzikálnych vlastností a kinetiky formovania vrstiev čierneho kremíka
Program: SRDA
Project leader: RNDr. Pinčík Emil CSc.
Duration: 1.7.2016 - 30.6.2019

Study of deformed DLTS signal.
Výskum skreslenia DLTS signálov.
Program: VEGA
Project leader: Ing. Rusnák Jaroslav PhD.
Annotation:The research shall focus on the causes of transient response distortion DLTS (Deep Level Transient Spectroscopy) and the development of methods for DLTS analysis with such transient responses. It particularly concerns the study of semiconductor structure properties, which are also used for solar cells, as well as alternative energy sources. Another step in this research will be the development, or, as the case may be, modification of existing measuring systems to measure the electrical properties of the structures, based on new prospective electronic circuits, which will be widely used in basic research in semiconductor structures. It will be portable, with the option of USB computer connection and use in education.
Duration: 1.1.2017 - 31.12.2019

Research of the nanomachining technology for active surfaces of the new generation of the X-ray optics
Výskum technológie nanoobrábania pre aktívne povrchy novej generácie RTG optiky
Program: SRDA
Project leader: RNDr. Majková Eva DrSc.
Annotation:The aim of the proposed project is development of the SPDT and FC nanomachining methods for the preparation of high-quality active surfaces meeting requirements of the latest generation of the X-ray crystal optics. The methods developed will be used for preparation of the X-ray optics elements for advanced X-ray metrology and X-ray imaging that will be included into experimental setups and tested in real experiments. We will focus on Si and Ge typical for the X-ray optics. The aim is to achieve the local surface roughness far below 1 nm and deviations from planarity in the nanometer range over the lengths of millimeters at maximum suppression of the sub-surface damage of the crystal lattice.
Duration: 1.7.2015 - 30.6.2018

Development of Scanning Tunneling Microscopy Simulation Tools for Spin Transport
Vývoj prostriedkov na simuláciu transportu spinu v rastrovacej tunelovej mikroskópii
Program: SASPRO
Project leader: Dr. Palotás Krisztián
Duration: 1.1.2016 - 31.12.2018

Development of sensors and measurement methods for transient techniques for the measurement of thermophysical properties of materials and their application for seasonal storage of heat energy
Vývoj senzorov a metód pre prechodové metódy merania termofyzikálnych vlastností látok a ich aplikácia pre možnosti sezónneho uskladnenia tepelnej energie.
Program: VEGA
Project leader: Ing. Boháč Vlastimil CSc.
Annotation:Investigation of thermophysical properties of natural materials with new sensors and methods. Thermal properties of rocks are important at solving the problems of seasonal storage of heat energy in geological formations around the houses. To optimize the process of the energy acumulation it is necessary to know the thermo-physical properties of the surrounding material in which the energy is stored. We must know the values of coefficient of thermal diffusivity, thermal conductivity and specific heat capacity for the numerical simulation of heat transport phenomena for the transfer from the heat exchanger into the bedrock materials (eg. Limestone and clay loam). In the frame of project there will be designed and manufactured single-probe thermo-physical sensors and their modifications for in-situ measurements. The new sensors will be placed in the ground in the hole bored in different geological conditions, so clay loam and rock massif. For the new single-probe sensors there will be derived the new models.
Duration: 1.1.2017 - 31.12.2019

Relations between electronic structure and microstructure of copolymer thin films
Vzťahy medzi elektrónovou štruktúrou a mikroštruktúrou tenkých kopolymérnych vrstiev
Program: VEGA
Project leader: RNDr. Gmucová Katarína CSc.
Annotation:The efficiency of sunlight conversion to electricity relies, among other things, on the charge separation after the photovoltaic process initiation by the absorption of a photon which generates an exciton. The presence of a donor-acceptor interface in the thin films confines the electron and hole in their respective layers and facilitate thus the charge separation. In past years, the synthesis of novel all-conjugated copolymers bringing together hole- and electron-conductive polymers turned up to be of utmost importance. The relations between microstructure and electrical properties of such copolymers are far from being clearly understood. This originates from the presence of both the ordered (polycrystalline) and disordered (amorphous) phases in the solution-processed thin films. This project proposal is focused on the explanation of the relations between the microstructure of copolymer thin films and the structural defect-related DOS, which markedly influences the functionality of solar cells.
Duration: 1.1.2017 - 31.12.2020

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Zákonitosti tvorby a termodynamická stabilita štruktúrne komplexných fáz v zliatinách na báze hliníka alebo zinku
Program: VEGA
Project leader: Ing Švec Jr. Peter PhD.
Duration: 1.1.2015 - 31.12.2018

The total number of projects: 34