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 255 for “"Microparticles"”.
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Experimental investigations of drying droplets containing microparticles and mixtures of Poly(ethylene oxide) microparticles
… droplets containing suspensions of polystyrene microparticles with diameters ≤0.5μm vary with experimentally controlled parameters, including particle size, contact angle, concentration, evaporation rate and orientation of the droplets. Our studies found, for the first time, that the drying rate …
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High-Velocity Impact of Metal Microparticles
… (LIPIT) has enabled direct imaging of individual microparticles as they impact a substrate at velocities of hundreds or thousands of meters per second. This technique allows for precisely controlled high-throughput impact testing, creating new opportunities for the study of material behavior under …
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Keratin Microparticles for Drug and Cell Delivery
… emulsion synthesis procedure to produce keratin microparticles using an oxidized keratin derivative, keratose (KOS). Analyses of particle size, microstructure, and other characterization techniques were performed. Drug loading characteristics, release kinetics, and feasibility of use in two …
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Cubosome and Hexosome Microparticles: Shape, Rheology, and Templating
Cubosomes and hexosomes are soft particles of cubic and hexagonal phases, formed by self-assembled amphiphilic lipids. They have attracted great attention because of applications in drug delivery. Cubosomes and hexosomes have been produced at the nanoscale, exhibiting unique shapes and symmetries, …
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Development and characterisation of photosensitiser-incorporated polymeric microparticles
… of photosensitiser (PS)- incorporated polymeric microparticles, optimising the photodynamic antibacterial activity exerted. Specifically, their ability to reduce the bacterial bioburden of solutions, with low visible light illumination, was studied. An oscillatory ball milling process was …
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Capillary Assembly Of Microparticles On Curved Fluid Interfaces
… promise as a tool to orient and assemble microparticles on interfaces between two immiscible fluids. Microparticles trapped at an interface deform the interface around them due to particle geometry, surface roughness, external fields and body forces. When particle deformations overlap, …
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Characterization of Biodegradable Polymeric Microparticles for Controlled Release
The formation of microcapsules is a complex process relying on thermodynamic, kinetic and other factors such as the physical drug. Continued study in the microparticle arena will help achieve better control of release and allow for application of more potent therapeutics.
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Rational design of microparticles for enhanced fragrance delivery
… laundry products: 1. Fragrance loading in microparticles can prevent premature release of the fragrance and adverse interactions between the fragrance and other ingredients in a product formulation both during storage and during the application process. 2. Fragrance adsorption onto a …
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Manufacture of microparticles for use in eletrophoretic displays
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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MICROMANIPULATOR-RESONATOR SYSTEM FOR SELECTIVE WEIGHING OF INDIVIDUAL MICROPARTICLES
Over the past decade, MEMS-based cantilever sensors have been widely used in the detection of biomolecules, environmental pollutants, chemicals and pathogens. Cantilever-based sensors rely on attachment of target entities on their surface. The attachment causes either change in surface stress or …
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Circulating cell-derived microparticles – potential markers of cardiovascular risk
Circulating cell-derived microparticles, released from cells during activation and apoptosis, are involved in inflammation, coagulation and endothelial dysfunction, all important processes in the development of cardiovascular disease. This project aimed to adapt and validate a flow cytometric assay …
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Multi-channel tag based on fluid-suspended magnetic microparticles
The applications of magnetism are far reaching, and much work has been done to make use of magnetic properties to develop viable applications. Two key areas are solid state memory, for example MRAM and hard discs, and the use of superparamagnetic nanoparticles in biological applications by using …
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Microfluidic synthesis, characterization, and applications of bioinspired deformable microparticles
Polymeric microparticles have a wide variety of uses, ranging from traditional applications in paints and coatings, to specialized applications in medical therapeutics and diagnostics. For biological applications - including drug delivery, analytical assays, and tissue engineering - it is important …
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Macrophage-hitchhiking Anisotropic Microparticles for Therapeutic and Diagnostic Applications
… cellular platforms, where anisotropic microparticles and macrophage, a type of innate immune cells, were employed. Specifically, I developed and engineered discoidal microparticles that can hitchhike on the macrophage surface but resist phagocytosis due to their anisotropic morphology. …
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Synthesis of biodegradable hydrogel microparticles for vaccine protein delivery
Soluble protein antigens used in vaccines have shown lower immune responses when compared with certain particulate forms of these same antigens. For example, it has been shown that micro- and nano-particle mediated delivery of protein antigen can use up to 100 times less protein and still produce …
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Stabilization of weakly charged microparticles using highly charged nanoparticles
An experimental investigation was conducted to evaluate the possible use of highly-charged spherical nanoparticles to stabilize an aqueous dispersion of weakly-charged microspheres. At low pH values, the surface of silica is weakly charged, which leads to flocculation of colloidal suspensions of …
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Mechanics of Microparticles in the Context of Structure and Functionality
The present work focuses on mechanical properties of particulate systems with colloidal dimensions. In particular, the interrelations of morphology, medium and mechanics are studied as well as the particles’ functionality and the tuning thereof in the context of mechanical properties. The latter is …
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Preparation of anisotropic microparticles and their behaviour at liquid interfaces
Monolayers of solid particles at the liquid- fluid interface are of considerable interest in both academia and industry. Their behaviour during compression and expansion experiments in a Langmuir trough has important implications on particle stabilisation of foams and emulsions. This has been known …
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Preparation and characterization of multifunctional chitosan microparticles for lung delivery
… nanoparticles were incorporated into chitosan microparticles along with gemcitabine by spray drying using a Buchi Mini Spray dryer B-290. The particle size of iron oxide nanoparticles determined by laser light scattering was 123.15 ± 12.98nm (n=3). However, the TEM results revealed a particle …
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