Browsing Department of Physics by Title
Now showing items 163-182 of 197
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Shape control of FePt nanocrystals
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2009-04-06): FePt nanocrystals were prepared by simultaneous reduction of platinum acetylacetonate and thermal decomposition of iron pentacarbonyl in properly chosen solvents/surfactants. A variety of FePt nanocrystals, including ... -
Silicon Carbide At Nanoscale: Finite Single-walled To "infinite" Multi-walled Tubes
(Physics, 2013-03-20)A systematic ab initio study of silicon carbide (SiC) nanostructures, especially finite single-walled, infinite double- and multi-walled nanotubes and nanocones is presented. Electronic and structural properties of all ... -
Silicon Carbide Nanotubes: Promises Beyond Carbon Nanotubes
(Physics, 2008-09-17)First-principles calculations for the electronic and geometric structures of three different types of armchair and zigzag silicon carbide nanotubes from (3, 3) to (11, 11) and (3, 0) to (11, 0) have been performed using ... -
Simulations Of High-latitude Ionosphere-magnetosphere region plasma density structures and the Alfvén waves effects
(Physics, 2009-09-16)O+ density structures in the polar cap ionosphere-magnetosphere region near 6000 km altitude have been observed with numerous spacecraft, with O+ densities ranging from above 10 cm-3 to lower than 0.01 cm-3. Regions with ... -
Spin Coupling By Conduction Electrons Explored By Double Time Green's Functions
(Physics, 2013-03-20)The impurities containing unfilled d or f shells may have localized magnetic moments in nonmagnetic metals, semiconductors, and superconductors under certain conditions. These localized moments interact with each other ... -
Strong Constraints on New Physics from the IceCube South Pole Neutrino Observatory
(2022-12-12)The IceCube Neutrino Observatory, a gigaton-scale ice Cherenkov detector located deep within the Antarctic glacier, has detected hundreds of thousands of atmospheric neutrinos at energies from a few GeV to 100 TeV. Above ... -
Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2007-08-30)FePt nanoparticles with a size of 3 nm and thermally stable room-temperature ferromagnetism are investigated. The monodisperse nanoparticles were prepared by chemical synthesis and a salt-matrix annealing technique. ... -
Structural phase transition and ferromagnetism in monodisperse 3 nm FePt particles
(AIP, 2007)FePt nanoparticles with a size of 3 nm and thermally stable room-temperature ferromagnetism are investigated. The monodisperse nanoparticles were prepared by chemical synthesis and a salt-matrix annealing technique. ... -
STUDIES OF INFLUENCE OF ENERGY DISTRIBUTION ON THE UPPER ATMOSPHERE
(2015-11-30)The energy inputs into the upper atmosphere including both solar irradiation and geomagnetic energy can significantly change the upper atmosphere such as the neutral and plasma densities, velocities and temperatures. ... -
A Study Of Ejection Times Of Terrestrial Planets From The Habitable Zones Of The Solar Twins Hd 20782 And Hd 188015
(Physics, 2009-09-16)We provide a detailed statistical study of the ejection of Earth-mass planets from the habitable zones of the solar twins HD 20782 and HD 188015. These systems possess a giant planet that crosses into the stellar habitable ... -
Study Of Jet And Missing Transverse Energy Performance In Dijet Events With ATLAS Data
(Physics, 2012-04-11)The Large Hadron Collider(LHC) is the world's largest particle collider at CERN, Geneva, operating at a center of mass energy of 7 TeV . The Toroidal LHC Apparatus (ATLAS)is one of two general purpose detectors at the LHC. ... -
Study Of Oxide Surfaces Using Time Of Flight Positron Annihilation Induced Auger Electron Spectroscopy
(Physics, 2007-08-23)Transition metal oxides (TMOs) exhibit a rich collection of interesting and intriguing properties which can be used for wide variety of applications. In this dissertation, I will discuss the first PAES measurements on ... -
Study Of The Response Of The ATLAS Tile Calorimeter To Muons Produced In Sqrt(s) = 7 Tev Proton-proton Collisions At The LHC
(Physics, 2011-10-11)The purpose of this study is to verify the inter-calibration of the cells and uniformity of the Tile Calorimeter (TileCal) detector in the ATLAS experiment at CERN. The response using muons produced in proton-proton ... -
A Study Of The Viscous Interaction Between The Solar Wind And Earth's Magnetosphere Using An MHD Simulation
(Physics, 2012-07-25)The solar wind interacts with Earth's magnetosphere largely through magnetic reconnection and a “viscous-like” interaction that is not fully understood. The ionospheric cross-polar cap potential (ΦPC) component due to ... -
STUDYING THE OXYGEN EFFECT IN PROTON THERAPY VIA GPU-BASED MICROSCOPIC MONTE CARLO SIMULATION
(2020-08-10)Dissolved oxygen molecules are known to play an important role in radiotherapy. For example, tumor cells can be more radio-resistance under hypoxia than normoxia. There has been multiple hypothesis proposed to explain these ... -
Synthesis and Application of Porphyrinated Latex Particles for Photodynamic Therapy
(2016-08-26)Photodynamic Therapy is a cancer treatment that requires a photosensitizer to reach a tumor in order to be excited by electromagnetic radiation sources so that the cancer killing agents such as Singlet Oxygen can be ... -
Synthesis And Characterization Of Lanthanide Based Nanomaterials For Radiation Detection And Biomedical Applications
(Physics, 2011-10-11)Lanthanide based nanomaterials have shown a great potential in various areas such as luminescence imaging, luminescent labels, and detection of cellular functions. Due to the f-f transitions of the metal ion, luminescence ... -
Synthesis And Characterization Of Magnetic Nanoparticles
(Physics, 2007-08-23)Synthesis of uniform nanoparticles (<100 nm) of hard and soft magnetic materials have attracted much attention in the last two decades because of their unique magnetic properties and potential for many applications such ... -
Synthesis and Characterization of Nanocomposite Scintillators for Radiation Detection
(2016-05-11)Inorganic single crystal and organic (plastic and liquid) scintillators are commonly used for radiation detection. Inorganic single crystals are efficient and have better energy resolution compared to organic scintillators. ... -
The Synthesis And Luminescence Properties Of Lanthanide-based Nanoparticles For Biological Application
(Physics, 2008-09-17)Lanthanide-doped nanoparticles have great potential as a new kind of luminescent material. In this thesis, we report the synthesis of Cerium-doped LaF3 nanoparticles in dimethyl sulfoxide (DMSO) using chemical reaction at ...