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 980 for “"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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Microvortices In Droplets: Generation & Applications
… deals with the manipulation of nL-fL droplets encapsulated within an immiscible carrier phase. The droplets are used as reaction containers for biochemical assays, enabling drastic reduction in assay volumes needed for modern life sciences research. To achieve this, basic laboratory …
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Optical Deformation of Emulsion Droplets
… traps. Optical deformation of microemulsion droplets has previously been demonstrated for systems with ultra-low interfacial tension. A disadvantage of the systems used was the strong temperature-dependence of the interfacial tension. I have explored options for creating …
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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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Active emulsion droplets driven by Marangoni flow
Diese Forschungarbeit beinhaltet Theorie und Simulation aktiver Emulsionstropfen, die aufgrund einer inhomogenen Oberflächenspannung auf ihrer Grenzfläche schwimmen. Der zugrundeliegende Effekt heißt Marangoni-Effekt. Eine Möglichkeit den Marangoni-Effekt zu nutzen um einen Tropfen in Bewegung zu …
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Displacement of Fluid Droplets From Solid Surfaces
The displacement of fluid droplets from solid substrates is a fundamental problem of fluid mechanics. This problem has application in coating operations, enhanced oil recovery and vapor condensation. Our goal is to predict the yield conditions (capillary number Ca) as a function of physical …
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Oxidation of Sulfur-Dioxide in Fog Droplets
Made available in DSpace on 2014-12-05T17:15:20Z (GMT). No. of bitstreams: 1 0018124.pdf: 4330307 bytes, checksum: 33f63df1827b40d6a443e0edb5ed3215 (MD5) Previous issue date: 1956
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The Impact Dynamics of Weakly Charged Droplets
… often found in naturally or artificially formed droplets, such as raindrops and those generated by Kelvin's water dropper. In contrast to the impact of neutral droplets on a flat solid surface upon which a thin convex lens shape layer of the gas film is typically formed, I show that the delicate …
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MANIPULATION OF ELECTROSPRAY GENERATED DROPLETS USING VARIOUS VAPORS
… gas to manipulate electrospray generated droplets. These reagent vapors are admitted into the atmospheric interface region of a QqTOF tandem mass spectrometer. The electrospray droplets interact with the reagent vapors between the curtain and orifice plate for approximately a millisecond, …
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Evaporation of biomass pyrolysis oil as single droplets
… usually introduced into the burner as sprays of droplets; therefore, the evaporation behaviour of individual fuel droplet has an important role in understanding of the combustion characteristics of the droplets in spray combustion and in the burner performance. Single droplet …
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Evaporation-induced non-wetting droplets on superhydrophilic surfaces
… altered by superheating the substrate such that droplets can reside in a non-wetting state due to evaporation. Photolithography and deep reactive ion etching were used to fabricate well-defined silicon micropillar arrays with a square pattern with varying pillar diameter, height, and …
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Droplet IO : programmable droplets for human-material interaction
In this thesis, I propose aqueous droplets as a form of programmable material that can computationally transform its physical properties. Liquid matter can undergo physical transformation through interfacial forces and surface tension. I introduce a system called DropletIO to regulate interfacial …
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The combustion of droplets of heavy liquid fuels
Thesis: Sc. D., Massachusetts Institute of Technology, Department of Chemical Engineering, 1954
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Electrowetting study of jumping droplets on hydrophobic surfaces
… energy during the coalescence of microscale droplets, resulting in droplet ejection from the condenser surface. This conversion of energy is fundamentally studied by using electrowetting to decrease the equilibrium contact angle, increasing droplet surface area. Releasing the voltage allows …
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Impact and Departure Dynamics of Droplets and Bubbles
Droplets and bubbles are important for understanding natural phenomena such as falling raindrops, airborne disease transmission, and plant respiration systems, and also for engineering contexts such as semiconductor fabrication, nuclear power plants, and electronics cooling. However, still, more …
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