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 85 for “"Polymer film"”.
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Self-assembled thin polymer film used for sensing application
Polymer thin films have played an important role in our everyday lives ranging from industrial to biomedical applications. In this thesis, two major topics based on polymer thin films including photopolymerized self-assembled monolayer and nanoporous thin films derived from diblock copolymer are …
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Heat conduction through a polymer film during flash fusion
Includes bibliographical references.
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Sensors for structural control applications using piezoelectric polymer film
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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In-situ analysis of polymer film coats using AFM and thermal probe methods
… analysis of pharmaceutical solid dosage forms films is of great interest to pharmaceutical research, especially with the drive towards continuous processing compared to batch processing requiring either in-line or on-line analysis of pharmaceuticals. The size and shape of many solid dosage …
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Advanced techniques for chemical gradient, eutectic metal, and crystallized polymer film additive manufacturing
… printing technique to manufacture crystallized polymer films is described. The slot die printing head is of a novel design, using microstructures etched into the head to induce specific flows that cause polymers to crystallize. Two systems are either built or adapted for this printing technique. …
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Nanowires for 3d silicon interconnection – low temperature compliant nanowire-polymer film for z-axis interconnect
… inter-chip interconnects. Anisotropic Conductive Film (ACF) technology is one of the low-temperature, fine-pitch interconnect method, which has been considered as a potential replacement for solder interconnects in line with continuous scaling of the interconnects in the IC industry. However, the …
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An AFM study of the surface of a polymer film bombarded by low energy gaseous ions
This research studies the radiation damage on polymeric materials caused by accelerated ions. Gaseous ions are accelerated to different energies between 10 keV and 50 keV at fluences up to 10$\sp{15}$ ions/cm$\sp2$ by 200 keV Whickham ion accelerator at room temperature. The 2 x 2 cm$\sp2$ …
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A study of contact between a profile meter stylus and polymer films on roughened substrates
When a polymer film is deposited onto a roughened substrate, the film masks over the underlying substrate roughness. Then when attempting to measure the roughness of the polymer film surface using a stylus-type profile meter, the pressure between the tip of the stylus and the film is sufficient to …
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Surface Analysis Applied to Thin Films of Molecular Solids
Finally, some preliminary results with polymer film assemblies were presented. Although the major problems of charging and film rupture were avoided, the research was handicapped by a loss of the components of interest, which were low concentration of organic compounds dispersed in the polymer …
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The Electrochemistry of Corrosion Inhibitors in the Oil and Gas Industry
… be violent microscopic ruptures of an overlying polymeric film that exposes regions of the underlying steel surface to corrosive attack. This polymer film was found to be persistent: as long as the established coating was not damaged the total inhibitor volume could be decreased after an initial …
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The Formation and Characterisation of a Polypyrrole Based Sensor for the Detection of Urea
… albumin (BSA). The BSA was incorporated into the polymer film during electropolymerisation from an aqueous solution of pyrrole monomer, BSA and NaCl as a supporting electrolyte. The presence of the BSA within the polymer film was confirmed using cyclic voltammetry, electrochemical impedance …
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Modification of electrodes by electronically conductive polymer blends
… limiting factor for overall charge delivery in a polymer film coated on an electrode surface. Our goal was to find a better conducting polymer matrix to explore the enhancement of electron transport. Our solution was to use $\pi$-conjugated, electronically conductive polymers as modifiers of …
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Design and fabrication of nanostructures for thermal conductivity measurements and picosecond acoustics
… First, fabrication of sub-10nm fluorocarbon films is presented for thin film thermal conductivity measurement. Thermal conductivity of this ultra-thin polymer film is especially interested in phonon study due to its atomic confinement in one dimension. Using plasma polymerization technique, …
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Polarization-independent Liquid Crystal Devices
… modulators. For amplitude modulations, a new polymer-dispersed liquid crystal (PDLC) and two new dye-doped LC gels are polarizer-free by combining light scattering with dye-absorption effects. In phase modulation, we explore five device concepts: PDLC and Polymer-Stabilized Cholesteric Texture …
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Gas permselectivity in amorphous linear and crosslinked poly(arylene ether ketones)
… on the gas transport properties through a dense polymer film of amorphous Poly(Arylene Ether Ketones) or PEK. The methodology for the preparation of crosslinked maleimide terminated PEK (or MIPEK) films from several blend ratios of different molecular weights of MIPEK is discussed in detail. The …
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Applications of room temperature ionic liquids in interfacial polymerization
… In this dissertation, polyurea and polyamide films with surface nanostructures were synthesized by interfacial polymerization (IP) with ILs without stirring. Both polymers were prepared at the interface between n-hexane and a series of 1 -alkyl-3-methylimidazolium ILs. Nanoporous or …
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Utilizing Hybrid Plasmon Modes to Probe Nanoparticle-Polymer Interfaces
Nanoparticle-polymer composite materials have widespread applications in fields such as: sensing, electronics, and biology, due to their desirable physical properties. However, many fabrication techniques render little control over nanoparticle incorporation, and homogeneity of the resulting …
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The effects of load, frequency, slip amplitude, humidity and film thickness of polyvinyl chloride on fretting corrosion
… frequency, amplitude of slip, humidity, and film thickness of polyvinyl chloride on fretting corrosion. In particular, this study describes the effects of these parameters on the polymer film life and also on the wear of the metal surfaces after metallic contact had occurred. The two levels …
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Globally Optimal Robust Control for Large-Scale Sheet and Film Processes
Sheet and film processes such as polymer film extruders, paper machines, and coating processes are large scale and high speed. Addressing model uncertainty for these processes is critically important because model uncertainty can cause the closed loop system to perform poorly. Here an approach is …
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Diffusion kinetics and phase separation phenomena during asymmetric membrane formation
… times and concentration profiles on both the polymer film and coagulation bath sides before the onset of phase separation. Results clearly show that final membrane structure is quite sensitive to the evaporation time with significant membrane property changes occurring as a result of a 20 …
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