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 20 for “"glass materials"”.
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Planar chalcogenide glass materials and devices
… we focus on the development of novel photonic materials and devices that address the emerging need in the field of biochemical sensing. Chalcogenide glasses have been identified as the material of choice for sensing due to their wide infrared transparency window; on the device side, we have …
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Chalcogenide glass materials for integrated infrared photonics
Chalcogenide glasses (ChGs) are amorphous compounds containing the chalcogen elements (S, Se, Te) and exhibit wide infrared transparency windows. They are easy to synthesize in bulk and thin film forms and their compositional flexibility allows tuning of optical properties such as refractive index …
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The sol-gel synthesis of anti-stokes luminescent glass materials
The materials commonly used and the synthetic problems that arise in the field of transparent glass materials with anti-Stokes luminescent properties are described. The literature has shown that rare earth doped oxide glasses, whilst chemically durable and relatively easy to manufacture, have weak …
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Pulsed laser deposition of chalcogenide glass materials for potential waveguide laser applications
… are able to grow thin films of the chalcogenide glass; gallium-lanthanum-sulphide, gallium-sodium-sulphide and variations of oxysulphides, on a variety of substrates. EXAFS measurements have shown that some of the elements in the glass structure change their bonding arrangement when grown at …
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Densification Behavior of Ceramic and Crystallizable Glass Materials Constrained on a Rigid Substrate
… of zinc oxide and cordierite-base crystallizable glass constrained on a rigid substrate was studied to add to the understanding of the behavior of various materials undergoing sintering when subjected to external substrate constraint. Porous ZnO films were isothermally sintered at temperatures …
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Lightwave circuits for integrated Silicon Photonics
… obtained during the wet etching of silicon glass materials to engineer 3D structures. In parallel, the physics of whispering gallery mode resonators, both in silicon and in silicon glass materials, have been addressed. Silicon nitride Ultra High-Quality resonators have been demonstrated by …
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Energy exchange processes in erbium-doped fluoride glasses
… processes between ions in rare earth doped glasses and crystals. In particular interest has focused on diode-pumped lasers and optical waveguide amplifiers based on rare earth ions. This thesis is concerned with developing a model, which can explain the population and depopulation processes …
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Mechanical characterisation of float and laminated glass
In recent years, glass has experienced growth in its application within engineering and architecture, especially for structural applications [1]. It has been used as various components such as balcony walls, staircases, floors, roofs, and fa¸cades. As demand for secure and safe construction …
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Microwave appliance performance as affected by container geometry and material
… tube, loaf, and square containers made of clear glass, amber glass, thermoset polyester, and polysulfone. Unflavored gelatin, custard, and cakes were prepared three times in each of the 13 microwave containers. Evenness of cooking was determined by comparing meltdown and temperature in gelatin, …
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Laser micromachining of active and passive photonic integrated circuits
… high intensity pulses are applied to transparent glass materials to demonstrate micromachining of waveguides, gratings, couplers, and three dimensional waveguides and their beam couplings. Active and passive semiconductor devices can be monolithically integrated by employing high energy laser …
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Halo-fosfatų 31P, 1H ir 35Cl kietojo kūno BMR tyrimas /
Calcium phosphates (CaPs) are a family of materials used for various applications such as bone regeneration, catalysis, 3D printing, development of optical materials, etc [1]. Properties such as bioactivity, biocompatibility and osteoconductivity are necessary for CaPs in bioapplications [1, 3]. …
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Generalizing Under Data Scarcity. Enhancing the representation capability from few samples.
… Working with an Italian company specializing in glass inspection systems, we propose two domain-specific solutions. The first is a few-shot approach for structural glass defect classification, enabling flexible adaptation to new defect types and variations in glass materials. The second is a …
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Graphite immobilisation in glass composite materials
… disposal route. This thesis describes the use of glass materials for the immobilisation of irradiated graphite prepared by microwave, conventional and sparks plasma sintering methods. Several potential glass compositions namely iron phosphate, aluminoborosilicate, calcium aluminosilicate, alkali …
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The Degradation of Resin Materials Bonded to Dentine in the Root Canal by the Activation of Matrix Metalloproteinases
… resin based adhesive dental restorative materials have gone through in the last two decades, leakage in the resin-dentine interface is still a major limitation of resin based dental restorative materials. Dentine matrix metalloproteinases have been associated with this leakage through …
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Towards Glasses from Two-Dimensional Hybrid Organic–Inorganic Perovskites
… (HOIPs) are an emerging class of functional materials with exceptional potential in optoelectronics. While research has long focused on their crystalline states, recent discoveries have revealed that certain HOIPs can melt, and be quenched into frozen liquids, i.e., glasses, opening up new …
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Design and development of a sensory feedback system for transradial amputees using body powered prostheses
… percieved confidence and improved response time. Materials & Methods A sensory feedback system was developed using principles of rapid prototyping and testing. The system utilises capacitive sensors to mediate detection of proximity and touch, and makes use of a flex sensor to represent the …
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Evaluation of the Degradation of Methylene Blue Using Photocatalytic Materials
… bonds readily with any amorphous silica such as glass materials, paints and coatings, optics and LEDS, among many others. The ex-situ method introduces the development and application of a novel, photocatalytic, porous silica-based granular media (SGM) to be used in a packed bed column reactor. …
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Evaluation Of The Photo-induced Structural Mechanisms In Chalcogenide
Chalcogenide glasses and their use in a wide range of optical, electronic and memory applications, has created a need for a more thorough understanding of material property variation as a function of composition and in geometries representative of actual devices. This study evaluates compositional …
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Electron beam lithography of molecular glass resist films prepared by physical vapor deposition
… as well as the development of further improved materials are essential. Favored exposure methods of the next generation lithography are extreme ultraviolet lithography or multi-beam electron beam lithography, as these techniques provide the opportunity of patterning smaller feature sizes. In …