Masters Dissertations : Laser: Recent submissions

  • Metals Soldering by Nd:YAG Laser and Conventional Method a comparative study 
    Abu Elnuor, Abu Elnuor Abdeen Ali; Supervisor, - Nafie Abdel Latif CO - Supervisor, - Sabir Mohammed Salih (sudan university of scince and technology, 2006-10-01)
    This research aimed to compare between two soldering techniques, conventional and laser methods. Metallic pieces were joined in two ways: butt and overlap as known soldering designs. The test pieces were soldered manually ...
  • Hardness Improvement of Teeth Filling Material (Amalgam) by Using He-Ne Laser 632.8nm and Diode Laser 675nm 
    AHMED , HALA JAFAR ALAMIN; Supervisor,- BABIKER OSMAN ElBASHIR (sudan university of scince and technology, 2006-05-01)
    In this research we are studied the hardness of the amalgam teeth filling material by utilizing Brinell harness test apparatus. Several tests were carried out on different amalgam mixtures that were subjected to irradiation ...
  • Evaluation of Nd:YAG Laser Cutting of Non-metallic Materials 
    Beteik, Mohammadi Hassan Mohammadi; Supervisor, - Nafie Abdel Latif CO - Supervisor, - Abdel-Karim Babiker Haroun (sudan university of scince and technology, 2006-02-01)
    In this work, which was done in two phases, Nd: YAG Lasers were chosen to be the tool for cutting 2mm thick commercial Perspex sheets. In phase one, pulsed laser output from the YAG-50 Laser Scribing Machine was used ...
  • Enco transmission via optided voicecal fiber 
    Elbadawi, Mutaz Abdalla; Supervisor, - Saad Daoud Sulieman CO - Supervisor, - Mubarak AlMahal Ahmed (sudan university of scince and technology, 2006-03-01)
    In this work, the RSA (Rivest, Shamir, Adelman) cipher system was implemented by software. The data in form of speech waveform have been recorded by using a computer microphone. These digital speeches were encrypted, ...
  • Annealing of some diodes and trimming of carbon resistors using CW Nd 
    Ibrahim, Saad El-Din El-Sadig Mohammed; Supervisor, - Nafie Abdel Latif Supervisor, -co-Abdalla Salih Ali (sudan university of scince and technology, 2007-09-01)
    In this work, the I-V characteristics of the silicon diode were investigated by applying 5W from CW Nd: YAG laser for 10, 20, and 30 seconds, respectively. The results showed that different exposure times changed the ...
  • The Optical Fiber Electrical Current Sensor 
    Ahmed, Sulieman Eldoud Bashir; Supervisor, - Mubarak Almahal Ahmed Co - Supervisor, - Eisa Bashier Mohammed (sudan university of scince and technology, 2007-09-01)
    In this work an optical fiber current sensor was designed and implemented using helium-neon laser (with wavelength of 632.8 nm and power of 1 mW) as light source, single mode fiber based sensing element and photomultiplier ...
  • Surface Hardening of Carbon Steels by High power CO2 Laser 
    Ahmed,Abdel Salam Elshiekh Idris; Supervisor, - Nafie Abd Al-Lattief Co -Supervisor,- Sabir Mohammed Salih (sudan university of scince and technology, 2006-05-01)
    In this work surface hardening treatment of carbon steel specimens, that having a carbon contents ranging between 0.25 and 2.44%, was done using CO2 laser having 10.6μm wavelength, 100μm spot size and with powers ranged ...
  • Utilization of Different Laser Systems to Determine the Optical Properties of Chloroform and Rhodamine 6G Thin – Films in Nanometer Scale 
    Mohammed,Suliman E. Elhadi; Supervisor, - Nafie Abd Al. Latif (sudan university of scince and technology, 2007-09-01)
    In this work thin films were produced from (Chloroform and Rhodamine 6G) deposited on glass substrate that has a thickness (1mm) and refractive index (1.3) in a vacuum chamber firstly; without heating (at room temperature) ...
  • Design & Implementation of Optical Fiber Liquid Level Sensor Using He-Ne Laser 
    Elmahi, Sulafa Omer Elghorashi; Supervisor, - Abdelmoneim M. Awadelgied Co - Supervisor, - Mohmmed H. Abuuznien (sudan university of scince and technology, 2007-09-01)
    One of the difficult duties in chemical industrial units is the determination of the level of liquid for real – time monitoring. Determination of this parameter is useful in process control loop. Hence present study is ...
  • Using Laser Absorption Spectroscopy Technique in Measuring Some Blood Components Concentration 
    El Shazly ,Moutasem Abu El Hassan; Supervisor, - Ahmed Hassan Sabahalkheir (sudan university of scince and technology, 2008-04-01)
    In this work, a measurement of the concentration for (Albumin, Urea, Phosphorous, Calcium, and Total protein.) in human blood is obtained using the He-Ne laser and compared to results that achieved by the conventional ...
  • Determination of the He-Ne and diode laser beam parameters by ISO method And compare it with the theoretical values 
    Hammad,Kawther Bakhiet Ismail; Supervisor, - Ahmed Hassan Sabah el kheir (sudan university of scince and technology, 2008-06-01)
    In this study the parameters of the He-Ne laser beam with wavelength 632.8nm, and power 1 mW and commercial diode laser with wavelength 651.6nm, and power1mW were measured, by applying the method of the International ...
  • Design and implmtation of Optoisolation circut of E.C.G machine using 650nm diode laser 
    Hamad, Areej Awad Allah Mohemmed; Supervisor, - Saad Daoud Supervisor-co , - Kasim M.Al Hity (sudan university of scince and technology, 2008-10-23)
    Electrical safety and more explicityly, patient shock hazard associated with the use of biomedical electronic equipments has become controversial and embrassing subject and become a continuously growing problem. Great ...
  • FLUID VELOCITY MEASUREMENT USING LASER TECHNIQUE 
    Ahmed , Selma Gesm Elseed Mohmed; Supervisor, - Nafia.A.Alltif Supervisor -co, - M.H.H. Abuuznien (sudan university of scince and technology ,Institute Of Laser,2008. 68P. m.sc., 2008-04-30)
    One of the important measurements in chemical industrial units is the measuring of the fluids velocity in different stages of industrial process. Determination of this parameter is important for controlling the heat and ...
  • Design and Implementation of Rotation Speed Sensing System Using Diode Laser 671 nm 
    Elbashir, Abeir Mohamed Ahmed; Supervisor,-Nafie Abd Allattief Almuslet; Supervisor,-Saad Daoud (sudan university of scince and technology, 2009-03-01)
    This study aimed to design and implement a rotation speed sensor by using diode laser (671 nm, 50 mW). The system is composed of photodetector received the laser light signal as pulses because of the use of disk plate ...
  • Utilization of Coherent and Incoherent Light Sources For Phenol Degradation Via Photocatalysis Technique 
    Ahmed, Yasmeen Hafiz Zaki; Supervisor, -Nafie Abd Al-Lattief Supervisor- co , -Mohmed Ali Hussen (sudan university of scince and technology, 2009-07-01)
    In this research study, a simple and active photo-catalysis system was assembling. It consists of a UV monochromatic light source, quartz cell (which is transparent to UV) to hold the sample and magnetic stirrer. The ...
  • Designing & Testing Laser Microvibration Sensor 
    Yousif ,Albashir Zomrawi Mohamed; Supervisor, - Kasim M. AL.Hity (sudan university of scince and technology, 2009-03-01)
    In the past two decades, the optical sensor has been developed from the experimental stage to the practical applications. For instance, distributed optical sensors have been installed in dams and bridges to monitor the ...
  • Measurement and Evaluation of Absorption Coefficient of Some Materials for Lasers in Infra Red Region 
    Ahmed, Moawia A.Rahman A.Allah; Supervisor, - Wafa Salih A.Rahman (sudan university of scince and technology, 2011-05-01)
    In this study 3 types of materials selected: lead sulfate (PbSO4),zinc sulfide (ZnS), mixture of lead sulfate (PbSo 4) and zinc sulfide (ZnS) and antimony trioxide (Sb 2O3),which undergoes spectroscopical analysis using ...
  • INVEESTIGATION OF URIC ACID IN BLOOD SERUM BY RAMAN SPECTROMETER 
    Abdullah, Mohammed Hussein; Supervisor, - Wafaa SalihAbd El-Rahman (sudan university of scince and technology, 2011-11-01)
    In this work uric acid of different blood serum was investigated using Raman spectroscopy as invasive technique. Different samples (15) from patients with renal failure in homo dialysis unit – Soba University Hospital ...
  • Design and Operation of A portable Laser Absorption System to Detect NO2 gas Concentration 
    Taha‬‬,Maria Mohammed Ossman; Supervisor,-Nafie Abd Allattief Almuslet (sudan university of scince and technology, 2008-02-01)
    In this study a portable laser absorption system was designed and operated to detect nitrogen dioxide gas (NO 2) concentration which is a common air pollutant, by means of measurements of laser beam intensity transmitted ...
  • EFFECT OF DIODE LASER 675 nm ON THE BACTERIA INFECTED BURN WOUNDS 
    Musa, Musa Shana; Supervisor,- Nafie Abd Al Lattief Co - Supervisor, - Saeed Nasr Al Deen Saeed (sudan university of scince and technology, 2009-03-01)
    This work aimed to study the effect of diode laser with wavelength 675 nm and power of 30 mW on bacteria infect burn wounds, an also to determine the suitable exposure time of irradiation to kill the main types of infectious ...

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