Masters Dissertations : Laser: Recent submissions

  • Comparison of the Effect of Different Lasers Wavelengths and Powers on Teeth Bleaching 
    Mohamed, Setana Abd alhi; Supervisor, -Ali Abdel Rahman Saeed Marouf (Sudan University of Science and Technology, 2017-12-03)
    Lasers have been long introduced in dentistry. Today lasers are been used for Endodontic, Periodontal, Oral Surgery as well as restorative procedures. Here, the effect of different wavelengths on teeth bleaching and in ...
  • Quality Assessment of Medical Heparin Using Laser Scattering Technique 
    Mohammed, Ebdaa Salahudeen; Supervisor, -Nafie A. Almuslet (Sudan University of Science and Technology, 2018-02-09)
    In this work, the goodness of the medical Heparin (concentration) was checked using the principle of laser scattering. A simple setup consists of diode laser with wavelength 532 nm and output power of 100 mW and USB ...
  • Determination of the optical properties of fabricated CuO disks using different lasers 
    Babikr, Faten Abdelrhim Mohammed; Supervisor, -Nafie Abd Allattif Almuslet (Sudan University of Science and Technology, 2017-12-05)
    In this work, copper oxide (CuO) disks were prepared using a classical pressing machine, after mixing with potassium bromide. The disks were fabricated with different thicknesses (1.7, 2.59, 3.46, 4.29, 5.49, 5.92) mm. The ...
  • A study of Human Skin Optical Properties Using a New Dispersion Law 
    El Basher, Esaad Taha Eltaieb; Supervisor, -Siddig Tawer Kafi; Co-Supervisor, -Arbab Ibrahim Arbab (Sudan University of Science and Technology, 2017-11-07)
    In this study, a new dispersion law was presented and applied to study the optical properties of human skin, as well as the general behavior of this law, which was developed by Dr. Arbab Ibrahim Arbab, in which stated that ...
  • Production of Singlet Oxygen From (Eosin blue, Rosa Bengal and Safranin O) Dyes Using Coherent and Incoherent Light Sources 
    El-haj, Marwa Hassan Hijazi; Supervisor, -Nafie A. Almuslet (Sudan University of Science and Technology, 2017-10-25)
    In this work the possibility of production of singlet oxygen was investigated for three dyes, namely (Eosin blue, Rose Bengal and Safranin O) after irradiation by two light sources: the first is green diode laser with ...
  • Diagnosis of Sickle Cell Anemia Using Laser Emission Spectroscopy 
    Mohammed, Esraa Hassan Ali; Supervisor, -Nafie A. Almuslet (Sudan University of Science and Technology, 2017-10-26)
    In this research,the laser emission spectroscopy was utilized to diagnose the sickle cell anemia among five samples of blood;one normal and four with sickle cell anemia. The five samples were irradiated by diode laser of ...
  • Hardness Enhancement of Human Teeth Filler (Amalgam) Using Low Level Laser 
    Elbashier, Reem Mirghani Gaafer; Supervisor, -Nafie A. Almuslet (Sudan University of Science and Technology, 2017-08-28)
    In this study, human teeth filler (Amalgam) hardness was enhanced using Low Level Laser. The amalgam samples were prepared by amalgamator device and irradiated for 30 seconds by diode laser with wavelength of 671 nm and ...
  • Effect of Direct Sunlight Exposure on Selected Food Dyes 
    Abd-Almageed, Huda Alhassan Omer; Supervisor, -SiddegTawerKafei (Sudan University of Science and Technology, 2017-07-03)
    This research was proposed to study the effects of direct Sunlight exposure on selected artificial food dyes(Sunset yellowE110, TartrazineE102, Allura RedE129, Fast GreenE142). These dyes were desolved in distilled water ...
  • Effect of Laser Radiation on Germination and Growth Rate of Sorghum Vulgar Seeds 
    Mohammed, GholamallahSiddigMerghani; Supervisor, -S.T.Kafie (Sudan University of Science and Technology, 2017-07-30)
    Laser is one of the sources for inducing biostimulation effect and genetic changes in plants. In this study the IR laser (wavelength 915 nm) was usedto stimulateSorghum vulgar Sppseeds. Seeds were divided into two groups, ...
  • Usage of laser emission spectroscopy to produce singlet oxygen from Methylene blue, Eosin yellow and Fluorscin 
    Osman, Ibrahim Slah Mohammed (Sudan University of Science and Technology, 2017-05-17)
    In this work the emission of singlet molecular oxygen at room temperature was determined by using spectroscopic method. The dyes were preparedfrom (Methylene blue, Eosin yellow and Fluorscin dissolving in methanol ...
  • Photodegradation of Methyl Orange Molecules Using Laser Photocatalysis 
    Abdlrhman, Hayfaa Taj Elsier Ahmed (Sudan University of Science and Technology, 2017-05-17)
    In this work, a UV light emitting diode (LED) with a wavelength of 365 nm and power 1200 mW was used as UV source for the photodegradation of methyl orange molecules by stimulating zinc oxide, as a catalyst, to interact ...
  • Determination of the Optical Properties of Pure and Doped Polyvinyl Alcohol using Different Lasers 
    Osman, Wafaa Hassan (Sudan University of Science and Technology, 2017-05-15)
    In this work, the optical properties of purepolyvinyl alcohol(PVA) and PVA doped with silver nitratewith different mass ratioswere studied using different types of monochromatic light sourcesin wavelength range (360-920) ...
  • Cleaning Rust of Iron using Pulsed CO2 Laser 
    Abd Elwahab, Ahmed Abd Elwahab Ahmed (Sudan University of Science and Technology, 2017-05-05)
    As general laser properties it’s unique, are used in a wide variety of applications in all walks of life. The common problem to metal industrial is rust. The rust is a layer coated surfaces of metallic object which decreases ...
  • Usage of different lasers to produce emission of light from some dyes 
    Mohammed, Nahla Elballola Ahmed; Supervisor,-Nafie Abd Allattief Almuslet (Sudan University of Science and Technology, 2016-03-07)
    In this work, the emission of some dyes were studied after excitation by different lasers. The emitted light can be used for different applications including Photodynamic Therapy (PDT). The dyes were preparedfrom (Alcain ...
  • Photodegradation of Malachite Green Molecules Using CuO Photocatalyst 
    Mohamed, Amani Mohamed Yosif; Supervisor,-Nafie Abd Allattief Almuslet (Sudan University of Science and Technology, 2016-04-10)
    In this work the toxic Malachite green was degraded using photodegradation technique, in which a LED emitting at 365 nm and power 1200mW was used as UV source. It stimulate the copper oxide (CuO) to interact with Malachite ...
  • Photodegradation of Chloroform Molecules Using Fe2O3Photocatalyst 
    Khairi, Aisha Darwish Mohammed Khalid; Supervisor,-Nafie Abd Allattief Almuslet (Sudan University of Science And Technology, 2015-11-25)
    In this work a simple and active photocatalysis system was used to degradate chloroform from wastewater by irradiation with monochromatic UV light source with output power of 1200 mW and 365 nm wavelength. Fe2O3 ...
  • Enhancement of Silicon Solar Cells Efficiency using Laser Surface Modification 
    Elkhalifa, Marwa Ibrahim Salama; Supervisor, - Ali A. AlrahmanMarouf (Sudan University for Sciences and Technology, 2015-11-03)
    Solar energy is rapidly becoming one of the most promising renewable energy sources available to us. This work aimed tomodifythe surface of mono crystalline silicon solar cell.Texturing of semiconductor surface can be ...
  • Calibration and Measurement the Spectral Rang of Laser Goggles 
    Osman, Islam Mohammed; Supervisor, - Ali Abdel Rahman Saeed Marouf (Sudan University of Science & Technology, 2015-12-10)
    Appropriate eye protection is a prerequisite for the safe operation In industrial and laboratory environments. In this thesis some laser goggles in the clinic of the laser institute of Sudan university of Science ...
  • Production of polyacrylamide from monomer using laser 
    El-ameer, Abeer A. E. El-ameer; Supervisor, - Mohmmed A. Elkareem; Co-Supervisor,-Nafie A. Almuslet (Sudan University of Science & Technology, 2005-06-05)
    This work aims to study visible laser-induced polymerization of acrylamide. Three individual drops of the polymerization mixture were irradiated with He-Ne laser-emitting at 632.8 nm with output power of 1mW-for different ...
  • Effect of Laser Pulse Energy and Repetition Rate on Optical Transmittance Spectra of Fe2O3Thin Films 
    Abdalgader, Altaf Alsaid Mohamed; Supervisor, - Ali Abdel Rahman Saeed Marouf (Sudan University of Science & Technology, 2015-10-12)
    In this work; iron oxide thin films (Fe2O3) were fabricated by pulsed laser deposition technique (PLD). Pulsed Nd: YAG laser was used for prepared Fe2O3 thin films at wave length 532nm and 10 ns pulse duration with ...

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