Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 28 for “"Surface Dynamics"”.
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Free surface dynamics in shallow turbulent flows.
… to understand the processes that govern free surface behaviour in depth-limited turbulent flows. Experimental data has shown that the turbulence properties at a point near the free surface relate directly to the properties of the free surface pattern. This would suggest a direct linkage …
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Surface dynamics in III-V epitaxy and its device implications
… as a surfactant; accumulating on the sample surface during the growth of intentional doping layer and gradually incorporating into the nominally undoped layers even after the Zn source is shut off. Experimental findings are modelled by combining the surfactant and diffusion behavior with good …
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Molecular dynamics studies of surface dynamics and dynamic heterogeneity of supercooled metallic liquid
… of glass, especially the unique issues on its surfaces, has remained unsolved for decades. In this work, we performed MD simulations on Zr50Cu50 supercooled metallic liquid in the bulk, near the free surfaces and the constrained surfaces at a target temperature of 900 K. The goal is to unveil …
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Investigation of Gas-Surface Dynamics Using an Ar Atomic Beam and Functionalized Self-Assembled Monolayers
Interactions of gas-phase molecules with surfaces are important in many ordinary events, such as ozone depletion, corrosion of metals, and heterogeneous catalysis. These processes are controlled by the bonding, diffusion, and reactivity of the impinging gas species. Our research employs molecular …
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In Situ Investigation of Titanium Nitride Surface Dynamics: The Role of Surface and Bulk Mass Transport Processes
Embargo set by: Seth Robbins for item 84098 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs
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INTERFACIAL DYNAMICS OF DROP COALESCENCE AND IMPINGING LIQUID JETS: EFFECT OF VISCOUS, MARANGONI AND SHEAR-THINNING STRESSES
<p>The free-surface dynamics of drop coalescence and that of impinging liquid jets have both fundamental interest and practical importance in processes ranging from crop spraying and the processing of food emulsions to the atomization of fuel and pro- pellants in combustion and propulsion engines. …
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INTERFACIAL DYNAMICS OF DROP COALESCENCE AND IMPINGING LIQUID JETS: EFFECT OF VISCOUS, MARANGONI AND SHEAR-THINNING STRESSES
The free-surface dynamics of drop coalescence and that of impinging liquid jets have both fundamental interest and practical importance in processes ranging from crop spraying and the processing of food emulsions to the atomization of fuel and pro- pellants in combustion and propulsion engines. …
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Membrane-cytoskeleton associations during myogenesis
… antibodies directed at the myoblast cell surface either inhibited or promoted the fusion of L8E63 rat skeletal muscle cells in culture, and this suggests that the fusion of skeletal myoblasts is regulated by distinct, cell surface components. Such perturbations of myoblast fusion by …
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In Situ High-Temperature Scanning Tunneling Microscopy Studies of Early Stage Growth Kinetics During Titanium Nitride Epitaxy
… of island shapes on both TiN(001) and (111) surfaces. I have developed a combination of experimental and theoretical techniques to analyze the surface dynamics measurements and determined adatom surface transport parameters, step energies, step stiffnesses, and kink formation energies on …
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Diffusion and growth of steps and islands on surfaces
Surface science aims at the control of surface structures even on atomistic scales. Growth of metal and semiconductor crystal surfaces requires accurate growth techniques, among which Molecular Beam Epitaxy (MBE) has a special status since it can be very efficiently used to produce growth in well …
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Feasibility of Single-Point Excitation Ultrasonic Force Microscopy
… to create and detect the motion of tip-induced surface waves and thereby study nanoscale surface dynamics. Before committing to the construction of an instrument, we investigate the theoretical feasibility of such a novel instrument to determine if the expected amplitude of induced surface waves …
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Low-temperature molecular beam epitaxy of gallium arsenide Antisite incorporation and Rheed oscillations: A theoretical study
Surface dynamics dominate the incorporation of charged and neutral antisite arsenic and the temporal variation of reflection high energy electron diffraction (RHEED) intensity in the low temperature (LT) molecular beam epitaxy (MBE) of (100) gallium arsenide (GaAs). A comprehensive rate equation …
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Internal tides near steep topographies
… non-hydrostatic internal tides since these dynamics have not yet been carefully evaluated for accuracy in this framework. We find that, for low-aspect ratio topographies, the z-coordinate mesh in the 2DFV code produces numerical artifacts near the bathymetry. To ameliorate these stair-casing …
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Dynamics of Spin and Charge of Color Centers in Diamond under Cryogenic Conditions
… work and the theoretical analysis of surface dynamics on NV-based AFM probes in proximity to a superconductor. A brief introduction on the experimental infrastructure is reviewed. Time-resolved experiments on the NV’s single electron spin are analyzed to lend insight into the …
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Designing interfacial structures for selective electrocatalysis
… We investigate the structure, activity, surface dynamics, and mechanism of a nickel sulfide catalyst during the oxygen reduction catalysis. By employing the selective nickel sulfide catalyst as the cathode, we construct a proof-of- concept membrane-free fuel cell which significantly …
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Land Surface Phenologies and Seasonalities Using Cool Earthlight in Temperate and Tropical Croplands
… a comprehensive understanding of global cropland dynamics is critically needed. Land surface parameters derived from the passive microwave Advanced Microwave Scanning Radiometer on EOS (AMSR-E) and AMSR2 data enable monitoring of cropland dynamics and they can complement visible to near infrared …
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Real-time atomic resolution dynamics of glass surfaces
… tunneling microscopy (STM) to study glass surfaces in real-time. Initial experiments on metallic glass surfaces discovered localized two-state dynamics of atomic clusters (2-8 atomic diameters) active even below the glass transition temperature (Tg). Atomic scale evidence of spatial and …
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Development and Application of NMR Diffusometry and Relaxometry Methodologies to Study Organic-Inorganic Interactions at Nanomaterial Surfaces
… treatment. These materials also have very high surfaceto- volume ratios, with intricate surface chemistries which control nearly every aspect of their chemical, physical, and colloidal properties. The interaction of the surface with the environment is limited via capping the surface of the …
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Dynamics of Adsorption and Desorption on Chiral Surfaces
… of small molecules on both chiral and achiral surfaces. The interplay between chirality and surface dynamics is explored by using the transition state of the dissociation reaction as a starting point for ab-initio molecular dynamics simulations of the subsequent desorption. Special focus in the …
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Studying complex surface dynamical systems using helium-3 spin-echo spectroscopy
… helium-3 spin-echo (HeSE) technique to complex surface dynamical systems. A twofold approach is presented: the development of improved experimental equipment and the investigation of a series of prototypical aromatic adsorbate systems. Chapter 1 discusses the motivation for this work and …
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