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 87 for “"Surface effects"”.
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The surface effects of alkali halides in the infrared
"The surface state extension of the shallow donor theory is reviewed. The surface state theory and its applications to F-centers of alkali halides is presented. Experimental infrared data show an absorption which seems to correspond with the ground state to first excited state transition. Surface …
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Theory and simulation of surface effects on intrinsic dissipation
The goal of this research is to study the role of surface on intrinsic dissipation in silicon (Si) nanostructures. We look at two different cases namely (i) Si(100) surface with (2x1) reconstruction and (ii) Hydrogen (H) terminated Si surface. We utilize molecular dynamics (MD) simulations and show …
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1/f noise and related surface effects in germanium
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1955.
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Ions in Water: Free Energies, Surface Effects, and Geometrical Constraints.
… related to the underlying physical cause of surface solvation, and the basic assumptions that go with it. Our main conclusions are the following: (i) The main cause of surface solvation of a single ion in a water cluster is both water and ion polarization, coupled to the charge and size of …
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Scour in regions of flow separation with free-surface effects
… other dominated by a flow that rides along the surface. Predicting the flow regime is important because diving-jet scouring rates are substantially faster than surface flow scouring rates, and diving-jet scour holes form nearer to the structure. A bi-stable region exists in which either flow is …
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An investigation into surface effects in thin film plastic scintillators
… the response of thin films prepared on a glass surface. These films show an unexpected non-linearity in their behaviour. It is proposed that the behaviour in these films can be explained in terms of the existence of surface regions in these films. A model based on the existence of these surface …
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Surface Effects on Anchoring and Dynamical Interactions of Liquid Crystalline Films
Effects of surface morphology and chemistry are studied on nanoscale liquid crystalline (LC) films of 4-n-pentyl-4' -cyanobiphenyl (5CB) via polarized Fourier-transform infrared (FTIR) and step-scan time-resolved vibrational (TRS) spectroscopies. Surface-induced alignments and electro-optical …
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Surface Effects of Ground Water Flow Patterns - Bottineau and Mountrail Counties, North Dakota
… of patterns of groundwater flow, certain surface expression is noted as being helpful. Vegetation has been used in other areas as an indicator of the chemistry of groundwater, but this type of exploration may be expanded to include physiography as well as vegetation. </p><p>The presence of …
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Theoretical Modelling and Characterisation of Concerted Tip and Surface Effects in NC-AFM
Rising interest in functionalising molecules and surface and building nano-devices, that is nanotechnology, has in uenced demand for techniques that image molecules and surfaces with atomic precision. One such technique that has answered this call is Non-Contact Atomic Force Microscopy (NC-AFM), …
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Solvent and surface effects on alkene oxidation catalysis over transition metal incorporated zeolites
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2025-08-01
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Infrared Thermometry Analysis of Surface Effects in Subcooled and Saturated Boiling of Water
… are studied, focusing on the influence of surface characteristics, visualized through advanced diagnostics capturing micro-scale phenomena. Utilizing specially crafted thin-film infrared heaters, we measured bubble dynamics parameters and correlated them with surface properties. Nano-smooth …
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Modification of a vortex-panel method to include surface effects and allow finite-element interface
… potential flow is used as a basis for modeling surface effects and creating a finite-element interface so that an arbitrary body can be analyzed. The basic model consists of triangular panels of linearly varying vorticity which represent the body, vortex cores on the lifting edges of the body, …
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Hyperspectral and polarimetric imaging of the ocean for the characterization of the surface effects and measurement uncertainties
… radiance the skylight reflected from the ocean surface represents one of the main sources of measurement uncertainties.</p> <p>NASA’s Plankton, Aerosol, Cloud, and ocean Ecosystem (PACE) mission, successfully launched in February 2024, has the main hyperspectral imager and two polarimeters on …
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Removing near-surface effects in seismic data: Application for determination of faults in the Coastal Plain sediments
… estimation method is introduced to remove the effects of static anomalies caused by lateral variations in near-surface velocity. The application becomes critical where the wavelength of the variation of statics is larger than the maximum offset between source and receiver (spreadlength) used …
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LEVERAGING CONFINEMENT AND SURFACE EFFECTS TO CONTROL POLYMER PHASE BEHAVIOR AND TRANSPORT PHENOMENA IN POLYMER-INFILTRATED NANOPARTICLE FILMS
… is unexplored. Confinement and nanoparticle surface interactions may substantially alter phase behavior from bulk expectations. Additionally, the prevalence of adsorbed polymer layers within PINFs present an opportunity to engineer a polymeric material dominated by interfacial effects, with …
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Size-dependent Electroelastic Properties of Piezoelectric Nanoplates
… piezoelectricity-based nanodevices. Due to large surface to volume ratio and manifest strain gradients typically present in nanostructures, surface effects and flexoelectricity are commonly believed to be responsible for the size-dependent electromechanical properties of piezoelectric …
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The Mossbauer effect of FE57 on the surface of tungsten
The Mossbuaer effect of Fe 57 on the surface of polycrystalline tungsten has been measured over a temperature range of 80 - 5000 K, and at angles of 0° and 60° with respect to the normal. The M8ssbauer spectra consist of three unresolved lines, the middle one agreeing with measured spectra of Fe 57 …
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