7–10 Sept 2020
Europe/Zurich timezone
20. konference českých a slovenských fyziků

Session

Parallel sessions

8 Sept 2020, 13:30

Presentation materials

There are no materials yet.

  1. D’Agata G.F. (Nuclear Physics Institute of the Czech Academy of Sciences, Řež)
    08/09/2020, 13:30
    Oral

    It is widely known that nucleosynthesis takes place into stars. Element lighter than
    Iron and heavier than Lithium (partially produced in primordial nucleosynthesis) are
    in fact produced during stellar evolution by means of the interaction between
    charged and neutral particles. About charged particles its interactions is strongly
    hampered by the presence of the Coulomb barrier – usually...

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  2. Kireš M. (Ústav fyzikálnych vied Prírodovedecká fakulta UPJŠ v Košiciach)
    08/09/2020, 13:30
    Oral

    Abstrakt: Vzdelávanie je procesom sprístupňovania nadobudnutých poznatkov a overených
    postupov z vybranej oblasti ľudskej činnosti, ponúkajúcim využívanie a nadväznosť na
    existujúcu úroveň vedy, techniky či spoločenských zvyklostí. Kvalitným vzdelávaním nie iba
    informujeme o minulosti, ale najmä iniciujeme smerom k budúcnosti. Fyzika, ako veda, má
    obrovský vzdelávací potenciál z pohľadu...

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  3. Šimečková E. (NPI CAS, Řež)
    08/09/2020, 13:50
    Oral

    Knowledge of experimental activation cross sections is important for creation and evaluation
    of evaluated libraries (TENDL) used by various programs for design accelerators, their
    components, reactors, but also for nuclear structure study. The proton and deuteron activation
    cross sections have been studied at NPI CAS (Nuclear Physics Institute) for many years at
    variable energy cyclotron...

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  4. Choma M. (Faculty of Humanities and Natural Sciences, Prešov University, Prešov)
    08/09/2020, 14:05
    Oral

    Zvyšovanie výpočtového výkonu počítačových komponentov, ktoré je sprevádzané
    znižovaním ich cien je predpokladom vzniku nových progresívnych oblastí, ktoré postupne
    získavajú na popularite, vďaka čomu získavajú masový rozmer. Tieto nové technológie rýchlo
    prenikajú do rôznych oblastí nášho života a školstvo nie je výnimkou. V čase, keď väčšina
    žiakov vlastní digitálne zariadenie sa...

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  5. Koliadko D. (Nuclear Physics Institute of the Czech Academy of Sciences, Řež)
    08/09/2020, 14:10
    Oral

    Precise nuclear data are of great importance in the design of fusion and ADS devices. The
    studies of prompt and delayed gamma rays from (n,g*) reactions bring important knowledge
    as it is one of the main sources of nuclear data such as cross-section, nuclear energy levels,
    etc.
    A central part of the capability is the Cyclotron U-120 and neutron converter coupled to the
    collimator. The...

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  6. Kováč M. (Fakulta didaktiky matematiky, fyziky a informatiky, Univerzita Komenského v Bratislave)
    08/09/2020, 14:25
    Oral

    Cieľom príspevku je ponúknuť učiteľom fyziky spôsob ako rozvinúť žiacke predstavy
    o tlaku v kvapalinách, o jeho príčine a dôsledkoch. Zaoberáme sa preto chápaním pojmov
    tiaž, tiažová sila, gravitačná sila. Venujeme sa tiež pokusu s kvapalinou v beztiažovom stave,
    kedy na telesá ponorené v kvapaline nepôsobí vztlaková sila. V príspevku navrhujeme
    experiment zameraný na overenie lineárnej...

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  7. Ansorge M. (Nuclear Physics Institute of the Czech Academy of, Řež)
    08/09/2020, 14:30
    Oral

    At the Nuclear Physics Institute at the laboratory of Fast Neutron Generators, a new neutron
    collimator was recently constructed. Simultaneously a new neutron converter coupled to the
    collimator was constructed and successfully tested last year. Collimated beams of fast
    neutrons bringing new experimental possibilities especially for on-beam measurements with
    semiconductor detectors....

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  8. Kácovský P. (Katedra didaktiky fyziky MFF UK, Praha, Česká republika)
    08/09/2020, 14:45
    Oral

    Experiment je základním prvkem nejen ve fyzice jako vědě, ale také ve výuce fyziky. Ačkoliv
    je v poslední době více výzkumné pozornosti věnováno samostatnému experimentování žáků
    v rámci badatelské výuky, významnou roli stále ve školách hraje demonstrační experiment.
    Na katedře didaktiky fyziky MFF UK má projekt předvádění demonstračních experimentů pro
    studenty středních škol tradici více...

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  9. Cassisa A. (Nuclear Physics Institute of the Czech Academy of Sciences, Řež)
    08/09/2020, 14:50
    Oral

    It is well known that the radioctive decay can be influenced from external environment [1][2].
    However we still don't have a univocal picture that describes these effects. Understanding
    how the radioctive decay is influenced in high density environments is useful for different
    fields like, for example, the relevant fusion processes in stellar environment [3] or for isotope-
    cycling and...

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  10. Houfková J. (Katedra didaktiky fyziky MFF UK, Praha)
    08/09/2020, 15:40
    Oral

    Co zajímá nejmenší "fyziky" z mateřských škol a prvního stupně základních škol, co se jim
    líbí a co všechno dokáží, a co na to jejich učitelé? Co vše lze prostřednictvím jednoduchých
    fyzikálních pokusů u dětí rozvíjet? Jak fyzika pomáhá spolupráci učitelů z různých typů škol?
    Při odpovídání na předchozí otázky vychází autorka ze své mnohaleté zkušenosti se
    zprostředkováváním...

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  11. Mihalik M. (Institute of Experimental Physics, Slovak Academy of Sciences, Košice)
    08/09/2020, 15:40
    Oral

    The transition metal oxides, with perovskite structure, have been largely studied because these
    materials exhibit strong coupling between orbital, electronic, spin and lattice degrees of
    freedom. The atomic substitution at the dodecahedral sites in stoichiometric compounds has
    been extensively studied and recently, interest has turned on to the effect of the substitution at
    the octahedral...

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  12. Krajčová V. (Smíchovská střední průmyslová škola, Praha)
    08/09/2020, 16:00
    Oral

    Smíchovská střední průmyslová škola se dlouhodobě snaží o zavádění nových forem výuky,
    se kterými souvisí také snaha o status otevřené instituce přístupné všem generacím. Centrem
    všeho dění jsou samozřejmě studenti školy, kteří mají možnost se všeobecně rozvíjet, a to
    nejen klasicky v hodinách, ale i jako asistenti či vedoucí workshopů pro mateřské a základní
    školy a od roku 2015 také pro...

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  13. Džubinská (CPM-TIP, UPJS, 040 11 Košice)
    08/09/2020, 16:15
    Oral

    The study of intermetallic compounds has a long history. Rare earth intermetallic
    compounds are systematically investigated more than 3 decades already. Polycrystalline
    samples (Ce,Gd,Yb)Ni 5 were prepared by different ways, where interesting physical problems
    were studied.
    In this work we focused on competition between the effect of spin fluctuations and the
    possible existence of quantum...

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  14. Beňuška J.
    08/09/2020, 16:20
    Oral

    Vyučovací proces, nielen predmetu fyzika, má svoje viac či menej zaužívané pravidlá.
    Zvyčajne sa ich adepti na učiteľstvo dozvedajú na pri štúdiu na vysokej škole. V tomto
    príspevku chceme odpovedať na niekoľko otázok a podať informácie, ktoré sa možno pri
    štúdiu nedozvedia. Napríklad:
    Je vyučovanie fyziky iné oproti iným predmetom? Ako sa mení úloha učiteľa fyziky
    v posledných rokoch? Sú...

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  15. Kadlec Ch. (1 Institute of Physics, Czech Academy of Sciences, Na Slovance 2, Prague)
    08/09/2020, 16:35
    Oral

    Multiferroic materials exhibiting coupled magnetic and electric orderings are intensely
    studied due to an interest in both their fundamental properties and potential applications based
    on the magnetoelectric coupling. In general, magnons are collective spin excitations of
    various types. In multiferroics, the electric component of the electromagnetic radiation can
    excite magnons via the...

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  16. Valenta J.
    08/09/2020, 16:45
  17. Gabáni S. (Institute of Experimental Physics SAS, Košice)
    08/09/2020, 16:55
    Oral

    Geometrically frustrated lattices play an important role in emergent quantum mechanical
    phases, which have been rather well investigated in electronic insulators. A system that
    exhibits both lattice frustration and metallic behaviour are the rare-earth (RE) tetraborides
    REB 4 . They have a tetragonal structure with magnetic RE ions embedded in boron network
    and forming a lattice...

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  18. Košovský D. (Ústav jadrového a fyzikálneho inžinierstva, Slovenská technická univerzita v Bratislave)
    08/09/2020, 17:15
    Oral

    Mikroštruktúra materiálov determinuje aj ich makroskopické fyzikálne vlastnosti. Tie je
    nevyhnutné poznať hlavne v prípade ocelí, ktoré sa používajú ako základný materiál pre
    konštrukčné prvky jadrových zariadení. Ukazuje sa, že chróm v rôznych zliatinách má
    antikorózne vlastnosti kvôli povrchovej segregácii a tvorbe pasivačnej vrstvy. Práve preto sú
    ocele s prímesou chrómu vhodným...

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  19. Heczko O. (Department of Magnetic Measurements and Materials, Institute of Physics CAS, Prague)
    08/09/2020, 17:35
    Oral

    In the past two decades Ni-Mn-Ga Heusler alloys have received great attention as these
    exhibit magnetic shape memory effects, first described in 1999. Modulated Ni 2 MnGa
    martensite has exceptionally low stress for pseudoplastic deformation or structural
    reorientation by twinning mediated by highly mobile twinning boundaries [1]. Owing to large
    magnetic anisotropy and low twinning stress...

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  20. Vaněk J. (Nuclear Physics Institute, Czech Academy of Sciences, Rez)
    09/09/2020, 10:30
    Oral

    At RHIC energies, charm quarks are primarily produced in hard partonic scatterings at early
    stages of ultra-relativistic heavy-ion collisions. This makes them an ideal probe of the Quark-
    Gluon Plasma (QGP) produced in these collisions, since they experience the whole evolution
    of the hot and dense medium. STAR is able to study the interactions of charm quarks with the
    QGP through direct...

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  21. Kekule M. (Katedra didaktiky fyziky, MFF UK, Praha)
    09/09/2020, 10:30
    Oral

    We employed the eye-tracking method (Eyetracker by Tobii, 300 Hz) in order to observe
    students’ strategies of choosing an option when they solved multiple-choice tasks focused on
    graph slope interpretation. Each student solved 7 multiple-choice tasks focused on graphs in
    kinematics. Most tasks were adopted from Beichner’s TUG-K test (Beichner, 1994).
    Particularly, they were focused on...

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  22. Holubová R. (Přírodovědecká fakulta Univerzity Palackého Olomouc)
    09/09/2020, 10:50
    Oral

    Cílem příspěvku je prezentovat výsledky mezinárodního šetření o existenci a obsahu
    překlenovacích kurzů pro absolventy středních škol, kteří nastupují do 1. ročníku studia
    přírodovědných předmětů na vysokých školách. Byli dotazování jak studenti, tak i
    vysokoškolští pedagogové, zda jsou takovéto kurzy na vysokých školách nabízeny, zda
    studenti tyto kurzy navštěvují, popř. zda by byl o...

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  23. Líčeník R. (Nuclear Physics Institute, Czech Academy of Sciences, Řež)
    09/09/2020, 10:50
    Oral

    It has been established that the Quark-Gluon Plasma (QGP), an exotic state
    of deconfined matter, is created in high-energy heavy-ion collisions. Jets are a
    very important probe of this hot and dense nuclear matter, since they emerge
    from the fragmentation of hard-scattered partons (quarks and gluons) that are
    created during the early stages of the collisions. Therefore, measurements...

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  24. Křížek F. (ÚJF AV ČR, Řež)
    09/09/2020, 11:10
    Oral

    QCD jets are modified ("quenched") by their interactions with the quark-gluon plasma (QGP)
    formed in high-energy nuclear collisions. The measurement of jet quenching in small collision
    systems can tell us about the limits of QGP formation and the nature of equilibration in QCD,
    but to date no significant jet quenching has been observed in small systems. In this talk, the
    ALICE...

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  25. Gorčáková S. (Katedra didaktiky matematiky, fyziky a informatiky, FMFI UK, Bratislava)
    09/09/2020, 11:10
    Oral

    Konštruktivistické prístupy, ktoré sa v súčasnosti uplatňujú vo vzdelávaní v podobe
    bádateľsky orientovanej výučby, zdôrazňujú okrem rozvíjania porozumenia aj rozvoj
    zručností a spôsobilostí súvisiacich s činnosťami, ktoré vedú ku konštrukcii poznatkov. Počas
    prípravy študentov učiteľstva fyziky sa však často stretávame so situáciou, kedy študent
    uprednostňuje vyučovacie stratégie, ktorými...

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  26. Ponimakin G. (Nuclear Physics Institute of the CAS, Rez)
    09/09/2020, 11:30
    Oral

    Jets of collimated particles arising from hard scattered partons have been studied extensively
    in hadron collisions. Jets serve a multitude of purposes as they are utilized in fundamental
    studies of the Standard Model (SM) and in searches for new particles. Recently, studies of jet
    interaction with the quark-gluon plasma (QGP) created in high energy heavy ion collisions are
    of growing...

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  27. Koupilová Z. (Katedra didaktiky fyziky MFF UK, Praha)
    09/09/2020, 11:30

    V poslední době se i ve vysokoškolské výuce, zejména v úvodních kurzech během prvních let
    studia, objevuje posun od tradičně pojaté výuky k aktivizujícím výukovým formám. Jejich
    prostřednictvím se prohlubuje konceptuální pochopení základních myšlenek, které se tak
    vzájemně doplňuje s řemeslným zvládnutím konkrétních technik řešení úloh typických pro
    dané fyzikální téma. Výzkumy prováděné...

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  28. Kosarzewski L. (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)
    09/09/2020, 11:50
    Oral

    Heavy-ion collisions allow to recreate conditions present in the universe shortly after the Big
    Bang when the quark-gluon plasma can be formed. The properties of such plasma can be
    studied using Upsilon mesons. Each of Upsilon states is expected to dissociate at a different
    temperature reached in the plasma, through Debye-like screening of color charges. Thus, their
    production yields are...

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  29. Skopalík J. (Dept. of Biomedical Engineering, Faculty of Electrical Engineering and Communication, University of Technology, Brno)
    09/09/2020, 11:50
    Oral

    Lab rats and rabbits are irrepleceable models for study of the ortopedic pathologies.
    Traditional analysis of these pathologies is based on postmortem histological analysis or X-
    ray or invasive sampling, however modern monitoring of orthopedic pathology and
    regeneration needs the smart and noninvasive methods for quantification of the motility of
    the limbs and organism. Advances in...

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  30. Ješková Z. (Prírodovedecká fakulta UPJŠ, Košice)
    09/09/2020, 13:30
    Oral

    V súčasnosti častokrát skloňované problémy s prírodovedným vzdelávaním sú v centre
    pozornosti národného projektu IT Akadémia, ktorého hlavným cieľom je vytvorenie modelu
    vzdelávania pre aktuálne a perspektívne potreby vedomostnej spoločnosti a trhu práce so
    zameraním na informatiku a digitálne technológie. V rámci príspevku predstavíme dva
    kľúčové ciele projektu: inovácia vzdelávania...

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  31. Füzer J. (Ústav fyzikálnych vied, Prírodovedecká fakulta, Univerzita P. J. Šafárika, Košice)
    09/09/2020, 13:30
    Oral

    Nepretržitý pokrok v oblasti magneticky mäkkých materiálov prináša nové možnosti ich
    využitia v modernej elektrotechnike a elektronike. Cieľom hľadania progresívnych materiálov
    je snaha o zníženie ekonomických nákladov na ich výrobu a prevádzku z nich zhotovených
    výrobkov v priemyselných aplikáciách. Magneticky mäkké kompozity (MMK) vyrobené
    práškovou metalurgiou otvárajú nové možnosti pri...

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  32. Kľučarová A. (Katedra fyziky, matematiky a techniky, Fakulta humanitných a prírodných vied, Prešovská univerzita v Prešove)
    09/09/2020, 13:50
    Oral

    Predkladaný príspevok je venovaný pedagogicko-psychologickej téme záujmu, ako jedného
    z významných činiteľov zohrávajúcich dôležitú úlohu v procese samostatného žiackeho
    bádania a učenia sa. Autori príspevku sústreďujú svoju pozornosť na záujem žiakov o
    predmet školskej fyziky. Dôraz pritom kladú na poznávací záujem. Hlavným cieľom
    príspevku je zistiť prítomnosť poznávacieho záujmu...

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  33. Valenta J. (katedra chemické fyziky a optiky, Matematicko-fyzikální fakulta, Univerzita Karlova, Praha)
    09/09/2020, 14:05
    Oral

    The low-temperature electron-hole plasma may undergo phase transition to the liquid state:
    the electron-hole liquid (EHL). The transition is allowed in dense plasma below critical
    temperature T C and it exists only in the thermodynamic limit, i.e. when the lifetime of the
    electron-hole system is long enough to reach the thermal equilibrium. For that reason, the
    macroscopic and relatively...

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  34. Kiss T. (Oddelenie didaktiky fyziky, Fakulta matematiky, fyziky a informatiky,Univerzita Komenského, Bratislava)
    09/09/2020, 14:10
    Oral

    Človek je spoločenská bytosť a integrálnou súčasťou spoločenského života je aj komunikácia.
    Pri komunikácií musíme často zdôvodňovať svoje tvrdenia, presviedčať iných o ich
    pravdivosti – argumentovať. Schopnosť argumentovať však nie je schopnosť, ktorá je človeku
    daná pri narodení. Je však možné ju rozvíjať a zlepšovať napríklad tým, že žiaci počas hodín
    vyjadrujú svoje názory pri riešení...

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  35. Čevajka J. (Fakulta Matematiky, Fyziky a Informatiky, Univerzita Komenského v Bratislave)
    09/09/2020, 14:30
    Oral

    Hodnotenie, ako súčasť výchovno-vzdelávacieho procesu, je v poslednej dobe značne
    diskutovanou témou medzi odborníkmi v didaktike, učiteľmi, žiakmi, rodičmi ale i v celej
    spoločnosti. Diskutovanou témou je najmä úloha hodnotenia, jeho funkcie a postavenie vo
    výchovno-vzdelávacom procese. Taktiež sa vedú úvahy, či je hodnotenie v podobe, akej sa
    realizuje, objektívne a naozaj posudzuje...

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  36. Oswald J. (Institute of Physics CAS, v.v.i., Prague)
    09/09/2020, 14:45
    Oral

    Nitride semiconductor heterostructures are widely used for light-emitting, high-power and
    high-frequency applications. But InGaN/GaN multiple quantum well (QW) structures are also
    potential candidates for scintillation detectors. This application needs completely different
    design of the heterostructure in comparison with LED one. It opens new problems that have
    not been solved yet. Main...

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  37. Kolář P. (Matematicko-fyzikální fakulta, Univerzita Karlova, Praha)
    09/09/2020, 14:50
    Oral

    Cílem výzkumu, o jehož části pojednává tento příspěvek, je zjistit představy zainteresovaných
    aktérů o fyzikálním kurikulu. Mezi tyto aktéry patří mimo jiné fyzikové–vědci, další
    přírodovědci, didaktikové fyziky a učitelé fyziky. Na základě sběru a analýzy jejich představ
    budou formulovány podněty k proměně současného kurikula fyziky pro základní a střední
    školy.
    Cílem příspěvku je...

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  38. Pavelka O. (Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Prague)
    10/09/2020, 08:30
    Oral

    One of the fundamental features of nanotechnology is that properties of a certain material can
    be changed just by varying its shape and size. This exactly is the case for the two types of
    gold nanostructures in our study, where luminescent gold nanoclusters (AuNCs) benefit from
    the presence of plasmonic gold nanorods (AuNRs). Despite the limited number of atoms,
    AuNRs with characteristic...

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  39. Smrž M. (Institute of Physics, Czech Academy of Sciences, Prague,)
    10/09/2020, 08:30
    Oral

    Laserové systémy prošly od svého objevení v roce 1960 dlouhou cestu a v posledních letech
    se stávají stále častěji běžně využívaným pracovním nástrojem. Centrum HiLASE
    Fyzikálního ústavu se od svého vzniku zaměřuje na vývoj špičkových, zejmna pulsních,
    diodově buzených pevnolátkových laserů pro moderní průmyslové aplikace. Takové lasery
    s vysokou účinností, středním výkonem až 1 kW a dobou...

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  40. Kúdelčík J. (Katedra fyziky, Fakulta elektrotechniky a informačných technológií, Žilinská univerzita V Žiline)
    10/09/2020, 08:50
    Oral

    Štúdium dielektrických parametrov vedie k lepšiemu porozumeniu polarizačných
    a relaxačných javov v nových materiáloch. Táto štúdia je zameraná na mnohostenné
    karbónové nanorúrky funkcionalizované magnetickými nanočasticami. Pomocou dielektrickej
    spektroskopie sa študoval vplyv elektrického poľa na zmeny dielektrických parametrov
    i štruktúrneho usporiadania MWCNT/Fe 3 O 4 . Frekvenčná...

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  41. Kubeš P.
    10/09/2020, 09:05
    Oral

    V plazmovém fokusu je husté a horké plazma vytvářeno kompresí proudu procházejícího plazmatem
    vlastním magnetickým polem. Prezentované výsledky vedoucí v deuteriové náplni k fúzní DD reakci
    byly prováděny v IPPLM ve Varšavě na aparatuře PF-1000, která dosahuje°neutronový zisk 10 11 A při
    proudu 1 – 2 MA. Na aparatuře je využívána komlexní rentgenová, laserová, částicová a...

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  42. Hulicius E. (Institute of Physics, Czech Academy of Sciences, Prague)
    10/09/2020, 09:10
    Oral

    This paper focuses on quantum dots (QDs) embedded inside semiconductor heterostructures
    prepared by Metalorganic Vapor Phase Epitaxy (MOVPE) technology and is based on our
    contribution in [1].
    Light emission from atoms/molecules in a glass matrix or in gas is strongly monochromatic.
    Semiconductor direct-bandgap materials have much higher energy conversion efficiency than
    the other light...

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  43. Brotánková J. (FJFI ČVUT v Praze)
    10/09/2020, 09:25
    Oral

    The contribution focuses on a new plasma laboratory, currently in commissioning phase. Its
    aim is to provide doctoral and undergraduate students as well as non-fusion experts with
    hands-on experience and support for their experimental research relevant to modern fusion
    technology. The laboratory consists of four main sections: Electric and magnetic fields,
    Plasma, Optics, and the GOLEM...

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  44. Hulman M. ( Institute of Electrical Engineering, SAS, Bratislava)
    10/09/2020, 09:30
    Oral

    Thin MoS 2 layers grown by sulfurisation of Mo films can be aligned horizontally or vertically
    depending on the initial Mo thickness. So far, the vertical alignment of MoS 2 layers has been
    detected by TEM measurements. However, TEM provides information only from a very
    limited area of the sample and requires time consuming and laborious sample preparation.
    Alternatively, grazing incidence...

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  45. Duda D. (Faculty of Mechanical Engineering, University of West Bohemia in Pilsen)
    10/09/2020, 09:45
    Oral

    Turbulence is one of the most fascinating phenomena in nature existing from Ångström
    length-scales (quantized vortices in superfluid helium [La Mantia et al. 2016]) up to galactic
    scales [Vatistas 2010]. One of the main features of turbulence is the presence of interacting
    vortices of various strengths sizes and orientations. But the present description of turbulence
    is based on...

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  46. Fučíková A. (Department of Chemical Physics and Optics, Faculty of Mathematics and Physics, Charles University, Prague)
    10/09/2020, 09:50
    Oral

    The physical and chemical properties of materials tested on the macro- or nano-scale may
    differ dramatically. For example, when measuring the Young's modulus of elasticity, we
    assume an “infinite” depth of material, which is not fulfilled especially when the Young’s
    modulus is measured at the nano-scale. Another example, the interaction of nanomaterials
    with biological environment and...

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  47. Jelínek P. (Institute of Physics of Czech Academy of Sciences, Prague)
    10/09/2020, 10:30
    Oral

    Low dimensional materials offer very interesting material and physical properties due to
    reduced dimensionality. At present, 2D materials are the focus of attention. However, 1D
    systems often show far more exotic features, such as Tomanaga-Luttinger liquid, Peierls
    distortion, etc.. In this talk, we will present -conjugated molecular chains of distinct
    topological classes formed on...

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  48. Gmucová K. (Fyzikálny ústav SAV, Bratislava)
    10/09/2020, 10:30
    Oral

    V posledných rokoch vzrástol význam syntézy konjugovaných kopolymérov spájajúcich v
    jednej molekule rôzne monoméry. Takéto materiály nachádzajú široké uplatnenie v
    mikroelektronike aj vo fotovoltike, keďže ich cielaná syntéza umožňuje nielen vhodné
    nastavenie šírky zakázaného pásu, ale aj zvýšenie účinnosti konverzie slnečného žiarenia na
    elektrickú energiu spojením monomérov s dierovou a...

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  49. Reiffers M. (Faculty of Humanities and Natural Sciences, Prešov University, Prešov,)
    10/09/2020, 10:50
    Oral

    The new polycrystalline intermetallic compound Gd 3 Ni 2 In 4 has been prepared. We have
    investigated the structural, magnetic, magnetocaloric, thermodynamic and transport
    properties. X-ray powder diffraction pattern displays that Gd 3 Ni 2 In 4 crystallizes in hexagonal
    Lu 3 Co 2 In 4 – type of crystal structure. The presence of two magnetic transitions,
    antiferromagnetic T N = 21 K and...

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  50. Človečko M. (Centre of low temperature physics, Institute of Experimental Physics SAS, Košice)
    10/09/2020, 11:05
    Oral

    We present unusual properties of the commercial quartz tuning forks (QTFs) operating at
    resonance frequencies of 32 kHz, 77 kHz and 100 kHz at temperature range below 1K and in
    high magnetic fields up to 7.5 T. We show that in millikelvin temperature range, the quartz
    tuning forks exhibit the property of the coherent oscillations. These are manifested as a
    temperature-dependent, extremely...

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  51. Stejskal O. (Faculty of Mathematics and Physics, Charles University, Prague)
    10/09/2020, 11:10
    Oral

    We present analysis of microscopic origin of magneto-optical spectra from the electronic
    structure of bcc Fe. The magneto-optical (MO) permittivity spectra are obtained by the
    WIEN2k code and compared to the corresponding experimental MO Kerr effect spectra. The
    ab-initio spectra are given by the Kubo formula, i.e., as a result of summation over all pairs of
    electronic bands and...

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  52. Dittrich J. (Nuclear Physics Institute CAS, Řež,)
    10/09/2020, 11:25
    Oral

    Simple examples that the direction of the momentum, defined by its spectral support in a
    given state, and the direction of the probability flux may be locally uncorrelated in 1+1
    dimensional space-time are given for the Schrödinger and the Dirac particle with non-zero
    mass. For the zero-mass Dirac particle, they are always correlated.


    Jednoduché příklady ukazují, že směr...

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  53. Kaštil J. ( Institute of Physics ASCR, Prague)
    10/09/2020, 11:30
    Oral

    The Ni 1.92 Mn 1.56 Sn 0.52 belongs to a family of Heusler alloys with peculiar magnetic, structural
    and transport properties that can be potentially useful for applications. They show structural
    transition from high temperature cubic austenite (A) to low temperature orthorhombic
    martensite (M) with significant changes of volume, magnetization, resistivity and Hall effect.
    We have...

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  54. Křelina M. (FNSPE, Czech Technical University in Prague)
    10/09/2020, 11:45
    Oral

    The future experimental facility EIC (Electron-Ion Collider) that will be built in Brookhaven
    National Laboratory in the USA introduces new opportunities for precise study in high energy
    nuclear physics. This contribution is an overview of the author’s research related to this topic.
    Particularly, in this contribution, we focus on topics as nuclear shadowing, quarkonia wave
    function study,...

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  55. Iľkovič S. (Faculty of Humanities and Natural Sciences, Prešov)
    10/09/2020, 11:50
    Oral

    We report that this alloy has been formed in three phases Dy 5 Si 3 , Dy 3 Co 2.2 Si 1.8 , and Dy 3 Co with
    four successive magnetic transitions. The important role in the magnetic behavior plays
    competing ferromagnetic and antiferromagnetic interactions in the alloy. The number of
    successive magnetic transitions together with competing magnetic interactions exhibit
    broadened...

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  56. Dominec F. (Institute of Physics CAS, Prague)
    10/09/2020, 13:30
    Oral

    With an aim of promoting open-source software and text files for data storage and processing,
    the author presents a program [1] that attempts to resolve the less-than ideal situation in this
    field.
    The usual approach is to either load the data into a point-and-click application for scientific
    plotting, or learn basics of programming and type the commands in a scientific math...

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  57. Trzeciak B. (Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague)
    10/09/2020, 13:30
    Oral

    Extraction of the multi-TeV proton and lead LHC beams with a bent crystal or by using an
    internal gas target allows one to perform the most energetic fixed-target experiment ever. pp,
    and pA collisions at collision energy of 115 GeV and Pbp and PbA collisions at 72 GeV can
    be studied with high precision and modern techniques over a broad rapidity range. Using the
    LHCb and ALICE detectors...

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  58. Hájek F. (Institute of Physics CAS, v.v.i., Prague)
    10/09/2020, 13:50
    Oral

    Development of a new material with required properties is a very complex task. Theoretical
    models for growth procedure are usually not available, at least at the beginning. Therefore,
    many attempts are made to achieve required properties of the material and many
    characterization datasets are obtained. However, the way how the physical properties of the
    material are affected by the growth...

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  59. Chudoba J.
    10/09/2020, 13:50
    Oral

    Experimenty na největším světovém urychlovači LHC v mezinárodní laboratoři CERN
    zaznamenávají velké množství dat ze srážek protonů a těžkých iontů. Tato data jsou ukládána
    ve speciálních formátech a procházejí několika kroky zpracování, než jsou vhodná pro
    fyzikální analýzu. Část zpracovaných dat byla některými experimenty uvolněna pro všechny
    zájemce. Spolu s daty jsou k dispozici...

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  60. Isakov A. (Nuclear Physics Institute of the CAS, Řež)
    10/09/2020, 14:10
    Oral

    The ALICE Inner Tracking System detector is undergoing a major upgrade in order to cope
    with the increased data rates and to meet the requirements as set out by the physics goals of
    the experiment after Long Shutdown 2. The new ITS will be completely made up of ALPIDE
    monolithic active pixel sensors based on a CMOS 180nm process. A single sensor measures
    15mm x 30mm and contains half a...

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  61. Kuldová K. (Institute of Physics CAS, Prague)
    10/09/2020, 14:10
    Oral

    We describe macroscopic defects on InGaN/GaN multiple quantum well structures caused by
    accidental contamination with dust particles during the metalorganic vapour phase epitaxy.
    Gallium nitride and InGaN/GaN heterostructures are promising materials for many
    optoelectronic devices, such as light emitters, high-power and high-frequency electronics,
    detectors of ionizing radiation,...

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  62. Custers J. (Faculty of Mathematics and Physics, Charles University, Prague)
    10/09/2020, 14:30
    Oral

    The properties of the heavy fermion compound Ce 3 PtIn 11 are rather enigmatic. Not only the
    compound possesses two inequivalent Ce-sites but at ambient pressure it exhibits two
    successive antiferromagnetic (AFM) transitions at T 1 = 2.2K and T N = 2K, respectively [1].
    Upon further cooling superconductivity is found with T c = 0.32K. Entropy analysis
    conjectured the idea that the Ce2-ions...

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  63. Kvapil J. (University of Birmingham, UK)
    10/09/2020, 14:30
    Oral

    Charm quarks are mostly produced in hard partonic scattering processes in the early stages of
    a heavy-ion collision, before the quark-gluon plasma (QGP) is formed. Because of their large
    mass the production cross section can be calculated using perturbative quantum
    chromodynamics down to zero transverse momentum. Therefore, they are ideal probes of the
    properties of this hot, dense, and...

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  64. Hospodková A. (Institute of Physics CAS, Prague)
    Oral

    Why are the III-nitride semiconductors so unique that they became the second most important
    semiconductor material after silicon? Why it was so difficult to prepare high quality nitride
    layers? It was so difficult that scientist, which have partly solved this problem were five years
    ago awarded by Nobel Prize. What are the most perspective applications for nitrides? What
    problems have to...

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