
Ahmad AlsaadJordan University of Science and Technology | Just · Department of Physics
Ahmad Alsaad
PhD-University of Arkansas/Department of Physics/Fayetteville-Arkansas/USA
I start a new project on quantum computation and quantum emulation using cold atoms. I welcome new collaboration.
About
174
Publications
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Introduction
I am currently working on synthesis and characterization of different polymeric thin films doped with a variety of nanoparticles. We use XRD technique to identify the structural properties of different systems. We use UV-Vis measurements to characterize the optical properties of different systems. the morphology and surface of different systems are investigated using techniques like SEM, EDAX,etc.
Computationally, VASP within the framework of DFT is used to investigate molecular ferroelectrics.
Skills and Expertise
Additional affiliations
January 2002 - present
June 2016 - August 2016
January 2003 - August 2016
Education
August 1996 - January 2002
Publications
Publications (174)
We present novel experimental and ab initio simulations on the Interplay of 3d and 4f Magnetism in Chiral Y6FeSi2S14 and
Tb6FeSi2S14 Chalcogenides. The state-of-art detailed results on both Chalcogenides crucial for synthesizing and characterizing similar systems. This work was primarily supported by the U.S. Department of Energy (DOE) Established...
In this work, we present and report on the evolution of thermoelectric properties altered through changes in the energy barrier height in thermally evaporated mixed-phase copper sulfide thin films. The physical interpretations depend on the conception of degenerate energy levels near the top of the valence band. The energy barrier at grain boundari...
We present an extensive analysis of the structural, electronic, optical, elastic, and thermoelectric properties of
BiGa2X4 compounds, where X represents either sulfur (S) or selenium (Se). Our approach employed the allelectron
full potential linearized augmented plane wave (FP-LAPW) technique, offering a comprehensive understanding
of these materia...
We present an extensive analysis of the structural, electronic, optical, elastic, and thermoelectric properties of compounds, where represents either sulfur () or selenium (). Our approach employed the all-electron full potential linearized augmented plane wave (FP-LAPW) technique, offering a comprehensive understanding of these materials' characte...
This work presents the simulation of a novel surface plasmon resonance (SPR) biosensor composed of silver/tin-selenide/graphene. The designed sensor aims to detect biological constituents in various chemical and biological solutions. While simulation packages based on finite element methods (FEM) are typically utilized in engineering and physics fo...
This study presents an innovative surface plasmon resonance (SPR) biosensor model constructed with a glass prism coated first with a layer of silver followed by a graphene layer (glass prism/Ag/graphene). The biosensor was analyzed using a finite element method-based simulation platform. Evaluation of the SPR sensor was conducted using a range of n...
Maximizing the power delivered by a thermoelectric generator (TEG) (with an internal resistance R TE) can be achieved by optimizing its design taking into account the external load (with a resistance of R L). In the present work, the evolution of the thermoelectric (TE) properties of the materials along the leg was considered. By considering a fixe...
This work presents the simulation of a novel surface plasmon resonance (SPR) biosensor composed of silver/tin-selenide/graphene. The designed sensor aims to detect biological constituents in various chemical and biological solutions. While simulation packages based on finite element methods (FEM) are typically utilized in engineering and physics fo...
This study employs ab initio calculations based on density functional theory (DFT) to investigate the structural properties, ¹H-NMR spectra, and vibrational spectra of methane sulfonic acid (MSA) at low degree of hydration. The findings reveal that energetically stable structures are formed by small clusters consisting of one or two MSA molecules (...
This study employs a first-principles approach to comprehensively investigate the structural, electronic, elastic, and optical properties of two distinct inorganic perovskite phases of CsPbI 3 , identified as C-CsPbI 3 and O-CsPbI 3. Utilizing the Wien2K code, simulations are conducted employing various density functional theory (DFT) approximation...
Citation: Alsaad, A.M.; Al-Hmoud, M.; Rababah, T.M.; Marashdeh, M.W.; Aljaafreh, M.J.; Abu Alrub, S.; Binzowaimil, A.; Telfah, A..sa (M.J.A.); snabualrub@imamu.sa (S.A.A.); Abstract: This study introduces a novel nanocomposite coating composed of PANI/CeO 2 nanocom-posite films, aimed at addressing corrosion protection needs. Analysis through FTIR...
Hexagonal BCN (h-BCN), an isoelectronic counterpart to graphene, exhibits chirality and offers the distinct advantage of optical activity in the vacuum ultraviolet (VUV) region, characterized by significantly higher wavelengths compared to graphene nanoflakes. h-BCN possesses a wide band gap and demonstrates desirable semiconducting properties. In...
Achieving high-efficiency materials-coated electrocatalysts for water splitting is crucial to produce and store renewable energy. Herein, zinc oxide (ZnO) films with wide bandgap (3.12 eV), low absorption coefficient in the visible region, and high electrical conductivity (740 S cm −1) were presented after using two modification techniques: first,...
A novel design of an optical biosensor based on surface plasmon resonance using tin selenide (SnSe) and graphene is presented. Including biological solutions, the performance of the obtained biosensor over a wide range of refractive index variations is promising. It is designed such that its key parameters are optimized to detect different cancerou...
The impact of the interaction strength between polymer and nanoparticles (NPs), ε NP , on the glass transition temperature, T g , and the phase separation in polymer nanocomposites (PNCs) is explored by employing molecular dynamics simulations. The variation of the T g with respect to ε NP shows interesting behaviors at low and high-volume fraction...
Nickel oxide material is considered an interesting class of p-transparent-conductive oxides for various fields of application. Improving the conductivity of these materials while retaining a high level of optical transmittance is considered a real challenge for their functional use. In the present work, a detailed study of the effect of cobalt inco...
The study aimed to identify the level of psychological capital among women affiliated with political parties and its relationship to the quality of family life in Jordan. To achieve the objectives of the study, a random sample of (429) women affiliated with political parties was chosen (an accessible sample) and the descriptive analytical correlati...
The impact of polymer chain stiffness characterized by the bending modulus (kθ) on the glass transition temperature (Tg) of pure polymer systems, as well as polymer nanocomposites (PNCs), is investigated using molecular dynamics simulations. At small kθ values, the pure polymer system and respective PNCs are in an amorphous state, whereas at large...
Polyethylene oxide‐poly(3,4‐ethylenedioxythiophene) (PEO‐PEDOT) nanocomposite films ‐ incorporated with NiZnFeO4 nanoparticles (NPs) were deposited using a dip‐coating technique. X‐ray diffraction (XRD) analysis revealed peaks at 35.4, 43.2, 54.5, and 56.3° diffraction angles, corresponding to NiZnFeO4NPs diffraction planes of 311, 400, 422, and 51...
The study objectives are to know the concept of the compulsory cash reserve and the money supply, and to clarify the concept of conventional and Islamic banks and their reality in Jordan and the extent of their ability to generate money, and to show the impact of the compulsory cash reserve in generating money and money supply, this is through a pr...
PEO/B 4 C nanocomposite films with various concentrations of B 4 C-NPs are fabricated by the casting method. The chemical and crystal structure, thermal, optical, electrical, and morphological properties of PEO/B 4 C nanocomposites films are examined. The PEO/B 4 C nanocomposite films have semicrystalline nature, and the amorphous phase is dominant...
The chemical, morphological, optical, and electrical properties of the deposited rubidium bis(2-methyllactato) borate monohydrate (RMB) nanocomposite films deposited on glass doped with iodine (I2) are studied. The RMB nanocomposite films exhibit a monoclinic structure, while the doped films with iodine exhibit amorphous microstructural nature. The...
This work introduces a newly designed electrochemical catalytic steel electrode coated with ZnO films based on a shape inspired by a double-walled carbon nanotube for water treatment and water-splitting applications. The proposed electrode structure shows high electrochemical catalytic degradation activity compared to other electrode structures. Th...
Synthesized PEO:I 2 complex composite films with different I 2 concentrations were deposited onto fused silica substrates using a dip-coating method. Incorporation of PEO films with I 2 increases the electrical conductivity of the composite, reaching a maximum of 46 mS/cm for 7 wt% I 2. The optical and optoelectronic properties of the complex compo...
The effect of hydrogen and nitrogen impurities on the physical properties of transparent conductive oxides is investigated in this study. Therefore, 5 wt.% of copper and 5 wt.% of nickel co-doped zinc oxide ((Cu-Ni)/ZnO) films were prepared using the sol-gel method. The (Cu-Ni)/ZnO films were annealed in an oven at 500 °C for 2 h under air, vacuum,...
The scarce negative Poisson’s ratio (NPR) in a two-dimensional (2D) material is an exceptional auxetic property that offers an opportunity to develop nanoscale futuristic multi-functional devices and has been drawing extensive research interest. Inspired by the buckled pentagonal iso-structures that often expose NPR, we employ state-of-the-art firs...
The profiles of food products are one interesting link that adds a new functional component. Cookies became one of the remarkable foods as a result of their simple preparation, a protracted period, and a sensible acceptance by the population. The effects of sonication on physical and sensory characteristics of cookies to be enhanced were studied. T...
Ionic conductivity and the conductivity mapping of PEO/CuSO4 complex composite films are investigated to
show the effect of the complexation of the Cu+2 and SO4 2 ions on the PEO matrix. Adding CuSO4 into the PEO
matrix decreases the crystallinity degree of PEO films and consequently enhances the ionic conductivity and
charge diffusion due to incr...
In this work, semiorganic crystal films based on sodium bis(2-methyllactato)borate (NaMB) doped with iodine (I2) were deposited on glass substrates using the dip-coating technique. The chemical, crystalline, and morphological structures were investigated. NaMB semiorganic crystal film has a monoclinic crystal structure with a P21/n space group and...
Complex composite films of potassium bis(2-methyllactato) borate hemihydrate (KMB) doped with iodine (I 2) were dip-synthesized on glass substrates in this work. The chemical, crystal, and morphological structures were investigated. Introducing I 2 into KMB host matrix forms KI molecules in the KMB complex composite, which increases the crystallite...
Metal oxide nanoparticles (MONPs) (ZnO, TiO 2 , SiO 2 , and CuO NPs) were synthesized with an average size of around 50 nm. The synthesized MONPs were incorporated into Poly(methyl methacrylate) (PMMA) matrix deposited on glass substrate led to form PMMA/MONPs nanocomposite films. Fourier-Transform Infrared (FTIR) spectroscopy was employed to inves...
We report a successful preparation of graphene oxide (GO) from a graphite powder using a modified low-temperature Hummer's method. Different concentrations of the prepared GO are then incorporated into the PEO polymer matrix to yield PEO/GO thin films using the casting method. The measured thickness of as-prepared nanocomposite thin films is 500 nm...
The physicochemical properties of polyaniline (PANI) incorporated with indium tin oxide nanoparticles (ITONPs; 0, 2, 4, 8, 16 wt.%) nanocomposite films were investigated for optoelectronic applications. These nanocomposite films have an enhanced crystallinity when compared to pure PANI. Moreover, the increase in ITONPs concentration in the PANI/ITO...
The electronic, elastic, and thermoelectric behaviors of the half-Heusler LiCrX (X = S, Se, and Te) compounds in the Type I phase are investigated. These three kinds of alloys have minimum energies of type I, rather than types II and III. As a result, Li, Cr, and X (X = S, Se, Te) atoms prefer the positions (0.25, 0.25,.25), (0.75, 0.75,.75), and (...
Four different ZnO nanostructures, namely nanoparticles, nanorods, nanoribbons, and nanoshuttles, were synthesized by controlling the pH levels, the chemical compositions, and the conditions of the process. Different ZnO nanostructures' structural, wettability, optical, and electrical properties depend on the morphology and particle size. In partic...
Polymer electrolytes based on poly(ethylene oxide)-aluminium chloride (PEO-AlCl3) are synthesized by the casting method. The crystal structure, chemical bonding, thermal, and electrical properties are investigated and correlated. Particularly, the interplay between the electrical conductivity, crystallinity, and thermal properties of the nanocompos...
Polyethylene oxide (PEO) incorporated with potassium permanganate (KMnO 4 ) was prepared using the solution casting technique forming PEO/KMnO 4 complex composite films. The physicochemical properties, doping mechanism, and electron transition bands of PEO/KMnO 4 were investigated. Introducing KMnO 4 PEO matrix led to a decrease in crystallinity de...
We report on the optical, chemical, and morphological properties of Polyethylene oxide (PEO) with Nb doped with (1%, 2%, 4%, and 8%) of potassium paramagnets (KMnO4) thin films. The as-prepared PEO–Nb–KMnO4 thin films are deposited using the casting technique on a glass substrate. The transmittance T% (i) and reflectance R% (λ) of PEO–Nb–KMnO4 thin...
We report on the photocatalytic degradation activity of methylene blue (MB) using Cellulose acetate (CA) membranes embedded by metal oxide nanoparti-cles (NPs). Titanium dioxide and Cerium dioxide (TiO 2 and CeO 2) and their nanocomposites are used as nanofillers in CA membranes to enhance photo-catalytic activity. The casted nanocomposite membrane...
Employing the FP-LAPW method, structural, electronic, optical, thermodynamical, and thermoelectric parameters of Bi2Al4Se8 compound are systematically investigated. The calculated structural parameters such as, in-plane lattice constant, out-of-plane lattice parameter, and axial ratio (a, c, c/a), as well as, atomic positions are found to be consis...
The mechanical and thermodynamical features of LiBH4 and LiAlH4 complex hydrides in the α, β and γ phases are evaluated using density functional theory. To our knowledge, thermal parameters such as, the Grüneisen parameter γ, the heat capacity, and thermal expansion coefficient of LiXH4 (X = B, Al) complex hydrides in α, β and γ phases are computed...
PMMA polymer doped by multi-walled carbon nanotubes (MWCNTs) has attracted much attention as promising materials for photovoltaic and opto-electronic applications. The undoped poly(methyl methacrylate) (PMMA) and PMMA/MWCNTs nanocomposite films doped with varying concentrations of Zirconium dioxide nanoparticles (ZrO 2 NPs) are synthesized using th...
In this work, the complex composite thin films based on polyvinyl chloride (PVC) doped with different iodine (I2) concentrations are deposited on a glass substrate. The doping mechanism and chemical properties for the PVC–I2 complex composites are studied using FTIR and UV–Vis absorbance spectroscopies, in addition to TGA. Optical and optoelectroni...
A well-prepared ZnO and (Cd–Ni) co-doped ZnO thin films are synthesized using the simple, inexpensive sol–gel method by immersing technique. The optical, structural, and morphological characterizations of (Cd–Ni) co-doped ZnO thin films are performed by employing UV–Vis spectrophotometry, X-ray diffraction (XRD), and the scanning electron microscop...
We report ab-initio calculation of the structural, magnetic, elastic, and electronic properties of the PrX (X=P, As and Bi). The structural stability and phase transition of PrX (X=P, As, Bi) compounds in (NaCl-type), (CsCl-type), (Zinc blende-type), WC-Bh (Hexagonal) and L10 (Tetragonal) structures in ferromagnetic state are investigated using the...
We report on the synthesis and characterization of Cu2ZnSnS4 (CZTS) thin films prepared at different annealing temperatures using the sol-gel method and deposited on glass substrates using the immersing method. The XRD analysis demonstrates that the films annealed at 450° C exhibit the most stable tetrahedral kesterite structure. Computationally, t...
Synthesis, optical, mechanical, and structural characterization of organic-inorganic nanocomposite thin films based on polyethylene oxide and poly(vinyl alcohol) (PVA) polymers incorporated with (1:0), (0.75:0.25), (0.5:0.5), (0.25:0.75), and (0:1) content percentage ratios of ZnO-NPs: Al 2 O 3-NPs nanoparticles are reported. The optical properties...
Azobenzene has attracted substantial attention as a photoswitchable molecule due to its applications range from energy and data storage to biomedical applications. This work reports a new type of thin-film based on azobenzene derivative anchored to Cerium oxide nanoparticles CeO2 NPs for photoswitching applications. The trans - cis isomerization an...