A5030719267- Metal and Thin Film Mechanics
- Diamond and Carbon-based Materials Research
- High-Temperature Coating Behaviors
- Supercapacitor Materials and Fabrication
- Tribology and Wear Analysis
- Lubricants and Their Additives
- Carbon Nanotubes in Composites
- Ion-surface interactions and analysis
- Advanced materials and composites
- Material Properties and Applications
- Catalytic Processes in Materials Science
- Electrospun Nanofibers in Biomedical Applications
- Plasma Applications and Diagnostics
- Surface Treatment and Coatings
- Gas Sensing Nanomaterials and Sensors
- Conducting polymers and applications
- Laser Material Processing Techniques
- Ferroelectric and Piezoelectric Materials
- Advanced ceramic materials synthesis
- Plasma Diagnostics and Applications
- Laser-Ablation Synthesis of Nanoparticles
- Electronic and Structural Properties of Oxides
- Semiconductor materials and devices
- Advancements in Solid Oxide Fuel Cells
- Advanced Sensor and Energy Harvesting Materials
Kaunas University of Technology
2016-2025
Lithuanian Energy Institute
2016-2025
Energy Institute
2015
Problem-based learning (PBL) is an educational method which involves by solving real problems. However, applying a PBL approach to engineering subjects in some cases became challenging issue. Thus, it important determine the best ways students can learn physics more effectively and solve problems relevant their daily lives. The main aim of this study was compare final assessment grades course for program using traditional (TL) methods. advantages disadvantages TL methods from practical...
In this work, gliding arc discharge (GAD) was used to produce air plasma and investigate the influence of parameters on composition plasma, vibrational temperatures, production NOx. It demonstrated that main particles obtained in GAD were N2*, N2+, N+, NOγ, O. observed reduction frequency increased intensity excited nitrogen molecules lines reduced nitric oxide (NO) dioxide (NO2) gas concentrations. The increase output voltage prolonged duration enhanced intensities emission O, NOγ species...
As the industry develops and energy demand increases, wind turbines are increasingly being used to generate electricity, resulting in an increasing number of obsolete turbine blades that need be properly recycled or as a secondary raw material other industries. The authors this work propose innovative technology not yet studied literature, where mechanically shredded micrometric fibers formed from obtained powder using plasma technologies. shown by SEM EDS studies, is composed irregularly...
Cr-doped diamond-like carbon (DLC) films were formed on silicon and glass substrates by magnetron sputtering (MS). The surface morphology, elemental composition, bonding structure, transparency of the as-deposited analyzed atomic force microscopy (AFM), energy-dispersive X-ray spectroscopy (EDS), multiwavelength micro-Raman spectrometer, UV-VIS-NIR spectrophotometer. study revealed that oxygen concentration in Cr-DLC increased as Cr content increased. roughness was slightly reduced when ~9.2...
Modern industrial systems and biomass-fired furnaces require surface treatments that can withstand aggressive chemical, thermal, corrosive environments. This study investigates the corrosion thermal resistance of plasma-sprayed Al2O3-TiO2 coatings produced using a DC air–hydrogen plasma spray process. Coatings compositions Al2O3, Al2O3-3 wt.% TiO2, Al2O3-13 Al2O3-40 TiO2 were deposited on steel substrates with Ni/Cr bond layer by spraying. The characterized scanning electron microscopy...
Non-hydrogenated diamond-like carbon (DLC) films and molybdenum-doped (Mo-DLC) were deposited by direct current magnetron sputtering. The formation was carried out on Si (100) wafers. influence of molybdenum concentration deposition temperature the surface morphology, chemical composition, type bonds, friction force at nanoscale, nanohardness DLC coatings investigated atomic microscopy (AFM), energy dispersive X-ray spectroscopy (EDX), photoelectron (XPS), Raman spectroscopy, nanoindenter,...
Herein, photothermal modification of nanocomposite films consisting hydrated vanadium pentoxide (V2O5·nH2O) nanoribbons wrapped with graphene oxide (GO) flakes was performed via 405 nm direct laser irradiation. The combination X-ray diffraction, photoelectron spectroscopy, Raman scattering, transmission electron microscopy, and scanning microscopy allowed comprehensive characterization physical chemical changes GO/V2O5·nH2O upon modification. modified exhibited porous surface morphology...
The two- and three-chamber, linear, high voltage (200–300 V) limited current (120–280 A) plasma generators (PGs) have been designed manufactured by us for application in surface engineering. operating thermal characteristics (TC) of PGs, along with the distribution enthalpies velocities jet were measured analysed under atmospheric pressure conditions air. influence arc current, gas flow rate anode diameter on current–voltage efficiency are investigated. modified similarity theory has used...
In this study, Cr2O3, Cr2O3-SiO2-TiO2 and Cr2O3-SiO2-TiO2-graphite coatings were formed by atmospheric plasma spraying. The influence of SiO2-TiO2 SiO2-TiO2-graphite reinforcements on the surface morphology, elemental composition, structure tribological properties chromia was determined. friction coefficients specific wear rates investigated a ball-on-flat configuration using 1 N 3 loads under dry-lubrication conditions. addition resulted in lowest roughness most homogenous coatings. X-ray...
A gliding arc discharge (GAD) plasma device has been developed and tested. Possible applications areas for GAD could be microalgae suspension treatments the creation of plasma-activated water. To understand its behavior, influence input power on electrical characteristics generated was investigated using an oscilloscope. The waveforms voltage current are presented. duration time evolution during were determined investigated. It revealed that increase in output prolonged discharge....
Two series of non-hydrogenated diamond-like carbon (DLC) films and molybdenum doped (Mo-DLC) were grown on the silicon substrate using direct current magnetron sputtering. The influence doping (between 6.3 11.9 at.% Mo), as well deposited temperature 185 235 °C) surface morphology, elemental composition, bonding microstructure, friction force, nanohardness films, characterized by atomic force microscopy (AFM), energy dispersive X-ray spectroscopy (EDX), Raman spectroscopy, a nanoindenter. It...
The plasma-activated reactive evaporation technique was used for the formation of indium-tin-oxide (ITO) films. ITO films were deposited on a heated (up to 350 °C) glass substrates using various mass ratios indium and tin. optical electrical properties determined. influence indium-to-tin ratio transmittance, bandgap, resistivity resistance investigated. bandgap increased from 3.18 3.37 eV, MIn/MSn 4.25 10.00. average values transmittance at visible light wavelengths ~43% ~64% as tin reduced....
In this study a carbon and NiO/carbon electrodes were prepared investigated.The surface roughness increases with the increase of torch power.The addition NiO changes structure from snowflake-like to mesh-like.It was demonstrated that nickel oxide amorphous specific capacitance composite electrode.However, have lower breakdown voltage values longer charge-discharge cycles.