Ahmed Naje Abd | AL-Mustansiriyah University (original) (raw)

Papers by Ahmed Naje Abd

International Journal of Engineering and Technologies, 2016

Nanoparticles NPSof cadmium oxide CdO were generated by laser ablation of a solid target (cadmium... more Nanoparticles NPSof cadmium oxide CdO were generated by laser ablation of a solid target (cadmium) in polyvinylpyrrolidone (PVP) solution. CdO colloidal nanoparticles have been synthesized by laser ablation Nd:YAG (1064 nm, 100 pulses, pulse energy= 400 mJ) when the solid target CdO was immersed in PVP. Structure, topography and optical properties of the CdO nanoparticles NPShave been studied using X-ray diffraction (XRD), atomic force microscope (AFM) and the UV-Vis absorption respectively.

The paper presents the effect of incorporating colloidal cadmium selenide nanoparticles on the ch... more The paper presents the effect of incorporating colloidal cadmium selenide nanoparticles on the characteristics of porous silicon Al/porous Si/ p -Si photodetectors prepared with 7 mA/cm 2 electrochemical etching for 15 min. The spherical cadmium selenide nanoparticles of size 35-60 nm, synthesized by laser ablation in methanol, had covered the pore walls of porous silicon matrix. Structural, morphological and optical properties of porous silicon and cadmium selenide nanoparticles were characterized by X-ray diffraction, photo-luminescence, Fourier transformation infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscopy and UV-Vis spectrophotometer. Electrical and photosensitivity of porous silicon photodetectors have been investigated before and after the embedding of cadmium selenide nanoparticles. The ideality factor of porous silicon has decreased after the incorporation of cadmium selenide nanoparticles in porous silicon. Phot...

PROCEEDING OF THE 1ST INTERNATIONAL CONFERENCE ON ADVANCED RESEARCH IN PURE AND APPLIED SCIENCE (ICARPAS2021): Third Annual Conference of Al-Muthanna University/College of Science

This research covers the bio preparation of cadmium oxide nanoparticles (CdO NPS) with the use of... more This research covers the bio preparation of cadmium oxide nanoparticles (CdO NPS) with the use of aqueous plant extracts from the Curcuma rhizome. Characterization of CdO NPs was performed using (XRD), UV-VIS spectroscopy, (FT-IR), (AFM), and (FE-SEM). The XRD technique has confirmed the crystallinity of CdO NPs with an average crystalline CdO NPs scale of 33,21nm. The optical bandgap of CdO NPs is 5.5 eV. The nanoparticle size of the particles is 571.32 nm as seen (FE-SEM) and the average diameter of CdO NPs is 70.41 nm as shown by AFM. CdO NPs is screened for antimicrobial activity against a variety of human pathogens, including Pseudomonas aeruginosa, Klebsiella pneumoniae, Staphylococcus aureus, Escherichia coli, Candida albicans, and Trichophyton rubrum using agar well diffusion. The anticancer efficacy of CdO NPs against human colon cells (HT-29) was tested using an MTT assay. The results showed that CdO nanoparticles demonstrated superior antibacterial activity in the area of antimicrobial strain inhibition. CdO NPs have shown substantial anticancer.

Journal of Nanostructures, 2020

Gold nanoparticles (AuNPs) were synthesis by electrolysis method as colloidal nanoparticles and d... more Gold nanoparticles (AuNPs) were synthesis by electrolysis method as colloidal nanoparticles and deposited on both glass substrates and p-type porous silicon(PSi) to prepare films by using drop casting method to improve the performance of PS/SI solar cell. PS was prepared by electrochemical etching process (ECE) for p-Si wafers. The optical properties of PS and AuNPs were examined. The structural and morphological properties for PSi and gold nanostructure (AuNSs) deposited on glass substrate have been studied by using (XRD) and Atomic Force Microscope (AFM) respectively. TEM testing for AuNPs was investigated. XRD pattern of PSi showed that it had single crystalline structure, whereas for Au nanostructure it was polycrystalline one. AFM confirmed the nanometric size of both AuNSs and PSi it was around 40 nm for AuNSs and 62 nm for PS. The AuNPs diffusion effect on the electrical properties of PS/Si heterojunction was studied . The photovoltaic characteristics of AuNPs/PS/Si/Al Solar ...

Journal of Physics: Conference Series

In this research, sulfur nanoparticles were prepared using the plant synthesis method, and the pa... more In this research, sulfur nanoparticles were prepared using the plant synthesis method, and the particles were identified through biological equipment for the purpose of adding them for application purposes. The structural, surface, and optical properties of S-NPs were investigated. Transmittance and band gap were calculated using an optical approach to explore the optical properties. Surface and structural properties of the film were investigated using SEM micrographs and an X-ray diffraction pattern, respectively. The antibacterial and antifungal potential of S-NPs has been identified after extensive research.

Natural materials are currently utilized in a wide scope of accuracy electronic applications in p... more Natural materials are currently utilized in a wide scope of accuracy electronic applications in parallel with inorganic materials, because of their unrivaled properties, ecological wellbeing and ease. This paper depicts the portrayal of the meager Aloe vera (AV) film, which is another natural froth. Surface morphology, spatial dissemination of components and auxiliary qualities of the AVG layer were inspected utilizing checking electron microscopy, vitality scattered X-beam spectroscopy (EDX) and Xbeam diffraction (XRD), individually. The EDX demonstrated that the components in the layer are C, O

The objective of this study was biosynthesis of titanium dioxide nanoparticles (TiO 2 NPs) using ... more The objective of this study was biosynthesis of titanium dioxide nanoparticles (TiO 2 NPs) using Curcuma longa aqueous extract and characterize them. Study their effect on the growth, sporulation, pathogenicity of Fusarium graminearum and some wheat plants parameters compared with standards industrials nanoparticles. C. longa aquatic extract was used to biosynthesis TiO 2 NPs by two methods. At first method, TiO 2 was found in both colloidal solutions (CS) and nanopawder while it found in jest nanopawder in second method. All biosynthetic nanoparticles were in nano size. It was: 91.37 nm, 76.36 nm of (CS) and nanopawder for first methods respectively while it was 92.6 nm of nanopawder in second method. All nanoparticles have good optical properties. Crystal's shape of nanopawder were in three form: anatase, rutilr and brookite and it was anatase in colloidal solutionat first method while it was pure anatase innanopawder when at second method. The average crystallite size of was calculate by Scherer's equation, it was 43.088 nm and 22.881 nm for nanopawder and colloidal solution respectively at first method. It was 45.808 nm for nanopawder at second method. All concentrations of nanoparticles were reduced fungal and spores. These decreasing were more effective using biosynthetic compare with industrial synthetic nanoparticles. There were reductions in dampingoff caused by F. graminearum by biosynthetic NBs in both varieties of plant (Al-Rasheed and Tamuze-2). These was better than the effect of industrial synthetic nanoparticles. The resistance to damping off and the growth of plant in Al-Rasheed variety was more sensitive compared with Tamuze-2 variety especially at higher concentrations. There were decrease in all plant's parameters at most concentrations of TiO 2 biological synthetic compare with industrial synthetic nanoparticles in Al-Rasheed variety, while there were inductions in some plant's parameters by biosynthetic nanoparticles World Scientific News 49(2) (2016) 204-222-205-compared with industrial synthetic in Tamuze-2 variety. Finally, C. longa can be used to biosynthesis TiO 2 NPs with good biological properties.

These work studies dependences of structural properties, mobility and charge carrier concentratio... more These work studies dependences of structural properties, mobility and charge carrier concentration on the thickness of nickel oxide (NiO) nano films deposited on glass substrates by RF reactive magnetron sputtering at an RF power 200 W. The X-ray diffraction (XRD) analyses of nickel oxide nano films indicates that these films are polycrystalline with preferred orientation along (200) plane, crystallite sizes increased from 22.894 nm, to 25.035 nm when the film thickness increase from 50 nm to 150 nm. The microstrain (ε) and dislocation density (δ) decrease as the thickness increases. The average roughness increased from 2.055 nm to 3.191 nm as the thickness increasing. The resistivity of NiO film is increased with an increase in film thickness, which is related to the decrease of carrier concentration with film thickness. The NiO film with a thickness of 150 nm has a maximum resistivity of 50.92 KΩ.cm Keywords—Nickel oxide films; reactive Sputtering; XRD; Structure; Electrical prope...

Porous silicon (PS) layer was produced by photochemical etching process at (5, 7, 10, 12 and 15) ... more Porous silicon (PS) layer was produced by photochemical etching process at (5, 7, 10, 12 and 15) etching time and 7 mA/cm current density then after investigation by Atomic Force Microscope (AFM) the thickness of PS layer from about 3.4 μm to 15.8 μm was determined. The surface of porous silicon is formed from small pyramids with porous structure, where the porosity of n-PS is from ≈ (3272%). Porous silicon layer formed on the silicon substrates by photochemical etching contains also the nanopores with diameter about 16.41-42 nm in current density (7 mA/cm). The porosity and thickness was determined from AFM results and compared with the result from the usually measured porosity and thickness through a gravimetric method we found that the values of porosity and thickness calculated from two methods are approximately similar to each other with few difference, the influence of structure changes on optical properties such as refractive index, which decreases exponentially with porosity.

The physico – chemical changes induced in polymers following to radiation can be studied by a ran... more The physico – chemical changes induced in polymers following to radiation can be studied by a range of spectroscopic techniques. Recent developments in instrumentation and data analysis procedures in electronic, vibrational and magnetic resonance spectroscopes have provided considerable new insights, into polymer structure and behavior. The applications of these spectroscopic methods in polymer studies are reviewed with emphasis on their utility in investigations of radiation effects on macromolecules.

Materials Today: Proceedings, 2021

Gold nanoparticles (AuNPs) were synthesis by electrolysis method as colloidal nanoparticles and d... more Gold nanoparticles (AuNPs) were synthesis by electrolysis method as colloidal nanoparticles and deposited on both glass substrates and p-type porous silicon (PS) to prepare films by using drop casting method to improve the performance of PS/Si solar cell. PS was prepared by electrochemical etching process (ECE) for p-Si wafers. The optical properties of PS and AuNPs were examined. The structural and morphological properties for PSi and gold nanostructure (AuNSs) deposited on glass substrate have been studied by using (XRD) and Atomic Force Microscope (AFM) respectively. TEM testing for AuNPs was investigated. XRD pattern of PS showed that it had single crystalline structure, whereas for Au nanostructure it was polycrystalline one. AFM confirmed the nanometric size of both AuNSs and PSi it was around 40 nm for AuNSs and 62 nm for PS. The AuNPs diffusion effect on the electrical properties of PS/Si heterojunction was studied. The photovoltaic characteristics of AuNPs/PS/Si/Al Solar ce...

This studies pCuO / n Si heterojunction was deposited by high vacuum thermal evaporation of Coppe... more This studies pCuO / n Si heterojunction was deposited by high vacuum thermal evaporation of Copper subjected to thermal oxidation at 300 o C on silicon. Surface morphology properties of The optical properties concerning the transmission spectra were studies for prepared thin films. this structure have been studied. XRD anaylsis discover that the peak at (111) and (111) plane are take over for the crystal quality of the CuO films. The band gap of CuO films is found to be 1.54 eV. The average grain size of is measured from AFM analysis is around 14.70 nm. The responsivity photodetector after deposited CuO appear increasing in response. Keywords—CuO, structure properties, AFM, optical properties, solar cell .

The aim of this paper is to study the properties of copper oxide thin films prepared by electroly... more The aim of this paper is to study the properties of copper oxide thin films prepared by electrolysis method and deposited on glass substrates by drop-casting method at different annealing temperatures. Copper oxide colloidal was successfully prepared by electrolysis method. The X-ray diffraction confirms the polycrystalline structure of the films. Atomic force microscopy shows that the increase in the annealing temperature improves the surface morphology, increases the grain size and removes the cracks. The best optical transmittance was for the film annealed at 200 oC. The bandgap decreases from 3.35 eV to 3.15 eV as a result of increasing the annealing temperature. The wide bandgap that obtained in this study is due to quantum size effect.

The house fly (Musca domestica L.) is a common pest of human and animals and is also a vector of ... more The house fly (Musca domestica L.) is a common pest of human and animals and is also a vector of both human and animal diseases. Cordia myxa plant is one of the species of genus Cordia, family Because there are indications to contain effective compounds against insects have chosen as a means instead of manufacture chemical. Recently nanoparticle have shown promise in many fields of agriculture including pest management. In this article treatment pupa (age24 and 72 hours ) of house fly by mix concentrations from cadmium oxide nanoparticles and crude fruit extract of Cordia myxa in ratio 1:1 and 1:4 .

The optical and structure properties of Cadmium oxide (CdO) thin film prepared by electrochemical... more The optical and structure properties of Cadmium oxide (CdO) thin film prepared by electrochemical deposition method at different times (15, 30 and 60) min were investigated in this paper. Results of optical Transmission, absorption, reflection spectra, optical conductance, refractive index, extension coefficient, real and imaginary dielectric constants studies are reported. The optical transmittance of the CdO thin film which formed at room temperature was 20% at wavelength ≈350 nm then increases to 60% at wavelength ≈1100 nm for thin film of CdO. The band-gap was also calculated from the equation relating absorption coefficient with the wavelength. The energy band gap changes from 2.3eV (Bulk CdO) to 2.45eV (CdO thin film). The plotted graphs show the optical characteristics of the film which varied with the wavelength and the photon energy. The optical conductance and band-gap indicated that the film is transmitting within the visible range. The dielectric constant and optical con...

In this study, (50 110) nm cadmium oxide (CdO) nanoparticles were synthesized by chemical method.... more In this study, (50 110) nm cadmium oxide (CdO) nanoparticles were synthesized by chemical method. The optical, structural and topographical properties of the synthesized nanoparticles were investigated by using UV-VIS absorption, Transmission electron microscopy TEM, atomic force microscopy AFM, and x-ray diffraction XRD. The bacterial resistance represents a problem and the outlook for the use of antibiotics in the future is still uncertain. Therefore, it must be taken measures to reduce this problem. Antibacterial activity of the Cadmium oxide nanoparticles were investigated against several pathogenic bacteria, including Klebsiella pneumoniae; Acinetobacter baumannii; Pseudomonas aeruginosa and Staphylococcus aureus by using well diffusion method ,the results showed that Cadmium nanoparticles had inhibitory effect against all pathogenic bacteria with inhibition zone (18 ,18 ,14 and 17 mm) for S. aureus, K. pneumonia, A. baumannii and P.aeruginosa respect-tively. CdO nanoparticles ...

In this research, ZnO nanostructure have been prepared from colloidal ZnO nanoparticles NPs utili... more In this research, ZnO nanostructure have been prepared from colloidal ZnO nanoparticles NPs utilizing chemical method. The structural, morphological and optical of ZnO thin film has been studied. XRD anaylsis assure that the ZnO thin film were of wurtzite hexagonal crystal structure. AFM investigations showed that the produced ZnO particles have ball-shape with good disposability. The optical energy band gap of ZnO thin film has been determined from optical properties and found to be in the range (3.2 eV). Al/ZnO/Si/Al photodetector heterojunction have two peaks of response located at 415 nm and 780 nm with max sensitivity of 0.6 A/W. Keywords—ZnO nanoparticle , optical properties, structural properties, 1Introduction :Significant research efforts have been made in recent years for developing highly oriented and transparent ZnO thin films, because of their potential application in transparent electrode in display, window layers of solar cells, field emitters, ultraviolet laser emiss...

International Letters of Chemistry, Physics and Astronomy, 2019

This study includes the effect of the etching time on the morphology of the surfaces produced usi... more This study includes the effect of the etching time on the morphology of the surfaces produced using the electrochemical method of silicon ( p-type), where it was found that the etching leads to increase the porosity layer of silicon. The production of nanocrystalline structures and control of their production conditions is the first step to control the properties of the devices. These are very important applications for the etching of renewable energy.

Journal of Physics: Conference Series, 2019

Nickel oxide was prepared using the chemical method. Li-doped NiO thin films with concentrations ... more Nickel oxide was prepared using the chemical method. Li-doped NiO thin films with concentrations (0.04) was deposited on glass substrate using drop casting technique with thickness 150nm, and then the annealing at 300 ° C for 60 sec. The effect of the lithium doping on the structural and optical properties of Li: NiO films were examined. The structure of the prepared films were described by x-ray diffraction (XRD) and Atomic Force Microscopy (AFM). The results of X-ray pattern showed the NiO and Li: NiO films to have a polycrystalline structure of a cubic type and preferred orientation (111). (AFM) data indicated that the structure was nanoscale and surface of the films is highly smooth. The study of optical properties included the transmittance spectrum of the prepared films of the wavelengths of (300-900) nm , It was found that the transmittance of pure nickel oxide is 79% in the visible area after doping by Li The transmittance decreases and the absorption increases. The energy gap was also calculated and found to be decreasing by increasing the doping concentration. Other important optical properties of the absorption coefficient and extinction coefficient were calculated. The electrical properties of the prepared films were studied, It was found that the concentration of the carriers increases with increasing doping concentration and mobility decreases. The thin films were deposited on a substrate of FTO to make of schottky diode. The characteristics of I-V, C-V were studied. A solar cell was found the efficiency of the cell was increased by doping.

Journal of Physics: Conference Series, 2019

The aim of this research is to study the effect of annealing on the physical properties of CdO:Ni... more The aim of this research is to study the effect of annealing on the physical properties of CdO:NiO thin film. In this research, cadmium oxide (CdO) and Nickel oxide (NiO) nanoparticles were synthesized by chemical method. The optical, structural and topographical properties of the synthesized nanoparticles were investigated by using UV-VIS measurement, The plotted graphs show the optical characteristics of the films which varied with the wavelength and the photon energy, atomic force microscopy AFM, The structure of synthesized CdO and NiO thin films was analyzed by X-ray diffraction XRD which revealed that the CdO and NiO thin films are polycrystalline and have several peaks of cubic face structure. The crystallite size, dislocation density and microstrain of the thin films were calculated and listed. the same procedures are also calculated and included. CdO:NiO Nanofluorocarbons were synthesized by mixing% by weight (CdO and NiO).

International Journal of Engineering and Technologies, 2016

Nanoparticles NPSof cadmium oxide CdO were generated by laser ablation of a solid target (cadmium... more Nanoparticles NPSof cadmium oxide CdO were generated by laser ablation of a solid target (cadmium) in polyvinylpyrrolidone (PVP) solution. CdO colloidal nanoparticles have been synthesized by laser ablation Nd:YAG (1064 nm, 100 pulses, pulse energy= 400 mJ) when the solid target CdO was immersed in PVP. Structure, topography and optical properties of the CdO nanoparticles NPShave been studied using X-ray diffraction (XRD), atomic force microscope (AFM) and the UV-Vis absorption respectively.

The paper presents the effect of incorporating colloidal cadmium selenide nanoparticles on the ch... more The paper presents the effect of incorporating colloidal cadmium selenide nanoparticles on the characteristics of porous silicon Al/porous Si/ p -Si photodetectors prepared with 7 mA/cm 2 electrochemical etching for 15 min. The spherical cadmium selenide nanoparticles of size 35-60 nm, synthesized by laser ablation in methanol, had covered the pore walls of porous silicon matrix. Structural, morphological and optical properties of porous silicon and cadmium selenide nanoparticles were characterized by X-ray diffraction, photo-luminescence, Fourier transformation infrared spectroscopy, scanning electron microscopy, transmission electron microscopy, atomic force microscopy and UV-Vis spectrophotometer. Electrical and photosensitivity of porous silicon photodetectors have been investigated before and after the embedding of cadmium selenide nanoparticles. The ideality factor of porous silicon has decreased after the incorporation of cadmium selenide nanoparticles in porous silicon. Phot...

PROCEEDING OF THE 1ST INTERNATIONAL CONFERENCE ON ADVANCED RESEARCH IN PURE AND APPLIED SCIENCE (ICARPAS2021): Third Annual Conference of Al-Muthanna University/College of Science

This research covers the bio preparation of cadmium oxide nanoparticles (CdO NPS) with the use of... more This research covers the bio preparation of cadmium oxide nanoparticles (CdO NPS) with the use of aqueous plant extracts from the Curcuma rhizome. Characterization of CdO NPs was performed using (XRD), UV-VIS spectroscopy, (FT-IR), (AFM), and (FE-SEM). The XRD technique has confirmed the crystallinity of CdO NPs with an average crystalline CdO NPs scale of 33,21nm. The optical bandgap of CdO NPs is 5.5 eV. The nanoparticle size of the particles is 571.32 nm as seen (FE-SEM) and the average diameter of CdO NPs is 70.41 nm as shown by AFM. CdO NPs is screened for antimicrobial activity against a variety of human pathogens, including Pseudomonas aeruginosa, Klebsiella pneumoniae, Staphylococcus aureus, Escherichia coli, Candida albicans, and Trichophyton rubrum using agar well diffusion. The anticancer efficacy of CdO NPs against human colon cells (HT-29) was tested using an MTT assay. The results showed that CdO nanoparticles demonstrated superior antibacterial activity in the area of antimicrobial strain inhibition. CdO NPs have shown substantial anticancer.

Journal of Nanostructures, 2020

Gold nanoparticles (AuNPs) were synthesis by electrolysis method as colloidal nanoparticles and d... more Gold nanoparticles (AuNPs) were synthesis by electrolysis method as colloidal nanoparticles and deposited on both glass substrates and p-type porous silicon(PSi) to prepare films by using drop casting method to improve the performance of PS/SI solar cell. PS was prepared by electrochemical etching process (ECE) for p-Si wafers. The optical properties of PS and AuNPs were examined. The structural and morphological properties for PSi and gold nanostructure (AuNSs) deposited on glass substrate have been studied by using (XRD) and Atomic Force Microscope (AFM) respectively. TEM testing for AuNPs was investigated. XRD pattern of PSi showed that it had single crystalline structure, whereas for Au nanostructure it was polycrystalline one. AFM confirmed the nanometric size of both AuNSs and PSi it was around 40 nm for AuNSs and 62 nm for PS. The AuNPs diffusion effect on the electrical properties of PS/Si heterojunction was studied . The photovoltaic characteristics of AuNPs/PS/Si/Al Solar ...

Journal of Physics: Conference Series

In this research, sulfur nanoparticles were prepared using the plant synthesis method, and the pa... more In this research, sulfur nanoparticles were prepared using the plant synthesis method, and the particles were identified through biological equipment for the purpose of adding them for application purposes. The structural, surface, and optical properties of S-NPs were investigated. Transmittance and band gap were calculated using an optical approach to explore the optical properties. Surface and structural properties of the film were investigated using SEM micrographs and an X-ray diffraction pattern, respectively. The antibacterial and antifungal potential of S-NPs has been identified after extensive research.

Natural materials are currently utilized in a wide scope of accuracy electronic applications in p... more Natural materials are currently utilized in a wide scope of accuracy electronic applications in parallel with inorganic materials, because of their unrivaled properties, ecological wellbeing and ease. This paper depicts the portrayal of the meager Aloe vera (AV) film, which is another natural froth. Surface morphology, spatial dissemination of components and auxiliary qualities of the AVG layer were inspected utilizing checking electron microscopy, vitality scattered X-beam spectroscopy (EDX) and Xbeam diffraction (XRD), individually. The EDX demonstrated that the components in the layer are C, O

The objective of this study was biosynthesis of titanium dioxide nanoparticles (TiO 2 NPs) using ... more The objective of this study was biosynthesis of titanium dioxide nanoparticles (TiO 2 NPs) using Curcuma longa aqueous extract and characterize them. Study their effect on the growth, sporulation, pathogenicity of Fusarium graminearum and some wheat plants parameters compared with standards industrials nanoparticles. C. longa aquatic extract was used to biosynthesis TiO 2 NPs by two methods. At first method, TiO 2 was found in both colloidal solutions (CS) and nanopawder while it found in jest nanopawder in second method. All biosynthetic nanoparticles were in nano size. It was: 91.37 nm, 76.36 nm of (CS) and nanopawder for first methods respectively while it was 92.6 nm of nanopawder in second method. All nanoparticles have good optical properties. Crystal's shape of nanopawder were in three form: anatase, rutilr and brookite and it was anatase in colloidal solutionat first method while it was pure anatase innanopawder when at second method. The average crystallite size of was calculate by Scherer's equation, it was 43.088 nm and 22.881 nm for nanopawder and colloidal solution respectively at first method. It was 45.808 nm for nanopawder at second method. All concentrations of nanoparticles were reduced fungal and spores. These decreasing were more effective using biosynthetic compare with industrial synthetic nanoparticles. There were reductions in dampingoff caused by F. graminearum by biosynthetic NBs in both varieties of plant (Al-Rasheed and Tamuze-2). These was better than the effect of industrial synthetic nanoparticles. The resistance to damping off and the growth of plant in Al-Rasheed variety was more sensitive compared with Tamuze-2 variety especially at higher concentrations. There were decrease in all plant's parameters at most concentrations of TiO 2 biological synthetic compare with industrial synthetic nanoparticles in Al-Rasheed variety, while there were inductions in some plant's parameters by biosynthetic nanoparticles World Scientific News 49(2) (2016) 204-222-205-compared with industrial synthetic in Tamuze-2 variety. Finally, C. longa can be used to biosynthesis TiO 2 NPs with good biological properties.

These work studies dependences of structural properties, mobility and charge carrier concentratio... more These work studies dependences of structural properties, mobility and charge carrier concentration on the thickness of nickel oxide (NiO) nano films deposited on glass substrates by RF reactive magnetron sputtering at an RF power 200 W. The X-ray diffraction (XRD) analyses of nickel oxide nano films indicates that these films are polycrystalline with preferred orientation along (200) plane, crystallite sizes increased from 22.894 nm, to 25.035 nm when the film thickness increase from 50 nm to 150 nm. The microstrain (ε) and dislocation density (δ) decrease as the thickness increases. The average roughness increased from 2.055 nm to 3.191 nm as the thickness increasing. The resistivity of NiO film is increased with an increase in film thickness, which is related to the decrease of carrier concentration with film thickness. The NiO film with a thickness of 150 nm has a maximum resistivity of 50.92 KΩ.cm Keywords—Nickel oxide films; reactive Sputtering; XRD; Structure; Electrical prope...

Porous silicon (PS) layer was produced by photochemical etching process at (5, 7, 10, 12 and 15) ... more Porous silicon (PS) layer was produced by photochemical etching process at (5, 7, 10, 12 and 15) etching time and 7 mA/cm current density then after investigation by Atomic Force Microscope (AFM) the thickness of PS layer from about 3.4 μm to 15.8 μm was determined. The surface of porous silicon is formed from small pyramids with porous structure, where the porosity of n-PS is from ≈ (3272%). Porous silicon layer formed on the silicon substrates by photochemical etching contains also the nanopores with diameter about 16.41-42 nm in current density (7 mA/cm). The porosity and thickness was determined from AFM results and compared with the result from the usually measured porosity and thickness through a gravimetric method we found that the values of porosity and thickness calculated from two methods are approximately similar to each other with few difference, the influence of structure changes on optical properties such as refractive index, which decreases exponentially with porosity.

The physico – chemical changes induced in polymers following to radiation can be studied by a ran... more The physico – chemical changes induced in polymers following to radiation can be studied by a range of spectroscopic techniques. Recent developments in instrumentation and data analysis procedures in electronic, vibrational and magnetic resonance spectroscopes have provided considerable new insights, into polymer structure and behavior. The applications of these spectroscopic methods in polymer studies are reviewed with emphasis on their utility in investigations of radiation effects on macromolecules.

Materials Today: Proceedings, 2021

Gold nanoparticles (AuNPs) were synthesis by electrolysis method as colloidal nanoparticles and d... more Gold nanoparticles (AuNPs) were synthesis by electrolysis method as colloidal nanoparticles and deposited on both glass substrates and p-type porous silicon (PS) to prepare films by using drop casting method to improve the performance of PS/Si solar cell. PS was prepared by electrochemical etching process (ECE) for p-Si wafers. The optical properties of PS and AuNPs were examined. The structural and morphological properties for PSi and gold nanostructure (AuNSs) deposited on glass substrate have been studied by using (XRD) and Atomic Force Microscope (AFM) respectively. TEM testing for AuNPs was investigated. XRD pattern of PS showed that it had single crystalline structure, whereas for Au nanostructure it was polycrystalline one. AFM confirmed the nanometric size of both AuNSs and PSi it was around 40 nm for AuNSs and 62 nm for PS. The AuNPs diffusion effect on the electrical properties of PS/Si heterojunction was studied. The photovoltaic characteristics of AuNPs/PS/Si/Al Solar ce...

This studies pCuO / n Si heterojunction was deposited by high vacuum thermal evaporation of Coppe... more This studies pCuO / n Si heterojunction was deposited by high vacuum thermal evaporation of Copper subjected to thermal oxidation at 300 o C on silicon. Surface morphology properties of The optical properties concerning the transmission spectra were studies for prepared thin films. this structure have been studied. XRD anaylsis discover that the peak at (111) and (111) plane are take over for the crystal quality of the CuO films. The band gap of CuO films is found to be 1.54 eV. The average grain size of is measured from AFM analysis is around 14.70 nm. The responsivity photodetector after deposited CuO appear increasing in response. Keywords—CuO, structure properties, AFM, optical properties, solar cell .

The aim of this paper is to study the properties of copper oxide thin films prepared by electroly... more The aim of this paper is to study the properties of copper oxide thin films prepared by electrolysis method and deposited on glass substrates by drop-casting method at different annealing temperatures. Copper oxide colloidal was successfully prepared by electrolysis method. The X-ray diffraction confirms the polycrystalline structure of the films. Atomic force microscopy shows that the increase in the annealing temperature improves the surface morphology, increases the grain size and removes the cracks. The best optical transmittance was for the film annealed at 200 oC. The bandgap decreases from 3.35 eV to 3.15 eV as a result of increasing the annealing temperature. The wide bandgap that obtained in this study is due to quantum size effect.

The house fly (Musca domestica L.) is a common pest of human and animals and is also a vector of ... more The house fly (Musca domestica L.) is a common pest of human and animals and is also a vector of both human and animal diseases. Cordia myxa plant is one of the species of genus Cordia, family Because there are indications to contain effective compounds against insects have chosen as a means instead of manufacture chemical. Recently nanoparticle have shown promise in many fields of agriculture including pest management. In this article treatment pupa (age24 and 72 hours ) of house fly by mix concentrations from cadmium oxide nanoparticles and crude fruit extract of Cordia myxa in ratio 1:1 and 1:4 .

The optical and structure properties of Cadmium oxide (CdO) thin film prepared by electrochemical... more The optical and structure properties of Cadmium oxide (CdO) thin film prepared by electrochemical deposition method at different times (15, 30 and 60) min were investigated in this paper. Results of optical Transmission, absorption, reflection spectra, optical conductance, refractive index, extension coefficient, real and imaginary dielectric constants studies are reported. The optical transmittance of the CdO thin film which formed at room temperature was 20% at wavelength ≈350 nm then increases to 60% at wavelength ≈1100 nm for thin film of CdO. The band-gap was also calculated from the equation relating absorption coefficient with the wavelength. The energy band gap changes from 2.3eV (Bulk CdO) to 2.45eV (CdO thin film). The plotted graphs show the optical characteristics of the film which varied with the wavelength and the photon energy. The optical conductance and band-gap indicated that the film is transmitting within the visible range. The dielectric constant and optical con...

In this study, (50 110) nm cadmium oxide (CdO) nanoparticles were synthesized by chemical method.... more In this study, (50 110) nm cadmium oxide (CdO) nanoparticles were synthesized by chemical method. The optical, structural and topographical properties of the synthesized nanoparticles were investigated by using UV-VIS absorption, Transmission electron microscopy TEM, atomic force microscopy AFM, and x-ray diffraction XRD. The bacterial resistance represents a problem and the outlook for the use of antibiotics in the future is still uncertain. Therefore, it must be taken measures to reduce this problem. Antibacterial activity of the Cadmium oxide nanoparticles were investigated against several pathogenic bacteria, including Klebsiella pneumoniae; Acinetobacter baumannii; Pseudomonas aeruginosa and Staphylococcus aureus by using well diffusion method ,the results showed that Cadmium nanoparticles had inhibitory effect against all pathogenic bacteria with inhibition zone (18 ,18 ,14 and 17 mm) for S. aureus, K. pneumonia, A. baumannii and P.aeruginosa respect-tively. CdO nanoparticles ...

In this research, ZnO nanostructure have been prepared from colloidal ZnO nanoparticles NPs utili... more In this research, ZnO nanostructure have been prepared from colloidal ZnO nanoparticles NPs utilizing chemical method. The structural, morphological and optical of ZnO thin film has been studied. XRD anaylsis assure that the ZnO thin film were of wurtzite hexagonal crystal structure. AFM investigations showed that the produced ZnO particles have ball-shape with good disposability. The optical energy band gap of ZnO thin film has been determined from optical properties and found to be in the range (3.2 eV). Al/ZnO/Si/Al photodetector heterojunction have two peaks of response located at 415 nm and 780 nm with max sensitivity of 0.6 A/W. Keywords—ZnO nanoparticle , optical properties, structural properties, 1Introduction :Significant research efforts have been made in recent years for developing highly oriented and transparent ZnO thin films, because of their potential application in transparent electrode in display, window layers of solar cells, field emitters, ultraviolet laser emiss...

International Letters of Chemistry, Physics and Astronomy, 2019

This study includes the effect of the etching time on the morphology of the surfaces produced usi... more This study includes the effect of the etching time on the morphology of the surfaces produced using the electrochemical method of silicon ( p-type), where it was found that the etching leads to increase the porosity layer of silicon. The production of nanocrystalline structures and control of their production conditions is the first step to control the properties of the devices. These are very important applications for the etching of renewable energy.

Journal of Physics: Conference Series, 2019

Nickel oxide was prepared using the chemical method. Li-doped NiO thin films with concentrations ... more Nickel oxide was prepared using the chemical method. Li-doped NiO thin films with concentrations (0.04) was deposited on glass substrate using drop casting technique with thickness 150nm, and then the annealing at 300 ° C for 60 sec. The effect of the lithium doping on the structural and optical properties of Li: NiO films were examined. The structure of the prepared films were described by x-ray diffraction (XRD) and Atomic Force Microscopy (AFM). The results of X-ray pattern showed the NiO and Li: NiO films to have a polycrystalline structure of a cubic type and preferred orientation (111). (AFM) data indicated that the structure was nanoscale and surface of the films is highly smooth. The study of optical properties included the transmittance spectrum of the prepared films of the wavelengths of (300-900) nm , It was found that the transmittance of pure nickel oxide is 79% in the visible area after doping by Li The transmittance decreases and the absorption increases. The energy gap was also calculated and found to be decreasing by increasing the doping concentration. Other important optical properties of the absorption coefficient and extinction coefficient were calculated. The electrical properties of the prepared films were studied, It was found that the concentration of the carriers increases with increasing doping concentration and mobility decreases. The thin films were deposited on a substrate of FTO to make of schottky diode. The characteristics of I-V, C-V were studied. A solar cell was found the efficiency of the cell was increased by doping.

Journal of Physics: Conference Series, 2019

The aim of this research is to study the effect of annealing on the physical properties of CdO:Ni... more The aim of this research is to study the effect of annealing on the physical properties of CdO:NiO thin film. In this research, cadmium oxide (CdO) and Nickel oxide (NiO) nanoparticles were synthesized by chemical method. The optical, structural and topographical properties of the synthesized nanoparticles were investigated by using UV-VIS measurement, The plotted graphs show the optical characteristics of the films which varied with the wavelength and the photon energy, atomic force microscopy AFM, The structure of synthesized CdO and NiO thin films was analyzed by X-ray diffraction XRD which revealed that the CdO and NiO thin films are polycrystalline and have several peaks of cubic face structure. The crystallite size, dislocation density and microstrain of the thin films were calculated and listed. the same procedures are also calculated and included. CdO:NiO Nanofluorocarbons were synthesized by mixing% by weight (CdO and NiO).