A5043757910- Luminescence and Fluorescent Materials
- Organic Light-Emitting Diodes Research
- Organic Electronics and Photovoltaics
- Bone Tissue Engineering Materials
- X-ray Diffraction in Crystallography
- TiO2 Photocatalysis and Solar Cells
- Dental materials and restorations
- Metal and Thin Film Mechanics
- Pigment Synthesis and Properties
- Advanced Photocatalysis Techniques
- Copper-based nanomaterials and applications
- Nanofabrication and Lithography Techniques
- Photochromic and Fluorescence Chemistry
- Graphene and Nanomaterials Applications
- Perovskite Materials and Applications
- Material Selection and Properties
- Advanced Chemical Sensor Technologies
- Ferroelectric and Piezoelectric Materials
- MXene and MAX Phase Materials
- Nonlinear Optical Materials Studies
- Facial Trauma and Fracture Management
- High-pressure geophysics and materials
- Acoustic Wave Resonator Technologies
- Non-Destructive Testing Techniques
- Photochemistry and Electron Transfer Studies
Kaunas University of Technology
2020-2024
Islamic Azad University of Najafabad
2019
We report on a comparison of methods based XRD patterns for calculating crystal size. In this case, peaks were extracted from hydroxyapatite obtained cow, pig, and chicken bones. Hydroxyapatite was synthesized through the thermal treatment natural bones at 950 °C. selected by adjustment X-Pert software each method size crystals. Methods consisted Scherrer (three models), Monshi-Scherrer, three models Williamson-Hall (namely Uniform Deformation Model (UDM), Stress (USDM), Energy Density...
A key parameter in the analysis of compounds and study their physical, chemical, mechanical properties is knowledge crystal size. There are two common techniques for determining this size: transmission electron microscopy (TEM) Brunauer-Emmett-Teller theory (BET). These methods time-consuming expensive; thus, calculation size by X-ray diffraction (XRD) proposed. several calculating diffraction, but not all peaks were considered errors very large. In study, Modified Scherrer method...
Young's modulus (E) is one of the most important parameters in mechanical properties solid materials. proportional to stress and strain values. There are several experimental theoretical methods for gaining values, such as stress-strain curves compression tensile tests, electromagnetic-acoustic resonance, ultrasonic pulse echo density functional theory (DFT) different basis sets. Apparently, preparing specimens measuring through not convenient it time-consuming. In addition, calculating...
Taking into account X-ray diffraction, one of the well-known methods for calculating stress-strain crystals is Williamson-Hall (W–H). The W-H method has three models, namely (1) Uniform deformation model (UDM); (2) stress (USDM); and (3) energy density (UDEDM). USDM UDEDM models are directly related to modulus elasticity (E). Young’s a key parameter in engineering design materials development. considered but all previous studies, researchers used average values or they calculated only sharp...
The efficiency of organic light-emitting diodes (OLEDs) with multiple functional components is still limited owing to their complicated design and fabrication process. A postfunctionalization strategy was exploited develop devices derived from terpyridine derivative bipolar host 4′-(3′,4′,5′-triphenyl-[1,1′:2′,1″-terphenyl]-4-yl)-2,2′:6′,2″-terpyridine overcome this limitation. glass transition temperature up 176 °C, the favorable for practical OLED devices. crystallite size powder...
Recently, researchers have focused on the biocompatibility and mechanical properties of highly porous structures biomaterials products. Porous composites are a new category bioengineering that possess excellent functional structural properties. In this study, physical prepared doped silver (Ag)-hydroxyapatite (HA) by mechanochemical spark plasma sintering (SPS) methods were investigated. The influence dopant phase formation, properties, morphological characteristics was Furthermore, in case,...
Calcium titanate-CaTiO3 (perovskite) has been used in various industrial applications due to its dopant/doping mechanisms. Manipulation of defective grain boundaries the structure perovskite is essential maximize mechanical properties and stability; therefore, attracted attention, because without fully understanding diffracted planes, mechanisms cannot be understood. In this study, areas locations atoms planes were designed investigated. research, relationship between Young’s modulus planar...
Mg-based alloys have several suitable properties for biomaterials, but they major problems of being less antibacterial and a low mechanical strength. To solve these problems, new combination Ag/Zn/Mg was prepared in this study, where the presence Zn Ag can help to increase bioactivity. The use 5 wt.% polymers consisting PolyCaproLactone (PCL), PolyHydroxyButyrate (PHB) PolyVinylTriMethoxySilane (PVTMS) is also investigated. DSC, XRD, TEM, FTIR, SEM, EDAX analysis, as well bioactive behavior,...
Novel nano-composite composed of poly vinyl butyral co alcohol acetate (PVB-co-VA-co-VAc) covered with bone skeleton like hydroxyapatite (HA) and coating the graphene (G) was produced through combined phase separation technique physical evaporation deposition (PVD) method. The chemical formula HA is (Ca <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> (PO xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> )...
In this study, new composites based on polyvinylidene fluoride (PVDF) were ornamented and prepared with hydroxyapatite (HA) silver nitride (AgNO3). Taking into account the polarity of solvent dimethyl sulfoxide, was used to disperse particles. The aim using DMSO create amorphous phases strong dipoles C–F bond reduce energy barrier improve electrical properties. PVDF played role matrix in HA, AgNO3 as reinforcing elements. X-ray diffraction samples directly showed phase mixed crystalline when...
Corrosion is a harmful processes which by definition chemical or electrochemical reaction between substance (usually metal) and the environment leads to change in properties of has destructive effects. In this study, new composites consisting Al/WS2/ZnTerp-2TH with 5 10 wt.% ZnTerp-2TH were prepared results fully compared. Al/WS2 played role matrix reinforcement. other words, as novelty prevent corrosion Al/WS2, designed synthesized showed good when ratio was reduced existence ZnTerp-2TH....
In this study preparation and thermal, electrochemical, photophysical properties of the compounds are reported.New series consisting 4-Allylamino-N-4-aminobenzenesulfonamide-1,8-naphthalimide, 4-Amino-N-4-amino-N-(2-pyrimidinyl) benzenesulfonamide-1,8-naphthalimide 4-Allylamino-N-4-amino-N-(2pyrimidinyl) were synthesized via sonic method from intermediate 4-nitro-1,8naphthalimide by imidation, reduction allylation reactions.These characterized thin layer chromatography (TLC), differential...
In this paper, a novel nanocrystalline composite material of hydroxyapatite (HA)/polyvinyltrimethoxysilane (PVTMS)/iron(II)chloride tetrahydrate (Cl2FeH8-O4) with hexagonal structure is proposed for the fabrication gas/temperature sensor. Taking into account sensitivity HA to high temperatures, prevent collapse and breakdown bonds leakage volatiles without damaging structure, freeze-drying machine designed fabricated. X-ray diffraction, FTIR, SEM, EDAX, TEM, absorption photoluminescence...
Two dyes containing of thioxanthenone derivative as an acceptor unit, were designed and synthesized for thermally activated delayed fluorescence (TADF) organic light emitting diodes (OLEDs). The photoluminescence (PL) spectra hammered shifted the mechanochromic. Ionization potential (IP) values spin-coated on fluorine-tin oxide film ranged from -5.42 to -5.49 eV hole mobility reached 2.64×10-4 3.56×10-4 cm2 V-1s-1. Considering higher quantum yields (PLQYs) solid films (16, 21%) that...