Research Interest
My researches focus mainly on the following fields:
Nanoparticle detection using wide-field surface plasmon resonance microscopy. Presented a number of theoretical and experimental methods designed to understand and enhance the detection of nanoparticles with low concentrations using wide-field surface plasmon resonance microscopy (WF-SPRM); Derived a discrete particle model of SPR to describe the SPR sensor of discrete particle detection; Investigated the coupling behavior of the WF-SPRM with metal nanoparticles using theoretical, simulation, and experimental approaches.
Energy production and storage. Developing and enhancing electrodes with different types of nanostructures for photo/electro-catalytic hydrogen production that is used as a clean energy source. Additionally, I developed new electrochemical catalytic stainless-steel electrodes with outstanding features compared to the traditional electrodes with different structures. It is intended to obtain electrochemical catalytic electrodes with a high electric field between the two opposite electrodes with a wide range of interactions due to their shapes using a highly perforated coaxial cylindrical configuration inspired by the shape of the double-walled carbon nanotubes.
Crystallography. Analyzing the powder XRD patterns for crystalline and semi-crystalline materials to investigate the crystal structure and microstructural parameters, including lattice constants, crystallite size, dislocation density, strain, crystallite density, average residual stress, total internal stress, interfacial tension, and strain energy density. Additionally, I can use the Rietveld refinement method to analyze the powder XRD patterns to get more accurate properties.
Spectroscopy. Investigating the chemical structure using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, UV-Vis spectroscopy, nuclear magnetic resonance spectroscopy (NMR), and X-ray photoelectron spectroscopy (XPS).
Optical analysis and applications of thin films. Investigating the optical properties of thin films, including optical absorption studies, bandgap studies, Urbach energy, optical constants (extinction coefficient and refractive index), and other dispersion energy parameters using UV-Vis spectroscopy. Additionally, I have derived a novel mathematical model for calculating optical band gap energy and the film thickness from the transmission spectra for spectrophotometer measurements. Synthesis of multi-types of optical thin films, including metals, metal oxides, metal sulfides, metal nitrides, polymers, co-polymers, complex composites, and nanocomposites, in nano- and micro-sizes for optoelectronic application, antireflection coating, UV-shielding, hydrophobic and hydrophilic surfaces, optical data storage, optical sensors, and solar energy storage materials.
Electrical analysis and applications of thin films. Investigating the electrical properties of thin films, including resistance, sheet resistance, resistivity, and conductivity using an IV-characteristic, 4-point probe, and electrical impedance. Additionally, we investigated the electrical conductivity within the percolation phenomenon and mixed ionic-electronic conductive materials. Synthesis of multi-types of electrical thin films, including metals, metal oxides, metal sulfides, metal nitrides, polymers, co-polymers, complex composites, and nanocomposites, in nano- and micro-sizes for electronic applications, UV-photodetectors, electronic devices, and photovoltaics.
Dielectric analysis and applications of thin films. Investigating dielectric properties for thin films using broadband dielectric impedance spectrometer, I focused on the analysis of dielectric constant, dielectric loss, real and imaginary parts of modulus using various models, such as Havriliak-Negami (HN) model and Bergman model.
Characterizations for thin films and nanostructures. Investigating the thermal properties using thermogravimetric analysis (TGA) and Differential scanning calorimetry (DSC). Investigating the morphological properties using scanning electron microscope (SEM), atomic force microscope (AFM), and water contact angle measurements.
Using nanostructures in different engineering applications. Developing and enhancing metal, metal oxides, and metal sulfides nanostructures for many applications, including photo/electro-catalytic degradation, anti-corrosion coating, molecular solar thermal energy storage media, and electrochemical capacitance.
Biomedical applications. Developing and enhancing nanostructures for antimicrobial, anticancer, and biosensor applications. Additionally, in collaboration with a medical doctor, detailed analyses have been conducted to understand changes that occurred to the physical, optical, and chemical characteristics of the silicone oil after removal from the vitreous cavity.
Physical chemistry. Investigating the formation and transportation of ionic charge carriers in an acid-water system through different spectroscopic techniques and physical measurements, where the acid dissociation in water serves as a model for studying dissociation processes, ionic charge creation, hydrogen-bonded complexes, and intramolecular kinetics of acid hydrations.