The aim of this work is to prepared porcelain with high mechanical and dielectric properties by using economical native raw materials without providing ideal high-cost conditions. The basic porcelain composition was selected ...

Superconducting Bi2Sr2Ca1Cu2O8 ceramics samples have been prepared by Sol-Gel methods.The influences of the preparation conditions of compound oxide powder on structural and superconducting properties have been investigated. ...

In this work, several parameters related to the ion implantation of antimony or arsenic, in silicon substrates have been studied. This study was realized experimentally and by simulation using suitable programs. Theoretically, ...

This work concerns a rigorous treatment by the Feynman path integral of a set containing four spherically symmetric quantum systems studied in the past by means of other ineffective methods. In the framework of ...

The goal of this thesis is to realize zinc oxide (ZnO) varistors doped with cobalt (Co) from nanosized powders, in order to explore the relationship between the reduction in particle size and the varistor effect. To do ...

The present work consists in the elaboration and characterization of the undoped and cadmium-doped ZnO with different concentrations of cadmium (Cd) (1, 2, 5 and 10% in weight) thin films in order to improve the structural ...

Among the most promising quaternary semiconductors for thin film solar cells fabrication is the Cu2ZnSnS4 (CZTS) material. Our choice in this thesis, to elaborate the CZTS thin films was related to the spray pyrolysis ...

The majority of materials mechanical properties are due to the crystalline defects interactions, in particular the interaction between dislocations and interfaces. The interaction energy between a dislocation and an ...

"Solar distillation is an interesting solution for the supply of drinking water in arid and / or isolated areas. However, the production of conventional solar stills remains insufficient. Therefore, and in order to improve ...

We have used the pseudo-potential and plan wave method (PP-PW) based on density functional theory (DFT) to examine the physical and mechanical properties of dental ceramics systems based on the crystals Li2Si2O5, Ca5(PO4)3F ...