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 12 of 12 for “"Sessile droplets"”.
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Shedding of Multiple Sessile Droplets
… can be shed, if the drag force overcomes the droplets adhesion force. Presence of other sessile droplets, in proximity, changes the drag force, so the minimum airflow velocity required to shed the droplets (Ucr) can vary. In this thesis, an experimental study on shedding of the multiple …
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On the evaporation of sessile droplets
In this thesis the evolution of sessile droplets in different modes of evaporation and their lifetimes are investigated. The thesis focuses on situations in which the diffusion of vapour into the surrounding atmosphere is the rate-limiting mechanism of evaporation. First, we describe the evolution …
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Sessile droplets of salt solutions on inert and metallic surfaces
… we investigate the evaporation behaviour of sessile droplets of aqueous saline solutions on planar inert and metallic surfaces and characterise the corrosion phenomenon for iron surfaces. First we study the evaporation behaviour of sessile salty droplets on inert surfaces for a wide range of …
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Electrohydrodynamic Manipulation of Sessile Droplets by the In-Plane Electric Fields
… (with DC voltages in the kV-range applied) on sessile droplets of multiple pure liquids, solvents, colloidal suspensions (with particles and pigments) and conducting polymers commonly used in painting and coating processes. This fundamental research aims at understanding the principles and …
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Characterization and Engineering of the Process of Directed Particle Self-assembly in Thin Films and Sessile Droplets
… over their electro-optical functionality. A sessile droplet templating technique was developed for fabricating arrays of discrete colloidal crystal patches of controlled shape and size. The process of assembly was studied in detail for each motif to optimize the deposition conditions and …
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Mathematical modelling of droplet evaporation
… the theoretical modelling and analysis of sessile droplets of liquids as they evaporate in different modes of evaporation. The thesis focuses on diffusion limited evaporation in which the diffusion of vapour in the surrounding atmosphere governs the evaporation rate of the droplet.;First, …
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Influence of forced convection on sessile droplet evaporation
… systems can leverage the evaporation of sessile droplets to implement this effect for different cooling applications. In the case of human perspiration, droplet evaporation typically occurs under exposure to moving air, or forced convection. However, current approaches to understanding …
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Analysis and feasibility of an evaporative cooling system with sessile droplet evaporation to provide cooling for microprocessors
… Processor using diffusion based evaporation of sessile droplets. An analytical model is developed to determine the capacity of a single layer of droplets to provide sufficient cooling. It is found that a single layer can provide sufficient cooling for the processors with tiny droplets. A …
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A Study of Dew Harvesting and Freezing Performance of Non-Wetting Surfaces
… infused surfaces have the ability to shed water droplets with lower nucleation times, taking advantage of more of the limited amount of time available to collect dew and fog than traditional surfaces. However, existing studies focus on short durations with scant information available on the …
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Sessile Droplet Microfluidic Platforms for Improvements in Mass Spectrometry Sample Preparation
Sessile droplet microfluidic devices (SDMF) allow for small, uniform liquid volumes to be arrayed, addressed, and manipulated independently. SDMF platforms diverge from typical flow-based lab-on-a-chip (LOC) devices while maintaining their advantages (low sample consumption, high throughput, and …
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The Effects of Surface Topography on Droplet Evaporation and Condensation
… However, most previous studies focused on the sessile droplets on one flat surface in the open space, and the effects of surface topography, i.e., surface curvature or configurations, on droplet evaporation and dropwise condensation are still elusive. This dissertation aims to explore …
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Interactions of Cellulose Nanocrystals in Colloidal and Composite Systems
… in aqueous suspensions of CNCs in evaporating sessile droplets. This system provides a complex interrelationship between mass, heat, and momentum transport which collectively provide a change in the local CNC concentration as a function of time. CNC interactions can be controlled throughout the …