In this work, iron oxide "gamma phase" (γ-Fe2O3)-silver oxide (Ag2O) nanocomposite is prepared by a double hydrothermal method combined with Punicaceae plant extract as reducing agents. X-ray diffraction (XRD) results confirmed the presence of γ-Fe2O3 and Ag2O and delafossite silver ferrite (AgFeO2) phases. Field Emission Scanning Electron Microscopy-energy dispersive spectroscopy (FESEMEDS) results revealed nanoparticles (NPs) with a shape like a cauliflower plant. Furthermore, the anti-bacterial activity results presented high inhibition rates against Klebsiella pneumoniae, Staphylococcus aureus, Staphylococcus epidermidis, Escherichia coli, and Candida albicans. The present study exhibits a new approach to the preparation of metal oxides using a facile and inexpensive method.

In this paper influence of laser energy on the emission spectrum of laser copper-interaction and plasma parameter for plasma Copper by used a first harmonic generated wavelength of Nd:YAG exaction source. The metal plasma that had detection by HR4000 detection system (ocean optics) was use to different excited. plasma temperature via the Boltzmann plot diagram with measuring the electron density number by McWhirter CRITERION. Values of measuring (Ne), (Te) found between (61178776 K°) and (Ne) is (1.77*1015, 2.01*1015 cm−3) at 1064nm.

In the present work, the optical emission spectra of Copper (Cu) plasma have been recorded and analyzed using the Laser Induced Breakdown Spectroscopy technique (LIBS). The emission line intensities and plasma parameters were investigated as a function of laser energy. The electron number density (ne) and electron Temperature (T e ) were determined using the Boltzmann plot method and McWhirter criterion. Measured values of n e and T e are in the range of 9323 K-11871 K k and (n e ) is 2.3×10 16 -2.6×10 16 cmG 3 at the fundamental wavelength (1064 nm).

ITO/ Si gas sensor were fabricated by an efficient and size -controlled by using DC-Sputtering technique suitable for large deposition area and high quality thin films. Structural, optical and electrical properties of ITO thin films were investigated and analyzed extensively under different doping concentration. Structure and surface morphology of ITO thin films were characterized by X-ray diffraction, Atomic Force Microscope. XRD technique that showed these films is polycrystalline structure with a preferred orientation of ( 222),( 440),(400) the best orientation plain is (222) These been found crystalline size decrease with increasing doping concentration. The optical properties of ITO thin films were studied such as transmissions, energy gap The transmittance was measured in the wavelength range from(300nm to 900 nm) for all the films was highly transparent (greater than 85%). The optical energy band gap was increase with doping concentration in range from (3.9 to 4.15) eV. The electrical properties for ITO thin films include D.C electrical conductivity and Hall effect which shows that the type of films is (n-type), and the film has two activation energies in the rang (305-355)K, and the resistivity increase with doping concentration at 8wt%.

This article focused on the OES (optical emission spectra) for silver (Ag) plasma by the stimulate of laser breakdown spectroscopy process. The intensities of emission line also parameters for plasma were measured in order to detect the specific relation of laser pulse energies. Density number of electron (ne), as well temperature (Te) have been calculated by Blotzmann polt process either by McWhirter criterion. Measured values of (ne) and (Te) are in the range of (6064 to 4507K) and (ne) is (2.3x1017 to 3.7x1017 cm-3) at the fundamental wavelength (1064nm), and for case of (Ag- bulk) the value of electron temperature was (6564, 5228 to 4507 K) The number of electron density (9.36x1016 to 1.19x1017cm-3). The common trends of the results are the temperature of electron (Te) leads to increase precipitously due to the increase of laser pulse energy. Since, as the energy increases the electrons density increases.