A5049712589- Metal and Thin Film Mechanics
- Advanced materials and composites
- Microstructure and mechanical properties
- Electronic and Structural Properties of Oxides
- Ferroelectric and Piezoelectric Materials
- MXene and MAX Phase Materials
- Nanoparticle-Based Drug Delivery
- Magnetic Properties and Synthesis of Ferrites
- Environmental remediation with nanomaterials
- Iron oxide chemistry and applications
- Multiferroics and related materials
- Nanocomposite Films for Food Packaging
- Microwave Dielectric Ceramics Synthesis
- Silicone and Siloxane Chemistry
- ZnO doping and properties
- Membrane Separation Technologies
- Perovskite Materials and Applications
- Bee Products Chemical Analysis
- Thermochemical Biomass Conversion Processes
- Titanium Alloys Microstructure and Properties
- Catalysts for Methane Reforming
- Anaerobic Digestion and Biogas Production
- Magnesium Alloys: Properties and Applications
- Synthesis and properties of polymers
- Magnesium Oxide Properties and Applications
National University of Sciences and Technology
2019-2024
University of the Sciences
2023
Technical University of Darmstadt
2016-2021
National University of Science and Technology
2020
Abstract Polysilazane coatings have a broad need in real‐life applications, which require low processing or working temperature. In this work, five commercially available polysilazanes been spin‐coated on polycarbonate substrates and cured ambient environment temperature to obtain transparent, crack‐free, dense films. The degree of crosslinking is found significant impact the hardness Young's modulus polysilazane films but has minor influence film thickness hydrophobicity. Among all...
Abstract To comprehend the mechanical behavior of a polycrystalline material, an in-depth analysis individual grain boundary (GB) and dislocation interactions is prime importance. In past decade, nanoindentation emerged as powerful tool to study local response in vicinity GB. The improved instrumentation test protocols allow capture various GB–dislocation during form strain bursts on load–displacement curve. Moreover, interaction plastic zone with GB provides important insight into...
Abstract In the present work, dislocation structure evolution around and underneath spherical indentations in (001) oriented single crystalline strontium titanate (STO) was revealed by using an etch‐pit technique molecular dynamics (MD) simulations. The 3D defect at various length scales subsurface depths resolved with help of a sequential polishing, etching, imaging technique. This analysis, combined load‐displacement data, shows that incipient plasticity (manifested as sudden indenter...
An active and intelligent starch-based biodegradable food packaging system is developed in this work. The growing environmental protection concerns have motivated researchers to look for yet sustainable products packaging. able resist against undesirable bacterial attack color-change response due pH change food. Polyvinyl alcohol starch are cross-linked with Glutaraldehyde improve their mechanical strength. Propolis Extract (PE) anthocyanin (ATH) were added as an material, respectively....
Synthesis of regenerable chitosan-embedded magnetic iron oxide beads.
Abstract Nanoindentations with a Berkovich type indenter were performed on (001) strontium titanate ( STO ) single crystal at 25°C and 350°C, analyzing the influence of temperature indentation size effect ISE dislocation structure around residual impression. It is found that exhibits an , which strongly reduced 350°C compared to 25°C. The impression has been resolved using etch‐pit technique. At 25°C, extension pile‐ups be shorter as 350°C. This also correlates smaller effects Peach‐Koehler...
Abstract In the present work, dislocation structures at grain boundary (GB) pop-in events were studied around and below Berkovich indentations using electron channeling contrast imaging (ECCI) in polycrystalline tungsten. The GB identified as displacement bursts load–displacement curve, indentation experiments stopped just after occurrence of burst. A significant hardness increase was observed before event. careful ECCI analysis on sequential polished cross sections clearly shows pile-up...
To overcome the inherent weakness of polylactic acid (PLA), used as scaffolding materials, multiple samples Mg/PLA alloy composite materials was made by plastic injection molding. enhance interfacial interaction with PLA, magnesium treated microarc oxidation (MAO) at four different frequencies, resulting in an improvement mechanical strength and toughness. The films consisted mainly a porous MgO ceramic layer on Mg rod. Based phenomenon micro-anchoring electrostatic interaction, change...
Abstract In this study, the polyether sulfone (PES) based membranes containing various concentrations of graphene oxide (GO), polyvinylpyrrolidone (PVP), and polyethylene glycol (PEG) were synthesized via phase immersion method. This study aims to evaluate effect GO addition on structural properties performance membranes. The analyzed by x-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transforms infrared spectroscopy (FTIR). FTIR-ATR spectra indicated presence hydroxyl...
In the present work, Mg1-xZnxFe2O4 (MZFO) nanoparticles with x = 0.0, 0.2, 0.35, and 0.5 were synthesized via a chemical coprecipitation method. The study aimed to explore effect of substituting Mg Zn in MZFO on its structural, dielectric, gas-sensing properties. spinel phase formation was confirmed using X-ray diffraction, morphology prepared revealed scanning electron microscopy. Fourier transform infrared spectroscopy (FTIR) analysis band ranges 500-600 cm-1 for tetrahedral 390-450...
Abstract Purpose This work aimed to study the drug delivery applications of iron oxide (Fe 3 O 4 ) nanoparticles with strontium (Sr) doping varying molar ratios prepared by co-precipitation route. The impact increased content on particle size and magnetic properties was investigated. impending these for loading, release, their respective cytotoxicity also inspected. Methods First, were doped various amounts strontium, from 0.25, 0.50, 0.75, 1 mole using method. These synthesized...