A5055332891- Gas Sensing Nanomaterials and Sensors
- Gold and Silver Nanoparticles Synthesis and Applications
- Analytical Chemistry and Sensors
- Quantum Dots Synthesis And Properties
- MXene and MAX Phase Materials
- Advanced Chemical Sensor Technologies
- Advanced biosensing and bioanalysis techniques
- Electrochemical Analysis and Applications
- Iron oxide chemistry and applications
- 2D Materials and Applications
- Conducting polymers and applications
- Nanoplatforms for cancer theranostics
- Essential Oils and Antimicrobial Activity
- Nanocluster Synthesis and Applications
- Graphene research and applications
- Organic Electronics and Photovoltaics
- ZnO doping and properties
- Transition Metal Oxide Nanomaterials
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
- Acoustic Wave Resonator Technologies
- Copper-based nanomaterials and applications
- Magnetism in coordination complexes
- Extracellular vesicles in disease
- Surface Modification and Superhydrophobicity
Institute of Chemistry of the Slovak Academy of Sciences
2011-2024
Slovak Academy of Sciences
2014-2024
Institute of Physics of the Slovak Academy of Sciences
2014-2024
Centre for Advanced Material Application of the Slovak Academy of Sciences
2021-2024
University Hospital Bratislava
2020
Comenius University Bratislava
2020
Czech Academy of Sciences, Institute of Organic Chemistry and Biochemistry
2017
Institute of Materials and Machine Mechanics of the Slovak Academy of Sciences
2015
Polymer Institute of the Slovak Academy of Sciences
2012-2013
Czech Academy of Sciences, Institute of Physics
2013
Fe3O4/γ-Fe2O3 nanoparticles (NPs) based thin films were used as active layers in solid state resistive chemical sensors. NPs synthesized by high temperature solution phase reaction. Sensing NP monolayers (ML) deposited Langmuir-Blodgett (LB) techniques onto chemoresistive transduction platforms. The sensing ML UV treated to remove insulating capping. Sensors surface was characterized scanning electron microscopy (SEM). Systematic gas tests controlled atmosphere carried out toward NO2, CO,...
The surface-enhanced Raman scattering (SERS) properties of low-dimensional semiconducting MXene nanoflakes have been investigated over the last decade. Despite this fact, relationship between surface characteristics and SERSing performance a layer has yet to be comprehensively elucidated. This work shows importance morphology on overall SERS effect by studying few-layer Ti3C2Tx MXene-based substrates fabricated vacuum-assisted filtration (VAF) spray coating filter paper. VAF deposition...
We report on an in-situ observation of the colloidal silver nanoparticle self-assembly into a close-packed monolayer at air/water interface followed by 2D to 3D transition. Using fast tracking GISAXS technique, we were able observe immediate response compression self-assembled layer and identify all relevant intermediate stages including those far from equilibrium. In particular, new nonequilibrium phase before collapse via transition was found that is inaccessible competing direct space...
Unique structure and ability to control the surface termination groups of MXenes make these materials extremely promising for solid lubrication applications. Due challenging delamination process, tribological properties two-dimensional particles have been mostly investigated as additive components in solvents working macrosystem, while understanding nanotribological mono- few-layer is still limited. Here, we investigate double-layer Ti3C2Tx deposited by Langmuir–Schaefer technique on SiO2/Si...
An original diffraction model for the analysis of grazing-incidence small-angle X-ray scattering (GISAXS) from nanoparticle Langmuir films was developed. This relies on concept 2D hexagonal paracrystal and employs distorted-wave Born approximation that is relevant GISAXS measurements at air/water interface when angle incidence close to critical value. The comprises cases close-packed monolayer bilayer with AB-type layer stacking. In this way, both lateral (along interface) vertical (normal...
This study was undertaken to determine the in vitro antifungal activities of super-hydrophobic nanoparticles (SHNPs), essential oils (EOs), and their mixtures (SHNPs/EOs). We have applied a thin layer SHNPs combination with various concentrations three EOs: Arborvitae (Thuja plicata), Oregano (Origanum vulgare L.), Thyme (Thymus vulgaris). The were spread on surface different materials: whitewood, sandstone, paper. protective properties these SHNP EO evaluated. parameter Rr (ratio...
We report on grazing-incidence small-angle x-ray scattering (GISAXS) study of 3D nanoparticle arrays prepared by two different methods from colloidal solutions—layer-by-layer Langmuir–Schaefer deposition and spontaneous self-assembling during the solvent evaporation. GISAXS results are evaluated within distorted wave Born approximation (DWBA) considering multiple effects employing a simplified multilayer model to reduce computing time. In model, particular layers represented chains where...
The Fe 2 O 3 and CoFe 4 nanoparticle-based Langmuir-Blodgett films for sensing of nitric dioxide (NO ) acetone vapours have been explored.Both the sensitivity chemiresistors dynamic properties, such as response/recovery time, probed in dependence number nanoparticle monolayers working temperatures.The response 23 at NO concentration 1 ppm, i.e., approaching canine detection limit, has monitored implying appropriateness nitrate-based explosives.
Two bidentate ligands (L1 = 1-pentyl-2-(pyridin-2-yl)-1
Abstract In continuation of our previous studies on Langmuir nanoparticle films we prepared well‐ordered bilayer film the air–water interface in Langmuir–Blodgett trough. The distance neighboring nanoparticles was adjustable by shortening carbon chain length UV–ozone irradiation. Kinetics reassembly multilayer structure monitored time grazing‐incidence small angle X‐ray scattering (GISAXS) technique. interparticle determined from first lateral peak positions decayed exponentially with...
The ability to control the interparticle distance in self-assembled arrays of nanoparticles plays an important role a large number applications, which require tunable electronic and photonic properties.
Preparation and study of a MoS<sub>2</sub> nanosheet based nanoplatform for cancer detection treatment system equipped with an antibody–antigen recognition element.
Helium inhalation induces cardioprotection against ischemia/reperfusion injury, the cellular mechanism of which remains not fully elucidated. Extracellular vesicles (EVs) are cell-derived, nano-sized membrane play a role in cardioprotective mechanisms, but their function helium conditioning (HeC) has been studied so far. We hypothesized that HeC fibroblast-mediated via EVs. isolated neonatal rat cardiac fibroblasts (NRCFs) and exposed them to glucose deprivation rendered by four cycles 95% +...
Abstract NO 2 and H gas sensing by few-layer graphene (FLG) were studied in dependence on the annealing decoration of palladium nanoparticles (NPs). Graphene was deposited onto SiO (500 nm)/Si substrates a modified Langmuir-Schaefer technique. A solution FLG flakes 1-methyl-2-pyrrolidone obtained mild sonication expanded milled graphite. films characterized atomic force microscopy, X-ray diffraction, Raman spectroscopy, Brunnauer-Emmett-Teller method. Average flake thickness lateral...
Acute myeloid leukemia (AML) is a highly aggressive type of cancer caused by the uncontrolled proliferation undifferentiated myeloblasts, affecting bone marrow and blood. Systemic chemotherapy considered primary treatment strategy; unfortunately, healthy cells are also affected to large extent, leading severe side effects this treatment. Targeted drug therapies becoming increasingly popular in modern medicine, as they bypass normal tissues cells. Two-dimensional MoS2-based nanomaterials have...