Pusat Pengajian Sains Fizik - Tesis
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- PublicationDosimetric Investigation On The Dental Cone Beam Computed Tomography (Cbct) As An Imaging Modality For Paediatric Cleft Lip And Palate(2024-03)Ashour, Nabeel IbrahimThis study focuses on using dental cone beam computed tomography (CBCT) as an imaging modality for paediatric CLP patients, aiming to assess its safety and feasibility through a comprehensive dosimetric inquiry. To achieve this objective, detailed tissueequivalent (TE) head and neck phantoms representing newborn and 5-year-olds were created using advanced manufacturing techniques, particularly 3D printing.
- PublicationApplication Of Photodynamic Therapy With Magnetic Fields And Dyes For The Treatment Of Microbial Skin Infections In Vitro And In Vivo(2024-03)Al-Dalawi, Ali Adil TurkiThis study aims to explore the multifaceted approach that these qualities provide to the mechanism of action of aPDT in both in vitro and in vivo settings. Initially, the study focuses on determining the depths of penetration and transmission of laser light at various wavelengths across diverse tissues in vitro.
- PublicationLow-Cost Surface Passivation For Black Silicon Solar Cells By Liquid Phase Deposition Techniques(2023-12)Ahmad, Sheriff MuhiddinBlack silicon (b-Si) is a promising surface structure for solar cells due to its low broadband reflectance and superior light trapping properties within the 300–1100 nm wavelength region. For the fabrication of b-Si, one-step electroless metal-assisted chemical etching (MACE) is employed which produces nanowires (NWs) with heights of about 0.4 – 0.8 μm that result in low broadband reflectance but leads to high surface recombination in b-Si solar cells. To address this issue, efficient surface passivation is inevitable, which is essential for developing high-efficiency b-Si solar cells. Surface passivation by the formation of thermal silicon dioxide (SiO2) is the conventional method that involves high-temperature processing. The high process temperatures could deteriorate the nanotextured b-Si formed by the etching process, compromising broadband light absorption in the solar cells. Therefore, liquid phase deposition (LPD) is a promising alternative surface passivation technique that can reduce the surface recombination issue.
- PublicationMolecular Dynamics Simulation Of Nano Wetting Of Lennard-Jones Droplet On Curved Surfaces(2023-12)Alhiassah, Saleh Irsheid SalehThis thesis aims to investigate the wetting behavior of LJ nanodroplets on curved surfaces using molecular dynamics (MD) simulations implemented in the Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS) package. The proposed methodology does not suffer the technical issues that plague experimental approaches. The thesis focuses on the influence of curved surface geometry and varying LJ interaction potentials on wetting transitions.
- PublicationInvestigation Of Zinc Oxide Quantum Dots Based Thin Films On Flexible Substrate For Perovskite Solar Cells(2023-12)Sani, MuhammadIn this research, ZQDs is synthesized via a cost-effective and solution- processed precipitation technique at low temperature (60-150 o C). The as-prepared colloidal ZQDs solution was spin-coated onto flexible Polyethelene terephthalate (PET) and indium-doped tin oxide coated Polyethelene terephthalate (ITO/PET) substrates. Tuning the optical and electrical properties of ZQDs films through changing experimental parameters without any doping has been reported. The influence of film thickness and ZQDs solution concentration (ZQC) on the structural, surface, compositional, optical and electrical properties of the spin-coated thin films and their effects on the FPKSCs performance were investigated.