Browsing Ústav fyziky by Title
Now showing items 1-19 of 67
-
Aluminum Nitride Nanofilms by Atomic Layer Deposition Using Alternative Precursors Hydrazinium Chloride and Triisobutylaluminum
(MDPI, 2020-10-03)The aim of this study is motivated by the pursuit to investigate the performance of new and as yet untested precursors such as hydrazinium chloride (N2H5Cl) and triisobutylaluminum Al(C4H9)3 in the AlN atomic layer deposition ... -
Analysis of learning methods in the digital educational environment
(EDP Sciences, 2022-06-24)In this paper, modern ways of digitalization of the educational process are considered and analyzed. An alternative innovative solution can be a theory of inventive problem solving (TRIZ) a methodology, taking into account ... -
Atomic Layer Deposition of Mixed-Layered Aurivillius Phase on TiO2 Nanotubes: Synthesis, Characterization and Photoelectrocatalytic Properties
(MDPI, 2020-11-02)For the first time, one-dimensional phase-modulated structures consisting of two different layered Aurivillius phases with alternating five and six perovskite-like layers were obtained by atomic layer deposition (ALD) on ... -
A brief introduction and current state of polyvinylidene fluoride as an energy harvester
(MDPI, 2022-09-29)This review summarizes the current trends and developments in the field of polyvinylidene fluoride (PVDF) for use mainly as a nanogenerator. The text covers PVDF from the first steps of solution mixing, through production, ... -
Brief Review of PVDF Properties and Applications Potential
(MDPI, 2022-11-08)Currently, there is an ever-growing interest in carbon materials with increased deformation-strength, thermophysical parameters. Due to their unique physical and chemical properties, such materials have a wide range of ... -
Brief Theoretical Overview of Bi-Fe-O Based Thin Films
(MDPI, 2022-12-07)This paper will provide a brief overview of the unique multiferroic material Bismuth ferrite (BFO). Considering that Bismuth ferrite is a unique material which possesses both ferroelectric and magnetic properties at room ... -
Case Study of Polyvinylidene Fluoride Doping by Carbon Nanotubes
(MDPI, 2021-03-15)Modern material science often makes use of polyvinylidene fluoride thin films because of various properties, like a high thermal and chemical stability, or a ferroelectric, pyroelectric and piezoelectric activity. Fibers ... -
Characterization and Evaluation of Engineered Coating Techniques for Different Cutting Tools-Review
(MDPI, 2022-08-01)Coatings are now frequently used on cutting tool inserts in the metal production sector due to their better wear resistance and heat barrier effect. Protective hard coatings with a thickness of a few micrometers are created ... -
Characterization of GaAs Solar Cells under Supercontinuum Long-Time Illumination
(MDPI, 2021-01-19)This work is dedicated to the description of the degradation of GaAs solar cells under continuous laser irradiation. Constant and strong exposure of the solar cell was performed over two months. Time-dependent electrical ... -
Characterization of nanoblisters on HOPG surface
(De Gruyter OPEN, 2019-08-07)We report on influence of the surface functionalization on the properties of highly oriented pyrolytic graphite. The samples were processed in nitric acid and characterized by XPS, Raman and EDX spectroscopies, AFM, SEM ... -
Characterization of Polyvinylidene Fluoride (PVDF) Electrospun Fibers Doped by Carbon Flakes
(MDPI, 2020-11-24)Polyvinylidene fluoride (PVDF) is a modern polymer material used in a wide variety of ways. Thanks to its excellent resistance to chemical or thermal degradation and low reactivity, it finds use in biology, chemistry, and ... -
Comparative Study of PVDF Sheets and Their Sensitivity to Mechanical Vibrations: The Role of Dimensions, Molecular Weight, Stretching and Poling
(MDPI, 2021-06-22)This paper is focused on the comparative study of the vibration sensing capabilities of poly(vinylidene fluoride) (PVDF) sheets. The main parameters such as molecular weight, initial sample thickness, stretching and poling ... -
Complementary SEM-AFM of Swelling Bi-Fe-O Film on HOPG Substrate
(MDPI, 2020-05-23)The objective of this work is to study the delamination of bismuth ferrite prepared by atomic layer deposition on highly oriented pyrolytic graphite (HOPG) substrate. The samples’ structures and compositions are provided ... -
Comprehensive characterization of PVDF nanofibers at macro- and nanolevel
(MDPI, 2022-02-01)This study is focused on the characterization and investigation of polyvinylidene fluoride (PVDF) nanofibers from the point of view of macro- and nanometer level. The fibers were produced using electrostatic spinning process ... -
Crack resistance of bismuth ferrite films obtained on a flexible substrate
(EDP Sciences, 2021-07-26)Ultrathin BiOx and FeOx layers were obtained by Atomic Layer Deposition (ALD) on the surface of a flexible Kapton substrate (poly (4,4’-oxydiphenylene-pyromellitimide)) at a temperature of 250 °C. The layer thickness was ... -
Current applications and challenges of the Internet of Things
(Vilnius Gediminas Technical University, 2023-04-11)The concept of the Internet of Things is capable of making a giant leap in the economy, including research in the field of computer science, network technologies, microelectronics and sensor technology. Combined with the ... -
Current-fluctuation measurements of amperometric gas sensors prepared by three different technology procedures
(Polish Academy of Sciences, 2016-12-13)The paper focuses on usage of noise measurement (electric current-fluctuation measurement) for evaluation of electrochemical sensors which were prepared by different fabrication processes: (i) lift-off and drop-casting ... -
Effect of extrusion process and various elongation ratios on the structural and dielectric properties of PVDF-based copolymer containing micro and nano-sized crystallites
(TANGER Ltd., 2021-07-11)In this contribution, the effect of the extrusion process of the poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-co-HFP) with the subsequent elongation/poling on its structural and dielectric properties is presented. ... -
Effect of the Different Crystallinity of Ionic Liquid Based Solid Polymer Electrolyte on the Performance of Amperometric Gas Sensor
(MDPI, 2020-11-14)Solid polymer electrolytes (SPE) based on ionic liquid, poly-(vinylidene fluoride) and solvent N-methyl-pyrrolidone represent an effective component in electrochemical sensors. The advantage lies in their composition, which ...