Browsing Department of Physics by Title
Now showing items 100-119 of 197
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Laser-assisted Transfection, Optogenetic Stimulation And Its Detection In Mammalian Cells
Stimulation of cells, especially neurons is of significant interest both for basic understanding of neuronal circuitry as well as clinical intervention. Existing electrode-based methods of stimulation is invasive and ... -
LOCALIZED BANDS AND THEIR EFFECTS IN THE STRONGLY CORRELATED d AND f ELECTRON SYSTEMS: A FIRST PRINCIPLES STUDY
(2021-08-16)Strongly correlated materials such as d and f-electron systems manifest a broad range of interesting phenomena such as metal-insulator transition, high temperature superconductivity, topologically insulating behavior etc. ... -
LOW DIMENSIONAL SEMICONDUCTING NANOSTRUCTURES: STABILITY, TRENDS AND PROMISES
(2016-05-10)Systematic studies of low dimensional semiconducting nanostructures have been performed. In particular, silicon-germanium (SiGe) armchair type nanotubes, and both zigzag and armchair type nanoribbons were used to represent ... -
MAGNETIC HARDENING IN THE TRANSITION METAL NANOPARTICLES AND NANOWIRES
(2020-08-27)Permanent magnets are important materials widely used in advanced technologies including electric vehicles, windmills, memory devices, magnetic levitation transportation, and biomedical apparatus. Rare-earth-based compounds ... -
Magnetic Thermal Hysteresis In Dy, Gd And Gd/Dy/Gd Nanolayers And Experimental Determination Of Thermodynamic Properties Of Thin Film Systems.
(Physics, 2013-03-20)Magnetic thermal hysteresis (MTH) is observed when the temperature dependent magnetic properties of a material are reliant on the starting point of the measurement. MTH was observed in thin film Dy samples at low values ... -
Measurement Of Single Diffractive Differential Cross Section (dσ/(d|t|)) At √(s ) = 1.96 TeV Using The D0 Forward Proton Detectors
(Physics, 2011-10-11)The analysis described in this dissertation uses the Forward Proton Detectors (FPD) installed at the D0 detector in the Tevatron collider at Fermilab to measure the single diffractive differential cross section (d&sigma/(d|t|)) ... -
Measurement Of The Spectral Distribution Of The Low Energy Electrons Emitted As A Result Of M₃VV Auger Transitions In Cu(100)
(Physics, 2012-04-11)Auger Photoelectron Coincidence Spectroscopy (APECS) was used to investigate the physics of the Low Energy Tail (LET) region of the Auger spectrum of a Cu(100) sample. Two Cylindrical Mirror Analyzers (CMAs) were used to ... -
Mechanism of the anomalous temperature dependence of coercivity in Sm(Co, Fe, Cu, Zr)z high temperature magnets
(AIP, 2006)Coercivity mechanism of the precipitation-hardened Sm Co,Fe,Cu,Zr z high-temperature magnets was found to vary with temperature by measurements of reversible magnetization. The magnetization reversal is mainly controlled ... -
Mechanism of the anomalous temperature dependence of coercivity in Sm(Co,Fe,Cu,Zr)[subscript]z high-temperature magnets
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2006-01-24)Coercivity mechanism of the precipitation-hardened Sm(Co,Fe,Cu,Zr)z high-temperature magnets was found to vary with temperature by measurements of reversible magnetization. The magnetization reversal is mainly controlled ... -
Microstructures and magnetic alignment of L10 FePt nanoparticles
(AIP, 2009)Chemically ordered FePt nanoparticles were obtained by high temperature annealing a mixture of FePt particles with NaCl. After the NaCl was removed with de-ionized water, the transformed FePt nanoparticles were redispersed ... -
MODEL AND OBSERVATION COMPARISONS OF IONOSPHERIC CURRENT SYSTEMS
(2023-05-08)The interaction between the dynamically changing solar wind and Earth’s magnetosphere results in several different current systems. The most relevant to space weather are the Birkeland currents, a.k.a field-aligned currents ... -
Moment Calculations For Low Energy Ions In Jupiter's Magnetotail From Nasa's New Horizons Mission
(Physics, 2009-09-16)Jupiter's magnetosphere and magnetotail is the largest cohesive structure in our solar system which extends to the orbit of Saturn. One of NASA's objectives is to understand how universal bodies interact with its surroundings. ... -
Multiple Coulomb Scattering In the LArIAT Detector
(2018-12-13)LArIAT is a liquid argon time projection chamber (LArTPC) deployed in a dedicated charged particle test beam line at the Fermilab Test Beam Facility. LArIAT aims to measure an interaction process known as multiple ... -
Multiscale ionospheric electrodynamics and their impacts on the ionosphere-thermosphere system
(2020-08-11)In this dissertation, multiscale ionospheric electrodynamics at different latitudinal regions and their impacts on the ionosphere and thermosphere (I-T) system have been studied in three aspects. Firstly, impacts of the ... -
Nanoscintillators For Radiation Detection
(Physics, 2013-07-22)In the search for faster, more effective methods for detection of and protection against radiological weapons, advances in materials for radiation detection are a critical component of any successful strategy. This work ... -
NONLINEAR MODE COUPLING COEFFICIENTS IN EXTRASOLAR HOT JUPITER SYSTEMS WITH NON-SOLAR TYPE HOST STARS
(2021-12-23)Short period planets tidally excite internal gravity modes within their host star. These excited modes, known collectively as the dynamical tide, dissipate orbital energy and cause the planet’s orbit to decay. In hot Jupiter ... -
Novel Roles of Standard and Non-standard Null Lagrangians in Classical and Quantum Physics
(2023-05-19)**Please note that the full text is embargoed until 05/13/2024** ABSTRACT: The three known families of Lagrangians are standard, non-standard, and null Lagrangians. While Lagrangians are widely used in Physics for their ... -
ns2-md0 Post-Transition Metal Oxides for Solar Energy Applications
(2020-08-10)Meeting the growing global energy demand while mitigating the deterioration of the global climate requires the rapid introduction of clean, renewable, and sustainable fuels. Solar energy output at daytime provides more ... -
Observation and analysis of unexplored low-energy electron emission processes revealed using a low-energy positron beam
(2020-08-17)This dissertation presents measurements of the kinetic energy distributions of low-energy, positron-induced electrons emitted from single-layer of graphene (SLG), highly oriented pyrolytic graphite (HOPG), Si, Cu and TiO2 ... -
Observation of L1[subscript]0-like chemical ordering in a decahedral FePt nanoparticle by C[subscript]s-corrected high resolution transmission electron microscopy
(American Institute of PhysicsDepartment of Physics, The University of Texas at Arlington, 2009-03-09)The state of the chemical ordering in a decahedral FePt nanoparticle was studied using aberration corrected high resolution transmission electron microscopy. With the reduced image delocalization effect as a result of ...