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 22 for “"Thin film fabrication"”.
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Directed self-assembly of block copolymers with functional materials : a study of nanocomposite thin film fabrication on graphoepitaxial templates
… First, we focused on constructing nanocomposite thin films composed of BCPs and various types of functional materials (i.e., inorganic ions, inorganic-organic complex, organic compounds and nanoparticles). Based upon this methodology, we developed novel ways of fabricating mesoporous thin film …
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ALN/ALSCN Acoustic Resonant Systems Based on Ultra-Thin Piezoelectric Films
… is to introduce several advances into ultra-thin aluminum nitride/aluminum scandium nitride (AlN/AlScN) based acoustic resonant systems. Various microelectromechanical system (MEMS) acoustic resonators — surface acoustic wave (SAW), thin-film bulk acoustic resonator (FBAR), and Lamb wave …
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New pyroelectric phenomena from graded ferroelectric barium strontium titanate thin films
… potential application of graded ferroelectric thin films in uncooled pyroelectric detectors. We built a magnetron sputter system, and developed a method of deposited compositional graded ferroelectric thin films using rf magnetron sputtering, a silicon compatible thin film fabrication process. …
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Design, Fabrication, and Characterization of an Electrostatically Actuated Microfluidic Valve
… Each device encountered complications during fabrication which led to improved fabrication guidelines for future devices. Designing and fabricating these concept devices required the development of several new processes in the clean room, including RIE Plasma bonding, PDMS sputtering …
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Excitons in the thallous halides
A thin film fabrication technique resulting in a considerable reduction in strain has been developed and has facilitated the optical and magneto-optical experiments on the Thallous Halides. The strain reduction achieved has revealed optical spectra of exceptional sharpness, Previously undiscovered …
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Linear Optical Thin Films Formed by Electrostatic Self-Assembly
… possesses great advantages over traditional thin film fabrication methods, making it an excellent choice for a number of applications in the fields of linear and nonlinear optics, electronics, sensing and surface coatings. The feasibility of fabricating linear optical interference filters by …
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Solar energy conversion via photovoltaics and photocatalysis
… conformal vacuum-based technique to enable thin-film fabrication of insoluble polymers at moderate vacuum (~ 0.1 Torr) and low temperature (25 150 °C). Moreover, oCVD carries the well-cited processing benefits of vacuum processing, such as parallel and sequential deposition, well-defined …
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Electrostatic Self-Assembly of Linear and Nonlinear Optical Thin Films
… to fabricate linear and nonlinear optical thin films and components. The ESA process involves the layer-by-layer alternate adsorption of anionic and cationic complexes from aqueous solutions. Selection of the molecules in each layer, their orientation at the molecular level, and the order …
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Comparative Investigation of LIBS Spectra and Crater Morphology During Laser Ablation of Eutectic BiSn Alloys
… ablation, the ability to control the resultant thin-film stoichiometry remains a significant challenge. Unfortunately, resolving those problems is hindered by additional critical gaps in our knowledge such as the evolution of the crater morphology, the degree of consistency in elemental …
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Processes and Materials for Organic Photovoltaics
… new processes that broaden the application and fabrication space for these devices. The application of electro-polymerization, a deposition process, towards organic thin-film fabrication is discussed. This novel process for OPVs is followed by an analysis of new and interesting materials for OPV …
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Experimental and theoretical study of an integrated silicon Mach-Zehnder interferometer for chemical sensing applications
This thesis involves the design, fabrication and characterization of an integrated optical waveguide sensor. Prior to fabrication, design parameters of the waveguide need to be determined and optimized. The waveguide parameters such as waveguide dimension and the refractive index of the core and …
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Fluorescent Materials and Thin Film Coatings for Temperature Sensing Applications
… correction. Integrating these phosphors into thin film structures is especially valuable for applications involving transparent windows or in scenarios where uniform coatings are needed. Among the various thin film fabrication techniques, e-beam deposition and ion assisted deposition (IAD) …
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Dry-transfer of chemical vapour deposited nanocarbon thin films
… The technologies developed could be employed as thin film field emission sources, optical sensors and substrate-free wideband optical polarisers. Detailed studies were performed on CVD Fe and Ni catalysed carbon nanotubes and nanofibres on indium tin oxide, aluminium and alumina diffusion …
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Implantable Bioelectronics with Integrated Shape Actuation for Minimally Invasive Neural Interfacing
… the integration of fluidic soft robotics with thin-film bioelectronics is explored to create minimally invasive neural interfaces. Electrocorticography is an established neural interfacing technique wherein an array of electrodes enables large-area recording from the cortical surface. …
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Synthesis and characterisation of Titania thin films
The thesis presents publications reporting TiO2 thin film fabrication by spray pyrolysis. A conceptual model of spray pyrolysis mechanism was developed and validated as a diagnostic tool to explain the deposition process, which shows that CVD can be achieved by this method. Effect of deposition …
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Underlying Mechanisms of Halide Perovskites Properties and Metal Insulator Transitions in Vanadium Dioxide
… high carrier mobilities, easy synthesis, thin-film fabrication, and low production costs. The efficiency of perovskite solar cells has rapidly increased, reaching 32.5% in 2023 from a modest 3.8% in 2009. Despite this rapid growth, the underlying mechanisms driving the high …
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Synthesis and Characterization of pure-phase Zr-MOFs Based on meso-Tetra(4-carboxyphenyl)porphine
… mimic biological and enzymatic systems. Nano-thin film fabrication of porphyrin-based MOFs broadens their application range, making it possible to use them in the construction of photovoltaic and electronic devices. Chapter 2: The reaction of zirconium salts with …
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Flexible electronics : materials and sensor fabrication
… how to fabricate piezoelectric/pyroelectric thin films by using different printing techniques. These techniques could replace vacuum techniques for manufacturing piezoelectric/pyroelectric sensors. Ink-jet, screen and stencil printing techniques were developed to print these devices. This …
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Novel Functional Polymeric Nanomaterials for Energy Harvesting Applications
… are proposed by developing advanced nanofabrication methods. The focus is on ferroelectric polymeric nanomaterials, as this class of materials is particularly well-suited for both piezoelectric and triboelectric energy harvesting. The thesis is broadly divided into two parts. The first …
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Engineering of Alkali Metalorganic Precursors: Synthesis to Mechanistic Aspects
… in various applications such as precursors for thin-film fabrication of oxides, fluorides, or nitrides in the field of electronics and optoelectronics devices, optical applications, catalysis, corrosion protection, etc. In particular, derivatives having M-O bonds, namely metal alkoxides, …
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