A5078015665- Magnetic properties of thin films
- Magnetic Properties and Applications
- Magnetic Properties of Alloys
- Semiconductor materials and devices
- Metallic Glasses and Amorphous Alloys
- Physics of Superconductivity and Magnetism
- Analytical Chemistry and Sensors
- Electrochemical Analysis and Applications
- Electromagnetic wave absorption materials
- Quantum and electron transport phenomena
- Topological Materials and Phenomena
- Dielectric materials and actuators
- Graphene research and applications
- ZnO doping and properties
- Advanced Sensor and Energy Harvesting Materials
- Gas Sensing Nanomaterials and Sensors
- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Magnetic and transport properties of perovskites and related materials
- Advancements in Semiconductor Devices and Circuit Design
- Advanced ceramic materials synthesis
- Polymer Nanocomposites and Properties
- Advanced Condensed Matter Physics
- Magnetic Properties and Synthesis of Ferrites
- Copper Interconnects and Reliability
National Centre of Scientific Research "Demokritos"
2014-2023
Helmholtz-Zentrum Dresden-Rossendorf
2022
Iowa State University
2020
University of Patras
2007-2008
Institute of Nuclear and Particle Physics
2008
Thin 2D Mo2C/graphene vertical heterostructures have attracted significant attention due to their potential application as electrodes in the hydrogen evolution reaction (HER) and energy storage. A common drawback chemical vapor deposition synthesis of these structures is demand for high temperature growth, which should be higher than melting metal catalyst. The most metallic catalyst Cu, has a 1084 °C. Here, we report growth thin, ∼200 nm thickness, semitransparent micrometer-sized Mo2C...
Self-organized porous TiO(2) nanotubes (NTs) were prepared on conductive glass by galvanostatic anodizing of sputtered titanium in an NH(4)F /glycerol electrolyte. DC magnetron sputtering at elevated substrate temperature (500 degrees C) was used to deposit 650 nm thick films. After anodizing, NTs, 830 long, with average external diameter 92 nm, grown; this gave a high conversion rate oxide from (1.9), 220 layer titanium, which not oxidized, located the base tubes. The NTs revealed mainly...
Bacterial attachment and colonization to hygiene sensitive surfaces, both public nosocomial, as well in food industry areas, poses a serious problem human healthcare. Several infection incidents are reported, while bacterial resistance antibiotics is increasing. Recently, novel techniques for the design of antibacterial surfaces limit spreading have emerged, including bifunctional with antifouling bactericidal action. In this context, we recently developed smart, universal, metal-sputtered...
In this study nanocomposites consisting of an epoxy resin and ceramic zinc ferrite nanoparticles have been successfully developed investigated morphologically structurally by means scanning electron microscopy (SEM) images X-ray diffraction (XRD) spectra. The thermal properties the were studied via differential calorimetry (DSC) thermogravimetric analysis (TGA). thermomechanical characterization fabricated was dynamic mechanical (DMA) magneto-dielectric response assessed a broadband...
In this study, hybrid nanocomposites consisting of Fe3O4/BaTiO3/epoxy resin were prepared with varying amounts filer content. Structural and morphological characterization, conducted via X-Ray Diffraction patterns Scanning Electron Microscopy images, revealed the successful fabrication composites fine dispersion inclusions. Thermomechanical properties are studied Differential Calorimetry, Thermogravimetric Analysis, Dynamic Mechanical Analysis static mechanical tests. Hybrid exhibit enhanced...
In the present study two sets of nanocomposites consisting an epoxy resin and BaFe12O19 or SrFe12O19 nanoparticles were successfully developed characterized morphologically structurally via scanning electron microscopy X-ray diffraction spectra. The dielectric response was investigated by means broadband spectroscopy their magnetic properties derived from magnetization tests. Experimental data imply that incorporation ceramic enhances significantly examined systems ability to store...
Atomic layer deposition of HfO<sub>2</sub> significantly increases the efficiency and prolongs lifetime organic solar cells.
Abstract This work reports the trace determination of Tl(I) by square‐wave anodic stripping voltammetry (SWASV) on novel microsensors equipped with a bismuth‐film electrode (BiFE). The sensors were fabricated multistep microfabrication approach combining sputtering (to deposit materialm, bismuth‐ and insulator SiO 2 , surface silicon wafer) photolithography define geometry sensor). effect preconcentration time, potential SW parameters investigated. Using selected conditions, 3 σ limit...
Hard-FePt(L10)/graded-FePt(L10 to A1) exchange spring composite media with perpendicular magnetic anisotropy have been studied. Changing the deposition temperature affects structural transformation of FePt from cubic phase A1, which is magnetically soft, tetragonal L10, hard. Using this mechanism we were able fabricate hard/graded films. Magnetic measurements revealed a significant reduction films’ switching fields in comparison those single hard layer.
A new flexible miniaturized integrated device was microfabricated for the in situ ultrasensitive voltammetric determination of DNA mutation a microwell format, using quantum dots (QDs) labels. The consisted thin Bi, Ag, and Pt films (serving as working, reference, counter electrode, respectively) deposited by sputtering on polyimide substrate. assay employed where an immobilized complementary oligonucleotide probe hybridized with biotinylated target followed reaction streptavidin-conjugated...
Iron magnetic moment enhancement is observed following the irradiation of iron films with 490 keV $\mathrm{F}{\mathrm{e}}^{+}$ at room temperature. The increases to saturation dose. enhanced decays exponentially its value before a time constant 5.2 months. attributed creation vacancy clusters having concentration about 20%, whereas relaxation effects dissociation these clusters.