Open Access Conference Proceedings

Abstract: Surface integrity plays a key role in the surface modifications and coating processes that provide high and long-term performance of the treated components. Argon ion bombardment is widely used in many surface modification processes and for surface pre-treatment. [..] Read more

Abstract: This paper presents the results of surface modification of polymers induced by atmospheric pressure non-isothermal plasma generated in reducing atmosphere. The technology based on diffuse coplanar surface barrier discharge (DCSBD) was used with the aim to achieve highly hydrophobic surfaces. [..] Read more

Abstract: Nanocomposite system formed by poly(vinyl acetate) (PVAc) matrix and halloysite nanotubes (HNT) filler was prepared in three different ways. The first method was kneading the composite melt in laboratory kneader. [..] Read more

Abstract: Application potential of colloidal particles and nanoparticles is related to their size, shape and other physical and chemical properties. Those properties can be influenced by various ways of synthesis, while the presence of reducing agent and modifiers (polymers, surfactants) are the most vital ones. [..] Read more

Abstract: Aluminium oxide nanopowder is used for sintering into ceramic materials with attractive mechanical properties. The simplest and most common sintering methods are wet methods during which the nanopowder is dispersed in a liquid. [..] Read more

Abstract: Two Prussian blue (PB) samples with different morphologies (spheres, mean size 160 nm; cubes, mean size 1.48 μm) and variable content of potassium (K-free and K-bearing) were used as a precursor material for the preparation of iron(III) oxides by solid state thermal decomposition method. A mixture of iron(III) oxide polymorphs (α-Fe2O3, β-Fe2O3, and γ-Fe2O3 nanoparticles) or pure maghemite (γ-Fe2O3 nanoparticles) were obtained by thermal decomposition of the cubic (K-bearing) or spherical (K-free) PB particles, respectively, at 350 °C in air. [..] Read more

Abstract: This work deals with the preparation of platinum nanoparticles using ionizing radiation - accelerated electrons with energy 4.5 MeV produced by linear accelerator Linac-4-1200 Tesla VT Mikroel. Aqueous solutions of platinum chloride with Triton X-100 as a reducing and stabilizing agent were used. [..] Read more

Abstract: The paper describes the preparation and identification of hybrid compounds based on graphene oxide, graphene oxide - fullerene C60, graphene oxide CFx, graphene oxide-biochar and graphene oxide-MWCNT.Chemical modification procedures of the foils and its compounds with nanoparticles of metals (oxides) are further described. In conclusion, alternative applications of hybrid foils and synthesized compounds are proposed.. [..] Read more

Abstract: An ordered array of silver (Ag) nanoparticles (NPs) on the uniaxial LiNbO3 material is theoretically analyzed under an extended Maxwell-Garnett (M-G) effective approximation to account on the anisotropic effects. Structural parameters such as NPs radius and interparticle distances in the array play a key-role in the evaluation of the dielectric response in both parallel and perpendicular directions. [..] Read more

Abstract: Gas aggregation cluster sources (GAS) represent one of the most rapidly developing systems for synthesis of nanoparticles (NPs). Such sources were used for the production of NPs from different materials ranging from metals or metal oxides to organic compounds. [..] Read more

Abstract: Nano iron oxides have been intensively investigated due to their various potential biomedical applications. ε-Fe2O3phase exerted internal coercivity value up to ~20 kOe, high Curie temperature (Tc= 510 K), and magnetoelectric character. [..] Read more

Abstract: Graphene is a material of great potential in a broad range of applications, for each of which specific tuning of the material’s properties is required. This can be achieved, for example, by covalent functionalization. [..] Read more

Abstract: The optical setup based on the double grating monochromator equipped with fiber coupled LEDs and the photomultiplier has been optimized for the photoluminescence spectroscopy of the highly scattering thin films in the spectral range 300−750 nm. The photoluminescence study has been applied on the hydrogen and oxygen plasma treated, nominally undoped (intrinsic) ZnO aligned nanocolumns grown by hydrothermal process. [..] Read more

Abstract: Polyacrylonitrile (PAN) is commonly used as a raw material for making carbon fibers. This work is about dissolving waste acrylic fibers in suitable solvent to make thick acrylic solution. [..] Read more

Abstract: Hafnium oxide (HfO2) is a high-temperature ceramic with excellent electrical, dielectric and optical properties, which may be substantially enhanced in the nanostructured material. Here, we have developed self-organized arrays of hafnium-oxide nanorods and examined their properties by electrochemical impedance spectroscopy (EIS). [..] Read more

Abstract: It is well-known that a type of used fumed silica nanoparticles plays a dominant role in wettability of the corresponding nanofibrous mats. As a result, the desired contact angle can be approximately achieved by a choice of adequate fumed silica nanoparticles. [..] Read more

Abstract: Perovskite-type structures with mixed oxygen-ionic and electronic conductivity, high activity and stability are used as catalysts for high temperature processes such as synthesis gas production and ethylene and propylene subsequent synthesis. The nanostructured perovskite-type oxides GdFe1-xMnxO3 (x = 0, 0.01, 0.05, 0.2, 0.5, 0.8 and 1) were synthesized by ceramic and sol-gel technologies and were studied as catalysts for dry reforming of methane and the CO hydrogenation. [..] Read more

Abstract: The short carbon fibers reinforced cementitious matrix composites were prepared. The mechanical properties of the materials were investigated. [..] Read more

Abstract: Cerium oxide nanoparticles were prepared by the hydrothermal method. Simultaneous measurements of the bovine serum albumin adsorption and zeta potential determination of the (adsorption) suspensions were carried out. [..] Read more

Abstract: The antibacterial effect of thin films TiO2:SiO2:Ag on two Gram-negative bacteria Escherichia coli and Pseudomonas putida was investigated. The thin films were deposited on glass substrates without heating by r.f. [..] Read more