The Ionized Jet Deposition (IJD) method is classified as a pulsed electron deposition (PED) method. IJD uses several physical processes to function. In this presentation, these processes will be presented together with the deposition parameters. Deposition parameters are quantities that influence the prepared thin layers.
Příprava tenkých vrstev vysokoteplotních supravodičů typu REBCO na monokrystalických substrátech metodou IJD
Plasmonic nanostructures with characteristic dimensions in the nanometer range exhibit behavior different from classical predictions due to nonlocal response. In our contribution, we focus on the nonlocal interaction of fundamental structures, such as metallic spherical particles, thin metallic layer, and bilayer.
The anomalous Nernst effect (ANE) is a member of the extensive family of topological effects in solid state physics. It converts a heat current into electric voltage and originates from the Berry curvature of electronic bands near the Fermi level. Recent results established the Fe3Ga alloy as one of the most promising candidates for applications, due to its flat band structure consisting of a...
The quasiparticle self-consistent GW method is an advanced ab-initio method for electronic structure calculations. A short explanation and a basic understanding of this method will be presented, with an example of an application and comparison with DFT calculations for Heusler alloys Ni$_2$MnX (Al, Ga, In). One of the electronic structure properties calculated is generalized...
**Photo-active liquid crystalline (LC) materials attract considerable attention as they give an exciting possibility to drive, tune and control the optical properties of soft systems in a contactless way. To contribute to better understanding of the effect of lateral substitution on the self-assembling behaviour, several new materials with lateral substituents are studied. These materials can...
A novel approach to optimize power output from a complex laser system is presented. The proposed method employs the formalism of second-order coherence theory and is applied to power characterization. It addresses the optimization of power output for non-uniformly and completely polarized beams by selecting suitable input and output ideal elliptical polarizers. The method is demonstrated...
Resonant ultrasound spectroscopy (RUS) was employed to determine the elastic properties of commercially pure Ti grade 2 that was processed by room-temperature equal channel angular pressing (ECAP). The accumulated severe plastic deformation during the ECAP processing lead to an ultra-fined grained material with a strong texture, which persisted even after annealing at various temperatures. The...
As High entropy alloys (HEAs) are usually called equimolar metallic alloys composed of five or more elements, typically of similar atomic radius, forming a randomly distributed tough solution crystallizing in face centered cubic (FCC) or body centered cubic (BCC) crystalline lattice. Energetically, from the point of its Gibbs free energy of mixing, the solution is stabilized by the entropic...
The lecture will summarize the advantages of using resonant ultrasound spectroscopy for ferroelastic alloys. Three recently studied cases will be discussed: i) single crystals of ferromagnetic shape memory alloys in which the instability-induced softening couples with magnetoelasticity; ii) the effective response of fine regular laminates in tetragonal martensitic lattices; iii) modulated...
V posledních třech desetiletích je chemie sloučenin boru jednou z nejrychleji se rozvíjejících oblastí chemie nekovů. V rámci příspěvku budou prezentovány struktury vybraných sloučenin BnHm klastrů a jejich derivátů s uhlíkem (karborany). Budou představeny také kovové nanoklastry stabilizované pomocí výše zmíněných klecových systémů, což představuje novou třídu nanomateriálů.
The research investigates the crystalline structures of the shells from four distinct species. By employing advanced X-ray and neutron diffraction techniques, the study delves into the preferred orientation of these shells, shedding light on their internal composition and arrangement. The findings are anticipated to contribute to our understanding of the species' adaptations and ecological...
The silicon vacancy (SiV) colour center in diamond is an optically active crystallographic point defect. Narrow band light emission of SiV centers makes them desirable in various fields such as quantum optics. In this work, we study SiV centers in polycrystalline diamond by using time-resolved low temperature photoluminescence (PL) spectroscopy. We investigate the spectral position, width and...
This contribution is devoted to the identification of bacterial pathogens by Raman spectroscopy with special reference to mixed infections. The advantages but also the current limitations of the method will be discussed.