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 36 for “"coating techniques"”.
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Bench Scale Analysis Of Experimental Fouling-resistent Low Pressure Reverse Osmosis Membranes Using High Organic Surface Water And Synthetic Colloidal Water
… included analysis of the various trade secret coating techniques termed single, double, and special. A proprietary post-treatment process was also utilized in combination with each of the coating techniques. The developmental membranes were also compared to commercially available FRMs. The …
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Corrosion resistant CMZP and Mg-Al2TiO5coatings for SiC ceramics
Thin film coatings of (Cao.6Mg0.4)Zr4(P04)6 (CMZP) and Mg stabilized AhTiOs ( Mg-Ah Ti05 ) on dense SiC substrates were investigated using sol-gel coating techniques. The thickness and quality of both CMZP and Mg-Ah Ti05 coatings were found to depend on the solution concentration and lift rate. …
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Laser produced SiO2/TiO2 coating on stainless steel substrate with sol-gel processes.
Protective coatings are widely used in industries such as aerospace, oil, mining and marine in order to increase the life time of essential components against corrosive environments. Coating techniques have been developed in various ways for numerous purposes: plasma vapour deposition (PVD), …
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Limitation of lithium fluoride (LiF) properties for passivation layer in organic solar cells application
… supply. The solar cell preparation using spin coating techniques are the most compatible. As a conclusion, Lithium Fluoride (LiF) prevent metal electrode from diffusing into PEDOT: PSS (poly (3,4-ethylenedioxythiophene) poly(styrenesulfonate)) and ITO (Indium Thin Oxide) because LiF is an …
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Increased Functionality Porous Optical Fiber Structures
… PCBM) were deposited on the fibers using dip coating techniques. Quantum dots of Cadmium Selenide (CdSe) with particle sizes of ranging from 2- 10 nm were deposited in the stochastic ordered hole fibers. SEM and EDS analysis confirm that copper, polymer materials, and quantum dots were …
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Scalable Perovskite Thin-Film Photovoltaics
… allows for high-speed roll-to-roll printing and coating processes as pathways for large scale manufacturing. Here, the challenges of scaling these materials are discussed from multiple vantage points keeping end slot-die manufacturing in mind. First, as these are ink-based materials, governmental …
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Toxicity of manufactured particulate materials on plant root growth
… Physical and chemical characterization techniques of FTIR, SEM/EDS, the BET method, and particle size analysis, as well as liquid phase coating techniques were applied simultaneously to facilitate the study on toxicological mechanisms of these manufactured particles. The results indicate …
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Formulation and Process of Powder Coating for Solid Oxide Fuel Cell Interconnects
… (MCO) spinel is used for SOFC interconnect coating to decrease the oxidation rate and the chromium migration, and to increase the SOFC lifetime. The current preferred coating method is air-plasma spray (APS) which has transfer efficiency of only around 40%, and is relatively expansive. The …
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Defluoridation of Water Using Silica Based Aluminum Coated Adsorbents
… silica served as base materials for coating with aluminum and combinations of aluminum, magnesium, calcium, and copper to create single, binary, and ternary composite sorbents. Among the tested materials, aluminum-coated microcrystalline silica (AlCMS) showed the highest adsorption …
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Characterization of Spin Coated Polymers in Nano-environments as a Function of Film Thickness
… A series of thin films were examined using techniques such as dielectric analysis and thermal mechanical analysis. The theory of cooperativity, which explains polymeric behavior using the intermolecular and intramolecular forces among polymer chains, was employed to understand the behavior …
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Sol-gel preparation of silicon nitride materials
Sol-gel techniques are mainly used for oxides but are of growing interest for non-oxide materials. They allow formation of solid materials through gelation of precursor solutions and can be used to control composition and to produce a large number of useful morphologies such as films, monoliths, …
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Catalytic membrane reactor-separator for environmental applications.
… membrane properties by the use of systematic dip-coating techniques and the application of the technique in a bi-layer membrane repair concept for gas separation membranes has been studied. In addition, several methods were used to characterize the membranes, including scanning electron …
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Manufacture of metal-based nanoparticles and their incorporation into plastic materials for the development of active antimicrobial food packaging
… films via solvent casting, extrusion or coating techniques. The resulting films were assessed in terms of their mechanical, thermal, barrier and antimicrobial properties. Surface modification of commercial polymer films using piranha solution or UV/ozone treatment was carried out to …
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Development and analysis of novel photoelectrochemical reactor for solar based clean hydrogen production
… In sequence, electrodeposition and sol-gel dip coating techniques are practiced fabricating a copper oxide semiconductor as a working electrode and a titanium dioxide-coated electrode in counter. The new reactor concept is experimentally tested for various conditions through physical …
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Modified Hydrogel Matrices in Fibre Optic Sensors
… of suitable membrane systems and of suitable coating techniques in order to apply them to the fibre optics is described. Initial results obtained from hydrogel coatings implied that the refractive index change in the polymer matrix, due to a change in water content with pH is the major factor …
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Bioactive surfaces for improved coronary stent performance
… are now focused on the development of stent coatings that address these limitations. Amongst many different materials currently being investigated as stent coatings, conducting polymers, such as polypyrrole (PPy) have particular promise. Drug-containing polypyrrole coatings can be deposited …
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Enhanced phase change heat transfer through advanced fabrication techniques
… various materials, structures, and non-polar coating techniques for versatile applications. The studies herein mainly focus on gaining fundamental understanding of water vapor nucleation on intrinsically designed surfaces, controlling and developing different wettability patterns. From …
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MEMS-Based Micro Gas Chromatography: Design, Fabrication and Characterization
… stationary phase using static coating technique. To address the low sample capacity of these narrow columns, this work presents the first generation of MEMS-based "multicapillary" columns (MCCs) consisting of a bundle of narrow-width rectangular capillaries working in parallel. …
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Transfer and Filling of Non-Newtonian Liquids in Printing and Coating Processes
… inks in liquid-based printing and coating applications, much remains to be explored regarding their influence on the flow dynamics. In this thesis we study several model problems to advance our understanding of how non-Newtonian behavior affects (i) transfer of liquid between two …
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