• AB Initio Study of Surface Energy, Surface Stress and Coupling Coefficient of Au (111) 

  Shehu, Mustapha (AUST, 2023-12-10)

  This study investigates ab initio exploration of the Au (111) surface within the generalized gradient approximation, with a primary focus on assessing the convergence properties of this noble metal. An in-depth analysis ...
  
  
• Modeling of the Origin and Interactions of Multisoliton Solutions of the (2+4)KdV Equation 

  Ningang, Julius Mbuitoh (AUST, 2019-06-05)

  Most of the relevant research work has addressed the properties of internal solitons in a greatly simplified environment, usually in the framework of different versions of the two layer fluid. The simplest equation of this ...
  
  
• Femtosecond laser pulses interacting with atoms 

  Moses, Eshovo Ojo (AUST, 2019-09-16)

  We theoretically investigated a phenomena arising from the interaction of femtosecond pulsed lasers with an Hydrogen atom. The phenomena of interest to us, is the High or der Harmonic Generation (HHG) of soft and hard-Xray ...
  
  
• Structural and electronic properties of a two-dimensional hybrid system of graphene and hexagonal boron nitride: A first-principles study 

  Mahadi, Rabiatu (AUST, 2019-06-02)

  Despite the excellent properties of graphene, graphene based electronic devices are yet to be realized, one of the reason for such is the absence of band gap in graphene. Due to its large band gap, hexagonal boron nitride ...
  
  
• Buoyancy Effects on Human Skin Tissue Thermoregulation due to Environmental Influence 

  Lawal, Hamid Adeola (AUST, 2019-06-05)

  This paper theoretically examines the impact of thermal buoyancy on human skin tissue’s blood flow, heat exchange and their interaction with the surrounding environment using a two phase mathematical model that relies on ...
  
  
• Coherence Control of Tunneling 

  Folarin, Shola Taofeek (AUST, 2019-06-14)

  The phase space representation of quantum mechanics are well known as powerful tools for studying the correspondence between the density operator and classical distributions in phase space. This representation, known as ...
  
  
• Stability and Bifurcation Analysis of a Hindmarsh-Rose Neuronal Model With Time Delay 

  Ahmad, Salihu Jibril (AUST, 2019-07-20)

  In this research work, we study and analyse Hindmarsh-Rose neuronal system with time delay. Considering the fast sub-system of the model, all the possible non-negative equilibria are obtained and their local as well as ...
  
  
• Noise-Enhanced Directed Transport of Cold Atoms 

  Odeke, Bonaventure Andrew (2021-03-14)

  The possibility of enhancing directed transport for a driven quantum particle in the presence of noise is investigated. Specifically, we deal with cold atoms trapped in an asymmetric optical lattice potential (ratchet ...
  
  
• Finite Pulse Ratchet Effect of Cold Atoms 

  Chung, Gyang Davou (2021-03-23)

  The thesis presents the modelling and simulation of the rachet effect created by a spatio temporal asymmetry potential. The potential is a coupled spatial asymmetry sin wave and a rectangular pulse train. The effective ...
  
  
• Graphene-Hexagonal Boron Nitride Work Function Response to Uniform Planar Deformations: An ab initio DFT Study 

  Jesutofunmi, Ayo Fajemisin (2021-04-23)

  A two-dimensional hybrid material with graphene and hexagonal boron (h-BN) domain is considered as viable material for future generations of flexible electronic devices due to the tunable band gap, excellent mechanical and ...
  
  
• Ratchet Current Landscape at Quantum Resonance 

  Kabir, Salihu Suraj (2020-12-14)

  The ratchet effect is the rectified motion of atoms using an unbiased driving force. By ‘’unbiased’’ we mean to say that the time-average is equal to zero. This can be accomplished experimentally using cold atoms in a ...
  
  
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  Effect of Disorder on Spin Transport in Topological Non-Trivial Magnetic Textures 

  Osuala, Cynthia Ihuoma (2019-06)

  An effect that is observed when an electron passes through a non-collinear magnetic textures such as skyrmion, the electron gets deviated as a result of the fictitious magnetic field generated by the skyrmion giving rise to ...
  
  
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  Biomechanics of Surface Runoff and Soil Water Percolation 

  James, Makol Madut Deng (2019-06-23)

  In this study, the complex interaction of surface runoff with the biomechanics of soil water transport and heat transfer rate is theoretically investigated using mathematical model that rely on the two phase flows of an ...
  
  
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  Structural, Electronic and Optical Properties of Cu 2 Sns 3 Solar Absorber: A First-Principle Density Functional Theory Investigation 

  Isyaku, Abdullahi Odoguje (2019-06-23)

  The development of inexpensive, non-toxic, high efficiency and earth-abundant solar absorbers is critical for terawatt scale implementation of photovoltaics. Cu 2 SnS 3 is a promising earth abundant absorber material that ...
  
  
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  Pulsed Lasers in Lidar Application: Models for Optimizing Wind Turbine Performance 

  Iroh, Michael Chijioke (2019-06-22)

  Since the appearance of the first wind turbines at the end of the nineteenth century, wind energy has been considered to be a renewable energy source for not just developed countries but also developing countries as well. ...
  
  
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  Theoretical Study of Current-Induced Dynamics of an Antiferromagnetic Skyrmionium 

  Abayomi, Samuel Obadero (2019-06-22)

  In this thesis, we present a theoretical study on the current-induced nucleation and propagation of antiferromagnetic skyrmionium. A skyrmionium, also known as 2π-skyrmion, is a vortex-like magnetic structure characterized ...
  
  
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  Topological Antiferromagnetic Magnons 

  Jamiu, Adam Ajibola (2019-07-12)

  We have studied a model for a non-collinear but coplanar antiferromagnetic spin texture on a two dimensional kagome lattice structure in the presence of Dzyaloshinskii-Moriya Interaction (DMI). We observed some interesting ...
  
  
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  Tight Binding Descriptions of Graphene and Its Derivatives 

  Muhammad, Maikudi Isah (2017-12-20)

  Graphene is an effectively two dimensional form of carbon atoms arranged in honeycomb lattice. Due to its lightweight, high electron mobility and other special electronic properties it is considered both an academically ...
  
  
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  Combination and Tracking Control of Chaotic Systems 

  Abdulgaffar, ABdurrazaq (2016-06-20)

  Combination-control of two or more systems which may have important application in Josephson junction ratchet array, and other physical systems has not been explored. Most of the theoretical framework is on combination ...
  
  
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  First Principle Study: Absorption of Molecular Hydrogen Sulphide on Gold Clusters 

  Igunbor, Emmanuel (2009-11-13)

  We present theoretical results of the study of H 2 S adsorption on gold cluster Au n (n = 1, 5) using density functional theory with Perdew-Burke-Ernzerhof (PBE) exchange-correlation energy functional. Minimum energy ...
  
  

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