Cupric oxide (CuO) films were deposited on MgO (1 0 0) substrates by two different pulsed laser deposition (PLD) configurations, molecular gas background and RF-plasma assisted, at temperatures over 250–450 °C range. The films were characterized by X-ray diffraction (XRD), reflection of high energy electron diffraction (RHEED), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), ellipsometery, and four probe conductivity measurements.

Luminescent mesoporous Tb(OH)3@SiO2 core-shell nanospheres were synthesized through W/O microemulsion
process at ambient temperature. The negatively charged silica favors a coating of the positively charged Tb3+
composite. Thus, silicon layer was adsorbed on the surface of Tb(OH)3 groups to form Tb-O-Si through electrostatic
interaction. X-ray diffraction, field emission transmission electron microscopy (FE-TEM), energy-dispersive X-ray
spectrometry, and Fourier transform infrared, UV/Visible, and photoluminescence spectroscopies were applied to

Cadmium oxide (CdO) nanoparticles were prepared starting from organometallic cis-[dmphen-CdI2] complex (dmphen = 2,9-Dimethyl-1,10-phenanthroline) through one step calcination process at 800 oC, the thermal behavior of the complex during calcination was recorded by TGA/DTA. The obtained product are analyzed by FT-IR, UV-visible, X-ray diffractometer (XRD), EDS, SEM and TEM, the average size of CdO nanoparticles found to be 50 nm. 

The spectral properties of CdSe/ZnS core–shell quantum dots (QDs) of 3 nm size have been studied under different organic solvents, concentrations and temperatures. Our results showed that the absorption spectra of CdSe/ZnS in benzene have two humps; one around 420 nm and another at 525 nm, with a steady increase in absorption along UV region, and the absorption spectral profile under a wide range of concentrations did not change. On the other hand, the photoluminescence (PL) spectra of CdSe/ZnS in benzene showed two bands one around 375 nm and the other around 550 nm.

In this paper, we report the structural and optical properties of Al doped ZnO (AZO) thin films grown on glass substrates using the sol–gel process. To understand the effect of Al doping on the structural and optical response of ZnO nanoparticles thin films, the prepared samples have been characterized using X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), high resolution transmission electron microscopy (HRTEM), photoluminescence (PL), UV–vis absorption and Raman spectroscopy.

[NiCl2(C14H12N2)(H2O)] complex has been synthesized from nickel chloride hexahydrate (NiCl2·6H2O) and 2,9-dimethyl-1,10-phenanthroline (dmphen) as N,N-bidentate ligand. The synthesized complex was characterized by elemental analysis, infrared (IR) spectroscopy, ultraviolet-visible (UV-vis) spectroscopy and differential thermal/thermogravimetric analysis (TG/DTA). The complex was further confirmed by single crystal X-ray diffraction (XRD) as triclinic with space group P-1.

In this study, a potato harvesting machine performance by studying the effect of the potato harvester operating variables on tuber damage was investigated. All field experiments were conducted at the premises of the National Agricultural Development Company (NADEC) located east of the city of Riyadh, in sandy loam soil by using long oval tubers in shape specifications (Hermes), along with one type of potato harvester (i.e., two-row potato harvester with two riddle chains).

ZnO Nano powders were prepared by co-precipitation method which includes post-oxidation and annealing in air. Influence of laser irradiation was carried out using 355 nm laser on the physical properties of ZnO nanoparticles. SEM studies reveal agglomeration of grains resulting into enlargement and deformation of the nanoparticles. XRD pattern exhibited decrease in FWHM which is a clear evidence of the increase in crystallite size due to laser irradiation. Optical properties showed decrease in the band gap of the laser irradiated Nano powders.

n this study, we investigate the dependence of laser induced plasma spectroscopy LIPS plasma characteristics on the nanostructured and bulk ZnO targets. This study was performed using 670 mJ of the fundamental wavelength of Nd:YAG laser energy and 5 ns pulse width focused normal to the surface of the sample. The analysis of the observed emission spectra revealed the zinc characteristic spectral lines with high resolution for both samples. It is found that the plasma electron temperature reaches values of 4131 ±5% Kelvin for bulk and 5107 ±5% Kelvin for nano - ZnO samples.

Luminescent porous silicon (Psi) fabricated by simple chemical etching technique in different organic solvents was studied. By quantifying the silicon wafer piece, optical properties of the Psi in solutions were investigated. Observation shows that no photoluminescence light of Psi in all solvents is emitted. Morphology of Psi in different solvents indicates that the structure and distribution of Psi are differently observed. Particles are uniformly dispersive with the sizes around more or less 5–8 nm.