Browsing by Discipline
Now showing items 1-20 of 24
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Amorphous selenium (a-Se) avalanche photodetector for applications in positron emission tomography (PET)
(2011)Although avalanche amorphous selenium (a-Se) is a very promising photoconductor for a variety of imaging applications, it is currently restricted to applications with electron beam readout. This is performed with a vacuum ... -
Characterization of CdZnTe semiconductor for applications in advanced computed tomography
(2017)Cadmium zinc telluride (CdZnTe) is currently the only single crystalline semiconductor used in direct conversion gamma-cameras since CdZnTe can operate at room temperature, unlike other materials (e.g., germanium) that ... -
Computer simulation of functional materials for therapeutic ultrasound applications
(2015-01-13)Magnetic resonance imaging guided high intensity focused ultrasound is a potential non-invasive treatment which uses constructive interference patterns to concentrate ultrasound energy generated by a piezoelectric ... -
Correspondence rules in SU (3)
(2018)In this thesis, I present a path to the correspondence rules for the generators of the su(3) symmetry and compare my results with the SU(2) correspondence rules. Using these rules, I obtain analytical expressions for the ... -
Dark Current modeling and characterization of amorphous lead oxide-based x-ray photoconductive devices for applications in medical imaging
(2022)High atomic number (Z) polycrystalline and amorphous photoconductors are currently being investigated to extend direct conversion X-ray detectors to real-time and high-energy lowdose applications. Amorphous lead oxide ... -
Design and evaluation of a clinical organ-targeted positron emission tomography camera
(2023)Positron Emission Tomography (PET) is a non-invasive medical imaging technique which usesradioactive tracers to visualize the metabolic or biochemical function of tissues and organs. PET imaging aides in the accurate ... -
Experimental evaluation of a solid-state organ-targeted positron emission tomography (PET) camera
(2021)Positron Emission Tomography (PET) with an organ-targeted approach has a potential to significantly improve the diagnosis of a variety of diseases through higher detection efficacy and a reduced dose of radioactivity ... -
In vitro detection of apoptosis using superparamagnetic iron oxide nanoparticles and molecular magnetic resonance imaging
(2010)Superparamagnetic iron oxide (SPIO) nanoparticles have the potential to greatly expand current anatomical imaging techniques, specifically MRI. SPIO nanoparticles targeted to phosphatidylserine (PS) have the potential to ... -
Lead oxide (PbO) for direct conversion fluoroscopic detectors
(2012)Polycrystalline Lead Oxide (PbO) is being investigated as a photoconductive materials for application as X-ray-to-charge transducer in direct conversion x-ray detectors used in fluoroscopy and radiology. Previous usage ... -
Measurement of Rabi oscillation in a spin system
(2018)This work proposes that during the application of an on-resonance MR- pulse there exists a Rabi oscillating fi eld which can be directly measured from a nuclear spin system. These oscillations have been previously ... -
Microscopic modeling of high-field charge transport in amorphous selenium
(2014-01-22)Avalanche multiplication of charge carriers as a result of successive impact ionization has led to the development of solid state avalanche photo-detectors. Crystalline based avalanche photodiodes have found a variety of ... -
Ordered supramolecular oligothiophene structures on passivated silicon surfaces
(2014)The adsorption of brominated tetrathienoanthracene molecules (TBTTA) onto the Si(111) 3-Ag surface has been studied. The molecules were absorbed at room temperature and annealed up to 400C. One monolayer of Ag was used to ... -
Pinning of magnetic vortices subject to multi-well potential in the Ginzburg-Landau theory of superconductivity
(2012-11-10)I will study the existence of multi-vortex solutions of the Ginzburg-Landau equations with an external potential on R2. These equations model the equilibrium states of superconductors: the external potential, W, represents ... -
Plasmonic nanostructure on a tapered fiber for chemical detection
(2017)A simple, cost effective technique to manufacture plasmonic nanostructures as a Surface Enhanced Raman Spectroscopy (SERS) substrate was investigated. The plasmonic structure of gold nanorods was developed on the surface ... -
Positron/electron annihilation via the two-photon pathway
(2012-11-10)When a positron/electron pair annihilate via the two-photon pathway, the emitted photons are momentum correlated. This correlation ensures that they move along a straight line path in opposite directions. An experiment ... -
Proton NMR spectral study of UV treated live Escherichia coli Bacteria / by Michael Sorokopud.
(2010)The lethal effects of ultraviolet radiation on microorganisms have been known and utilized for many years. In sufficiently high photon fluences, light and in particular, UV light, is an effective and subtle means of killing ... -
S U (3) Squeezing: quantum and semiclassical evolutions
(2013-02-03)In this thesis we describe a squeezing for SU(3) systems and compare squeezing in the phase space in the semiclassical approximation with squeezing obtained by the full quantum mechanical calculation. We show that the ... -
Simulated accelerated evolution by modeling the rapid fixation of bacteria along an antibiotic gradient
(2020)The work in this thesis makes connections between statistical mechanics and genotype frequencies in population sizes, and how mutation of the bacteria E. coli helps to increase its resistance to the antibiotic ciprofloxacin. ... -
Study of a brominated triphenylamine derivative on metal and semiconducting surfaces
(2020)Room-temperature STM experiments were conducted for tribromotrioxoazatriangulene, (TBTANGO), on three surfaces: Si(111)-√3x√3-R30o-B, Ag(111), and Au(111) on mica. We found for the silicon samples there was a trade-off ...