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 8 of 8 for “"electro-osmosis"”.
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Experimental investigation of induced-charge electro-osmosis
… analyze the general phenomenon of induced-charge electro-osmosis (ICEO), nonlinear electro-osmotic slip generated when an electric field acts on its own induced charge around a polarizable surface, in the context of microfluidics. Simple ICEO flows are first observed around a platinum wire in a …
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Estudo da eletro-osmose em solos finos
By using laboratory experiments, electro-osmosis in fine grained soils was surveryed under two dffferent aspects: the electro-drainage and the electro-hardenig. In relation to the electro-hardening, solutions of chemical products were injected into soil specimens by electro-osmosis, and the effects …
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A study of electrochemical transport and diffuse charge dynamics in nanoscale devices using a Langevin equation
… new numerical and computational tools to study electrochemical transport and diffuse charge dynamics at small scales. Previous efforts at modeling electrokinetic phenomena at scales where non-continuum effects become significant have included continuum models based on the Poisson-Nernst-Planck …
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Electrokinetics in the Earth
… In this thesis study of frequency-dependent electrokinetics is presented with both theoretical development and experimental verification. The complex (real and imaginary) streaming potential coupling coefficient is explained. This is followed by the first experiments to measure the real and …
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Modeling of Bio-inspired Jellyfish Vehicle for Energy Efficient Propulsion
… harvester, operating temperature regimes, and electromechanical efficiency as a function of dimensional and physical variables. The model provided limit cycle operation regimes which can be tuned using physical variables to meet the specific environment. Buoyancy control is used in aquatic …
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Characterization of Pressure-Driven and Electro-Kinetically Driven Flow in a Micro-Fluidic Chip Using Particle Imaging Velocimetry
<p>The flow profiles of pressure-driven and electro-kinetic driven flows were compared for a microfluidic chip. It was found that the pressure-driven flow had a parabolic profile while the electro-kinetic flow had a plug shaped flow profile. The measured velocities were similar to those determined …
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Thermally Developing Electro-Osmotic Convection in Circular Microchannels
<p>Thermally developing, electro-osmotically generated flow has been analyzed for a circular microtube under imposed constant wall temperature (CWT) and constant wall heat flux (CHF) boundary conditions. Established by a voltage potential gradient along the length of the microtube, the …
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Numerical Simulations in Electro-osmotic Flow
… the physical driving mechanism that exists in electro-osmotically generated flow with large channel diameter-to-Debye length ratios (Z). The physics of the flow field were compared between the moving wall model (MWM) and electro-osmotic flow (EOF) at Reynolds numbers of 1 and 1800, and Z > …