• Thgorgticali Vestigatlon of Supgrconouctivity in (Sr, Na)-Grapheng Shget 

  Haile, Mesfin (Addis Ababa University, 2013-06)

  Graphcne hfl,s many remFlrkablc properti es) but superconductivity is notably absent. Hccent observation of proxi mity effeeL has ignited in superconductivity of graphel'" sheel,. In this work wc explore. using density ...
• Effects of Aromatic Ring (C6) Fictionalization on Electronic- Transport Properties of Armchair Graphene Nanribbons 

  Sinu, Melese (Addis Ababa University, 2013-03)

  Two dimensional structures like graphene nanostructures exhibit vanous phys ical properties on in-plane anchoring of fun ctional groups. We have investi gated the electronic band structure, the density of states (DOS), ...
• Gloally Convergent Modification of Newto's Method 

  Kedir, Girma (Addis Ababa University, 2003)
• Invest Ligations of Electronic and Phonon Mediated Superconductivity of (Rb, K) Doped Graphene 

  Gebreamlak, Gebrekirstos (Addis Ababa University, 2013-06)

  We performed ab-initio calculations on a novel class of superconductors, which comprise of alkali doped graphene. The graphene is doped wit h the potassium and rubidium atoms. We theoretically studied lattice dynamics ...
• Ab-Initio Calculations of High Pressure Phase Transition, Structural and Electronic Properties of Bexznl _Xs (X = 9.00, 0,41, 0.66 and 1.00) Ternary Alloys 

  Fufa, Fatana (Addis Ababa University, 2013-06)

  In this piece of research, we have performed self-consistent ab-initio calculations to study the structural and e lectronic properties of BexZnl -xS mixed crystals in the various low and high pressure crystallographic ...
• Simulation of Five Layers Solid-State Memory Capacitor 

  Kebede, Eyob (Addis Ababa University, 2010-07)

  Tn t his work we provided th e simulation of a five layer charge-cont rolled memory capacitor in which periodic and non-period ic metamaterials are embeddcd between the plates of a rcgul ar paralic! plate capacitor. The ...
• Investigation of Calcite Fineness on the Physico-Mechanical Properties of Ordinary Portland Cement 

  Belew, Eyob (2013-03)

  The use of limestone as a partial rep lacement of Ordinary Portland Cement (OPC) has several advantages like Technical, Economical and Env ironmenta l. The present study aimed at investigating the phys ico-mechanical ...
• Effect of Solvent Additives and P3HT on PDTSTTz/PCBM Based Bulk Heterojunction Solar Cells 

  Ergete, Asegid (Addis Ababa University, 2013-05)

  The dcpcndcncy o fthc performance of organic bulk heteroj uct ion (B HJ) so lar cell s on the nanomorphology of the photoactive blend can be co ntro lled by so lvent additi ves. In this work BI-IJ so lar cells ba sed on ...
• Spin Dependent Transport Properties of Graphene Nanoantidots: A First-principles Study 

  Dekama, Allah (Addis Ababa University, 2013-03)

  Inherently, Graphene - a perfect 20 hexagonal crystal of C-atoms, is a non-spintronics material due to spin moment cancellation of C-atoms, especiall y, at the edges. Spintro nics, or spin electronics, involves the study ...
• Effects of Carbon Content in Ferrite and Martensite on Lattice Parameter and it’s Diffusion Process (Computer Simulation) 

  Mengistu, Yilma (Addis Ababa Universty, 2011-01)

  Molecular dynamics and molecular static simulation has been performed to investigate the structural transition of martensite and the diffusion properties of single carbon atom in the bulk of ferrite. For both types of ...
• Role of Surface Chemistry in Modifying the Optical Properties of Silicon Nanostructure 

  Belege Tsegaye (Addis Ababa Universty, 2010-06)

  We combine two model used earlier. We vary the fitting parameters C and α (which depend on surface, geometry, confinement, size, porosity and materials properties). We use surface energy (Es = 0.05eV), binding energy (Eb ...
• Investigations of Electronic Structure of Bare and Passivated Nanocrystalline Silicon Clusters and their Transport Properties 

  Teklahymanot, Solomun (Addis Ababa Universty, 2009-06)

  Silicon low dimensional structures are found to be extremely stable in comparison to bulk silicon along with variety of interesting electronic properties. They are established as potential candidates for various promising ...
• Simulation of Three-Layer Solid State Memcapacitor 

  Wami, Shiferaw (Addis Ababa Universty, 2010-06)

  Memcapacitors are capacitors whose capacitance depends on the past states through which the system has evolved. The focus of this thesis is on the possible realization of a three-layer solid-state memory capacitive ...
• Study the Effect of Ultraviolet Radiation on Polycrystalline Silicon Solar Cell 

  Teklu Nigatu (Addis Ababa Universty, 2009-03)

  The effect of ultraviolet(UV)radiation on polycrystalline silicon solar cell was studied. The reflectance spectrum, performance parameter and external quantum efficiency was analyzed by varying exposure time for different ...
• Investigation of Damping Effects on Power Loss in an Optical Fiber Due to Higher Order Nonlinear Term 

  Abebe Mulualem (Addis Ababa Universty, 2009-07)

  Many properties of optical fibers namely power loss, noise, distortion, attenuation, absorption, damping etc are guided by nonlinearities. They must be checked and calculated their effects before put into applications. ...
• First Principle Determination of Electronic Structures of Bimno3 Using Hubbard U Correction 

  Atlaw, Mesfin (Addis Ababa Universty, 2009-06)

  In this research work the electronic structure properties and lattice instability of BiMnO3 are examined by employing first principle DFT based techniques. First we perform a pseudopotential calculation using general ...
• Investigation of Calcite and Volcanic Ash for their Utilizations as Cement Filling and Additive Materials 

  Aregaw, Mengistu (Addis Ababa Universty, 2010-06)

  The purpose of this study is to use calcite and volcanic soil as cement filling and additive materials in order to maximize cement productions in Ethiopia. In this study the characteristics of calcite and volcanic soil, ...
• First Principle Simulation for Electronic Structures and Transport Properties of Edge Doped Graphene Nanostructures for Applications in Glucose Sensors 

  Semu, Gishu (Addis Ababa Universty, 2012-06)

  Glucose as adsorbed species on edges of the graphene nanostructures are found to create some significant variations among the nanostructure’s electronic properties and the changes are fruitfully tapped for futuristic ...
• Experimental Technique to characterize Macrobending Loss in Single Mode Fiber 

  Getu, Girum (Addis Ababa Universty, 2010-06)

  An experimental technique of macrobending losses for a single mode fiber (SMF) with different radius of curvature is presented. Macrobending losses for SMF are investigated experimentally, showing that a tight bent of ...
• Ab–initio Calculations of Structural and Electronic Properties of a BexZn1-xSe Ternary Alloy 

  Mulualem, Getasew (Addis Ababa Universty, 2012-06)

  We have used the ab-initio SIESTA code within the framework of DFT, LDA method to calculate the structural and electronic properties of BexZn1-xSe alloy for different compositions x = 0.0, 0.33, 0.66, and 1.0. The system ...

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