Chapter 1: Computational Research in Condensed Matter PhysicsFirst-Principle Study of the Thermodynamic Properties of VSb2 Compound as a Function of Pressure and TemperatureEffect of the Introduction of a Staircase Defect on the Behavior of the Induced Electronic State in a MQWs StructureOne-Dimensional Photonic Serial Asymmetric Loops Structure Containing Three DefectsStudy of the Electronic Defect States of One-Dimensional Comb-like Quantum Wires Structure with Resonator Defect by Using the Transfer Matrix MethodSize Effect of Hemi-Toroidal Quantum Dot on the Electronic Properties in the Presence of an Off-Center Hydrogenic Shallow Donor ImpurityChapter 2: Technology of Pulsed Laser DepositionStudy the Influence of CNTs Deposited by Laser on the Surface of Al 2024 AlloyUsing the PLD Method: Investigation of the Influence of Laser Wavelengths on the Optical Morphological and Structural Findings of LiNbO3 Nano-Photonic FilmsVisible Ranges Photo Detector Fabricated Based on Nano Copper Oxide Deposited by Reactive Pulsed Laser DepositionFabrication of Solar Cell Based on Copper Oxide Nanostructures Deposited Using Reactive Pulsed Laser DepositionOptical and Photolumenance Studies of Deposited CuO2 Nano-Structures at Different Laser Energies EffectsLaser Energies Effects on Physical Properties of CuO2 Nano-StructuresChapter 3: Materials Failures and Damage AnalysisPole Figure Analysis of Graphite MaterialInvestigation of Cracks on Internal Surfaces of Extruded Cold Worked Thick Walled Pipes of an Age Hardened Al-AlloyAnalysis of Malfunctioning of Centrifugal Compressor of Starter Engine of an AircraftImpurity Driven Embrittlement in AISI 1020 Steel during Thermal TreatmentsCase Study of PVC Cables Exposed in Accelerated Thermal and Radiation EnvironmentEutectic Si Accumulation in Liquid Forged A356 Alloy Wheel and its Adverse Effect on Tensile Fracture BehaviorNumerical Simulation of Viscosity Effects on Carbon Steel 90° Elbow Erosion due to Sand-Liquid Flow