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Controlling atomistic processes on Pb films via quantum size effects and lattice rotation

Description: The two main techniques used to record the data in this dissertation were Spot Profile Analysis - Low Energy Electron Diffraction (SPA-LEED) and Scanning Tunneling Microscopy (STM). A specific data analysis technique for LEED data called G(S) curves is described in depth. G(S) curves can provide a great deal of structural information about the surface; including step heights, island size, and island separation. The effects of quantum size effects (QSE) on the diffusion and critical island sizes… more
Date: June 14, 2012
Creator: Binz, Steven
Partner: UNT Libraries Government Documents Department
open access

Cellular membrane trafficking of mesoporous silica nanoparticles

Description: This dissertation mainly focuses on the investigation of the cellular membrane trafficking of mesoporous silica nanoparticles. We are interested in the study of endocytosis and exocytosis behaviors of mesoporous silica nanoparticles with desired surface functionality. The relationship between mesoporous silica nanoparticles and membrane trafficking of cells, either cancerous cells or normal cells was examined. Since mesoporous silica nanoparticles were applied in many drug delivery cases, the e… more
Date: June 21, 2012
Creator: Fang, I-Ju
Partner: UNT Libraries Government Documents Department
open access

Unorthodox theoretical methods

Description: The use of the ReaxFF force field to correlate with NMR mobilities of amine catalytic substituents on a mesoporous silica nanosphere surface is considered. The interfacing of the ReaxFF force field within the Surface Integrated Molecular Orbital/Molecular Mechanics (SIMOMM) method, in order to replicate earlier SIMOMM published data and to compare with the ReaxFF data, is discussed. The development of a new correlation consistent Composite Approach (ccCA) is presented, which incorporates the co… more
Date: June 20, 2012
Creator: Nedd, Sean
Partner: UNT Libraries Government Documents Department
open access

Developing nanotechnology for biofuel and plant science applications

Description: This dissertation presents the research on the development of mesoporous silica based nanotechnology for applications in biofuels and plant science. Mesoporous silica nanoparticles (MSNs) have been the subject of great interest in the last two decades due to their unique properties of high surface area, tunable pore size and particle morphology. The robust nature of the silica framework is easily functionalized to make the MSNs a promising option for selective separations. Also, the independent… more
Date: June 20, 2012
Creator: Valenstein, Justin
Partner: UNT Libraries Government Documents Department
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