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PhD theses : Laser: Recent submissions

Now showing items 1-20 of 52

Detection of Heavy Metals Contents in Sudanese Cement Using Laser Induced Breakdown Spectroscopy Technique

Abdalgader, Altaf Alsaid Mohamed; Supervisor, -Abdelmoneim M. Awadelgied (Sudan University of Science and Technology, 2022-06-21)

In this work, Laser Induced Breakdown Spectroscopy (LIBS) was used to Investigate, and identify, the heavy metals in samples of cement collected from different local markets in Khartoum state. Four cement samples were used ...
Spectroscopic Variability and Optical Properties of Sudanese Edible Oils Using Spectroscopy Methods

Banaga, Mahasin Mohamed Daffalla; Supervisor, - Abul Moneim. M. Awad elgied (Sudan University of Science and Technology, 2022-04-22)

In this study, nondestructive test was applied on six types of edible oils (corn, extra virgin olive, sunflower, pressed sesame, factory sesame and peanuts) using spectroscopic methods. Raman spectroscopy and Fourier ...
Evaluation of the Quality Parameters for Some Laser-Irradiated Edible Oils

Mudawi, Alaa Ahmed Mohammed; Supervisor, -Ali Abdel-Rahman SaeedMarouf (Sudan University of Science & Technology, 2022-01-12)

This work focuses on the laser food irradiation; mainly on investigating of the influence of green laser (532nm) radiation on some physicochemical properties of sesame oil before and after storage period of 15 consecutive ...
Characteristics of Lanthanum Titanium Oxide Thin Films Deposited by Pulsed Laser Deposition under Different Annealing Temperatures

Baba, Mohamed Ahmed Mahgoub Mohamed Salih; Supervisor, -Abdelmoneim Mohamed Awadelgied (Sudan University of Science & Technology, 2020-10-15)

In this work, the influence of annealing temperature and the variation of the thermal stability during the deposition were investigated. Pulsed laser deposition system was capable of manufacturing two groups of La2Ti2O7 ...
Mapping Molecules in Nile Water in Northern Sudan Using Raman Spectroscopy

Dawod, Sufyan Sharafedin Mohammed; Supervisor, -Abdelmoneim M. Awadelgied; Co-Supervisor, -Sohad Saad Elwakeel (Sudan University of Science and Technology, 2019-06-30)

Spectroscopy is the main field of this research which aims to mapping and characterize the molecules on Nile water in Northern Sudan using Raman spectroscopy. Ten samples of water were collected from different five areas ...
Investigation of Toxic Molecules in some Artificial Sweeteners using Raman Spectroscopy

Taher, Ahmed Abubaker Mohamed; Supervisor, -AbulMoneim. M. Awadelgied; Co-Supervisor, -SohadSaadElwakeel (Sudan University of Science and Technology, 2019-07-30)

The field of this research was materials characterization using Raman spectroscopy technique. The aim of this research is to investigate the toxic molecules in some artificial sweeteners using Raman spectroscopy. Six ...
Investigation of the Influence of Laser Parameters on the Thickness and Surfaces Roughness of TiO2 Thin Films Fabricated using Pulsed Laser Deposition

Salih, Ahmed Mohamed; Supervisor, -Abdelmoneim Mohamed Awadelgied (Sudan University of Science and Technology, 2019-07-15)

Among the available thin film deposition techniques, pulsed laser deposition (PLD) is an effective technique to deposit high-quality thin films of various multicomponent materials which based on laser ablation, where ...
Evaluation of Treatment of Scars using Carbon Dioxide Laser in the Skin of People of Colour

Mohamed, Safi EldinElnur Ali; Supervisor, -Babikir Osman Elbashir; Co-Supervisor, -Mohammed Tome Abdel Majeed El-amen (Sudan University of Science and Technology, 2019-06-19)

Scar is an inevitable consequence of skin disruption following trauma, burn, or surgery. Burn and traumatic wounds are the most challengeable to be treated, because these are the worst in clinical medicine. CO2 lasers were ...
Mapping of Basic Elements of Crude Oil Samples Collected from Different Oilfields in Sudan by using Laser Induced Breakdown Spectroscopy Technique

Alamin, HibaJaafer; Supervisor, -Abdelmoneim M. Awadelgied (Sudan University of Science and Technology, 2019-05-05)

This research aim to use modern scientific technique which is laser induced breakdown spectroscopy to identify the components of some crude oil samples. This technique was selected in this work due to its unique characteristics ...
Simulation of the Combustion Products of Gasoline Engine Using Laser Induced Fluorescence Technique

Badreldin, Mustafa Mohammed; Supervisor, -Younis Ahmed Abuaisha; Co-Supervisor, -Khalid Mohamed Haroun (Sudan University of Science and Technology, 2019-04-25)

Laser induced fluorescence (LIF) technique have been developed into very powerful and most widely used non- instructive techniques for measurements. This work is aimed to diagnosis the gasoline engine products using laser ...
Quantum Correlation of Laser Entangled Photons Calculated Via Event-Based Method by Using Matlab Simulation

Mohammed, Ahmed Mohammed Gomaa; Supervisor, -Khalid Mohammed Haroun Mohammed (Sudan University of Science and Technology, 2019-03-28)

Quantum correlations between particles are usually formulated by assuming the persistence of an entangled state after the particles have separated. When entanglement is present, Bell‘s Inequalities are violated but when ...
Effect of Energy and Number of Laser Pulses on the Optical Properties of ZnS Thin Films Prepared By Pulse Laser Deposition Technique

Abd Alla, Mohammed Nouman Mohamed; Supervisor, -Khalid Mohammed Haroun Mohammed (Sudan University of Science and Technology, 2019-03-24)

The field of this research was thin films fabrication using pulse laser deposition technique. The aim of this work is to study the effect of the laser parameters (number of pulses and laser pulse energy) on the optical ...
Study of the Optical Properties of Silicon Dioxide Thin Films Prepared by Nd: YAG Pulsed Laser Deposition

AbdAlraheim, Yousif Hassan Alsheikh; Supervisor, -Khalid Mohammed Haroun Mohammed (Sudan University of Science and Technology, 2018-11-07)

The field of this research is thin films fabrication using pulse laser deposition technique. The main objectives of this work were to fabricate some oxide (such as SiO2) thin films using pulsed laser deposition technique ...
Computational Simulation of Laser Cooling and Trapping of Radium Atoms

Elhaj, Iman Noreldin Sirair; Supervisor, -Nafie A. Almuslet (Sudan University of Science and Technology, 2018-08-12)

This research aimed to study a model of laser cooling and trapping of radium atoms and developing a system of governing equations in similar way to the well-known four-levels Maxwell Bloch system, and to present computational ...
Chaotic Spiking and Multiscroll Attractors in Semiconductor Laser by Optical Feedback

Saeed, Nasraldien Adam Eashag; Supervisor, -Kais AbdelsatarAl Naimee; Co-Supervisor, -Abdelmoneim Mohammed Awadelgied (Sudan University of Science and Technology, 2018-01-10)

In this thesis we present numerical investigation of nonlinear dynamics of a semiconductor laser subjected optical delay feedback. The investigation performed based on numerical simulation of Lang-Kobayashi model over wide ...
Identification of Heavy Metals in SomeWater Sources in Khartoum State using Laser Induced Breakdown Spectroscopy

MIRGANI, EHESSAN BAKRI; Supervisor, -Nafie A. Almuslet; Co-Supervisor, -Mubarak Elmahal Ahmed (Sudan University of Science and Technology, 2017-08-03)

In this work, Laser Induced Breakdown Spectroscopy (LIBS) was used to investigate, and identify, the heavy metals in samples of water collected from different places in Khartoum state during the period from 2013 to 2015. ...
Unidirectional and Bidirectional Synchronization and Control in Chaotic Diode Laser

Ahmed, ALrabab Hassan Eisa Mohamed; Supervisor, -Kais. A. Al Naimee; Co-Supervisor, -Wafaa. S. Abdulrahman (Sudan University of Science and Technology, 2017-08-24)

This study aimed to control chaos from Amplitude modulation optoelectronicdelayed feedback of diode laser, under 1GHz modulation frequency. Also to control unidirectional synchronization and bidirectional synchronization ...
Efficiency Enhancement of Silicon Photovoltaic Cells by Radiating (CO2) Pulses Laser

Bakkri, Husam Abdalla Eljack; Supervisor, -Kais Abdelsatar Al-Naimee; Co-Supervisor, -Babikr Osman Elbashir (Sudan University of Science and Technology, 2017-08-22)

Using Radiation Technology by laser pulsation it does not need to bring samples but it could be irradiating by pulses laser co2 into small spaces being taken into account so as not to make damages on sample during ...
Tracking of Refractive Index variation of Polymethyl Methacrylate after irradiated by femtosecond Laser

Mohamed, Abdel Rahman Abdel Bari; Supervisor, -Kais A. M. Al Naimee; Co-Supervisor, -Kasim Al Hity (Sudan University of Science and Technology, 2017-08-22)

This research is aim to modify the subsurface of poly methyl methacrylate (PMMA) and create diffraction grating by means of ultra short UV laser(Ti:Saphire ) with pulse duration of 250 femto-second laser, wavelength of ...
Usage of Laser Raman Spectroscopy to Identify the Unstable Compounds in Iron Oxides

Mohammed, Siham Mohammed Hassen; Supervisor, -Nafie A. Almuslet (Sudan University of Science and Technology, 2017-09-18)

In this work laser Raman Spectroscopy was used to identify the unstable compounds in five samples of iron oxides (hematite, magnetite, goethite, akaganeite and 2-line ferrihydrite). Firstly iron oxide samples were prepared ...

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