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 15 of 15 for “"Polymer Deposition"”.
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Applications and fundamental studies of self-assembled monolayers : conducting polymer deposition and chemical force microscopy
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 1995.
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Computational modeling of fiber reinforced composites melt flow in nozzle extrudate for polymer deposition additive manufacturing.
… properties of processed composite materials for polymer deposition additive manufacturing is critical, especially in the recent-emerging Large Area Additive Manufacturing (LAAM) polymer composite deposition technology. This dissertation aims to broaden the knowledge of how manufacturing inputs …
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pH-Responsive Polymers for Biosurfaces: An Investigation of Solution Properties and Surface Modifying Performance
<p>Gantrez® copolymers are used widely in the personal care industry, but their mechanisms of interaction with dental surfaces are poorly understood. In this study, we determined a number of the solution and polymer properties that control deposition, adsorption and adhesion in Gantrez® polymer …
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Poly(amide acid) infusion with Copper(II) Chloride to form polyimide microcomposite films
… or complex, it has been postulated that lower polymer decomposition temperatures result if residual dopant remains in the bulk of the polymer. Deposition by infusion of the metal salt or complex was proposed as an alternative method for developing surface layers on polyimide films. The infusion …
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Polyelectrolyte nanostructures formed in the moving contact line: fabrication, characterization and application
… printing technique. A model describing the polymer deposition during the moving contact line processes on hydrophobic surfaces has been proposed. The application of this model provides the ground for an explanation of all the obtained experimental data. Utilizing moving contact line approach …
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High performance thermoplastic matrix composite processing: dry powder prepregging, plasma treatment, consolidation/crystallization analysis
… this interest lies in the use of thermoplastic polymers as the composite matrix. Thermoplastics offer the potential of improved mechanical performance, greater solvent resistance, better impact tolerance, as well as cost saving processing attributes such as infinite shelf life, the ability to be …
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Lithography Using an Atomic Force Microscope and Ionic Self-assembled Multilayers
… deposited on it. This leads to the selective deposition of various polymers on the patterned areas. Conditions for enhancing the selective deposition of the self-assembled polymers are studied. Such conditions include the types of polymers used and the pH of the polyelectrolyte solutions used …
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Organic Thin Films Deposited by Emulsion-Based, Resonant Infrared, Matrix-Assisted Pulsed Laser Evaporation: Fundamentals and Applications
<p>Thin film deposition techniques are indispensable to the development of modern technologies as thin film based optical coatings, optoelectronic devices, sensors, and biological implants are the building blocks of many complicated technologies, and their performance heavily depends on the applied …
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Oxidative chemical vapor deposition of semiconducting polymers and their use In organic photovoltaics
… functionalities. OPVs employing semiconducting polymers in the photoactive layer have traditionally been fabricated almost exclusively with solution-based techniques due to a lack of suitable alternatives. This has thus limited polymer solar cells and other polymer electronic devices to using …
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Radiation Transport in Low Pressure Plasmas: Lighting and Semiconductor Etching Plasmas
… in fluorocarbon plasmas, a process dependent on polymer deposition. We first developed a surface reaction mechanism to understand the role played by the polymer film that overlays the SiO2 substrate, and is essential to facilitating an etch. This mechanism was implemented in a Surface Kinetics …
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Synthesis and Characterisation of N-substituted Pyrrole Monomers and Polypyrrole Films
In this body of work, the polymerisation of N-substituted pyrrole monomers and the functionalisation of the monomers or the resulting polymers, with transition metal complexes, were performed. Polymer deposition was executed, utilising the electrochemical deposition technique, due to its facile use …
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Chemical studies of plasma etchants used in integrated circuit manufacture
… and the complementary technique of plasma polymerisation are presented in this thesis. Optical emission spectroscopy with argon actinometry was used as the principle plasma diagnostic. Statistical experimental design was used to model and compare Si and Si02 etch rates in CF4 and SF6 …
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High precision electrohydrodynamic printing of polymer onto microcantilever sensors
… jet printing to deposit 2 – 27 um diameter polymer droplets onto microcantilever sensors. The polymer droplets were deposited as single droplets or organized patterns, with sub-μm control over droplet diameter and position. The droplet size could be controlled through a pulse-modulated …
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Multi-scale morphology development in solution coated conjugated polymers
… role in solution coating of conjugated polymers. On the one hand, interfacial molecular orientation and alignment critically influence the electronic performance in organic semiconductor thin films. On the other hand, the air-liquid meniscus instability lead to various coating morphology …
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Design and Fabrication of Polymer/Graphene Laminate Thin Films
… graphene film produced by chemical vapor deposition (CVD), which is typically not stable when free-standing. Instead, CVD graphene may be coupled with polymer thin films to produce polymer/graphene laminates (PGLs), which show improved mechanical stability and good electrical conductivity …