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 32 for “"Surface topology"”.
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Investigating The Relationship Between Surface Topology And Functional Characteristics For Injection Moulded Thermoplastic Components
Bacteria are known to adhere to surfaces, which allows for the formation of biofilms, possibly causing a surge in hospital-offset infections, perilous diseases, and in some cases, death. Although certain bacteria are present in the natural flora of the human skin, some present extreme clinical …
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A Model of Energy and Angular Distributions of Fluxes to the Substrate and Resulting Surface Topology for Plasma Etching Systems
"An important process in semiconductor manufacturing is the etching of silicon and polysilicon for device fabrication. Chlorine-based chemistries are commonly used in industry today due to the capability of highly anisotropic feature etching allowing the necessary submicron feature production. In …
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Point sample rendering
… Objects are represented as a dense set of surface point samples which contain colour, depth and normal information. These point samples are obtained by sampling orthographic views on an equilateral triangle lattice. They are rendered directly and independently without any knowledge of …
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Implication of Terrain Topology Modelling on Ground Vehicle Reliability
… depends on accurate representation of road surface topology as an excitation to vehicle dynamics simulation software, since most of the excitation input to a vehicle as it traverses terrain is provided by the surface topology. It is not computationally efficient to utilise physically …
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Mechanochemical activation at solid interfaces
Surfaces functionalization provides an enabling platform for molecular tailoring of the chemical and physical properties of a surface in an on-demand fashion. Prior research has established that self-assembled mononolayer (SAM) functionalization can lead to dramatic changes in surface properties, …
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Laser Activated Bonding of Wood
It was found that laser modified wood surfaces can be bonded together to create a wood composite without the need of any additive. This bonding method removes the need of applying adhesive, potentially lowers cost, and eliminates off gassing of petroleum resins, creating a wood product with many …
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GENERATION, MECHANICAL AND STATISTICAL ANALYSIS, AND FEM SIMULATION OF FRACTURE OF REPEATABLE RANDOM ROUGH SURFACES
… materials in service nearly always generate surface roughness, and follow the Central Limit Theorem prediction for surface topology. This study couples experimental and statistical theory, and FEM to extend knowledge of life of materials from initial service surface conditions through surface …
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Multi-spectrum field-use image capture & analysis and the RIBG image filter
… a flash/no flash algorithm, and 2-D to 3-D surface topology algorithm.
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Effect of cold ammonia gas plasma irradiation on dyeability of poly(m-phenylene isophthalamide) fibers with acid dyes
… filament yarn was investigated by studying the surface chemical composition, surface amine concentration, surface topology, and wettability. Surface chemical composition was analyzed by x-ray photoelectron spectroscopy (XPS). The surface amine concentration was evaluated by studying the plasma …
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Nanostructured Coatings for Antimicrobial Applications
… reveals the presence of a complex surface topology with a high degree of roughness. The wettability of the coated surfaces reflects an interplay between the chemical nature of the deposited materials and the surface morphological characteristics. Moreover, it was observed that the …
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Mechanics of periodic elastomeric structures with varying void volume fraction and thin-film coating
… length scales. The transformations and the surface topology alterations are reversible upon unloading, giving the ability to use deformation as a means of tuning or switching wave propagation properties that depend on periodicity, and surface properties that depend on topology.
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The Stochastic Dynamics of Optomechanical Sensors for Atomic Force Microscopy
… Atomic force microscopy (AFM) is a tool to image surface topology down to the level of individual atoms. Conventional AFM has been an essential tool for micro and nanoscale studies in physics, chemistry, and biology. Cavity optomechanical sensors for AFM extend the utility of conventional AFM into …
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Coalescence of bubbles and drops
… fluid drops come close enough together to touch, surface tension quickly pulls the drops together into one larger drop. This is an example of a singular fluid flow, as the topology of the interface changes at the moment of contact. Similarly, when a pair of bubbles touch, the surface topology …
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Thermoplastic composite consolidation
… The model was developed by integrating a prepreg surface topology characterization with a resin flow analysis. Both unidirectional and cross-ply lay-ups were modeled. Two-ply unidirectional laminae fabricated from graphite-polysulfone and graphite-PEEK prepregs and [0/90/0]<sub>T</sub> laminates …
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Ontogenic Resistance To Uncinula Necator In Developing Berries Of Grapevine (Vitis Spp.): Using Germplasm Diversity To Study The Mechanism
… both epicuticular wax chemistry as well as the surface topology are possibly involved in the gain of resistance. These studies have propelled our understanding of this potentially useful form of host resistance, which could eventually lead to new practices of disease control in the vineyard …
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A 4D photogrammetric system for studying flow-like landslides
… stage of the study, the system’s capability for surface topology analysis and velocity mapping is demonstrated through granular column collapse flume experiments.
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Novel Fluorous Hybrid Surface Modification Characterized by Wetting Dynamics, Morphology and Nanomechanics
<p>The surface response of a polymer substrate to external stimuli such as initial wetting is controlled by the outermost molecular layer. Thus, changes on the nanoscale may be engaged to control macroscale wetting behavior. Our work has predominantly focused on surface modification of conventional …
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Optimization of gadolinium-doped zinc oxide films for diluted magnetic semiconductor and its effects on organic solar cell performance
… with 8 % Gd contents. The structural, surface topology, optical, electrical and magnetic properties of the film were studied in detail. Structural studies revealed that the film had a hexagonal wurtzite structure. Surface topologies showed that the film had a smooth and uniform surface. …
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Study of phonon transmission through solid-solid interfaces and superlattices by phonon imaging
… fluxintensity simulations, and the slowness-surface topology are analyzed in detail for a wide range of elastic constants. A classification is developed whereby the pattern of phonon-focusing caustics may be predicted for any cubic material given its elastic constants and density. 2. …
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Mechanical stiffness-defined matrices for stem cell research and drug screening
… (ECM) signaling pathway, such as growth factor, surface topology and stimulation signal. Hence, these materials are suitable candidates to develop engineered matrices for stem cell culture, cell manipulating platforms in biological research and drug development. In this thesis, commercialization …
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