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 28 for “"EHD"”.
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Diagnostic techniques for EHD and MHD interaction
… (MHD) and Electro- Hydro-Dynamic (EHD) interactions are potentially able to suitably modify the fluid-dynamics characteristics around a flying body without utilizing moving parts. This could lead to the control of an aircraft with negligible response time, more reliability and …
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Electrohydrodynamic (EHD) printing of microparticle streams for additive manufacturing
Electrohydrodynamic (EHD) printing can be used to fabricate high resolution (~100 nm) features at high rates (~10 kHz), and is compatible with a wide range of materials. However, conventional EHD printing techniques focus only on homogeneously dispersed functional inks, including nanoparticulate …
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Space Charge Reduction in an Ehd Generator via Fluidic Switching
Made available in DSpace on 2014-12-13T19:55:32Z (GMT). No. of bitstreams: 1 8009000.pdf: 3431933 bytes, checksum: 6847f02737ca4b0d23b4daa430b2af43 (MD5) Previous issue date: 1979
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EHD Enhanced Heat Transfer in a Metallic and a Ceramic, Compact Heat Exchanger
Electrohydrodynamic (EHD) heat transfer enhancement has enormous potential to increase heat transfer rates while minimizing heat exchanger size. The aircraft industry, for one, could benefit using EHD heat transfer enhancement. Engineers can change their design approach and plan for minimal loads, …
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The role of EHD proteins in caveolae, and the role of caveolae in adipocytes
… knock-in and knockout cell lines, the role of EHD proteins at caveolae was investigated. It was found that, in addition to EHD2 being at the neck, both EHD1 and EHD4 were also present. The recruitment of other EHD proteins was markedly increased in the absence of EHD2. This functional …
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Coolant distribution control in satellite structural panels using electrohydrodynamic conduction pumping
Electrohydrodynamic (EHD) conduction pumping is well suited for pumping coolants in space-borne thermal control systems. Advantages of EHD pumps include light-weight, simple designs, no moving parts, fast response times, and low power consumption. The EHD conduction pumping phenomenon is a result …
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The impact of variation in the Toll-like receptor 3 gene on epizootic hemorrhagic disease in Illinois white-tailed deer (Odocoileus virginianus)
Epizootic hemorrhagic disease (EHD) is of concern to hunters, wildlife managers, and state agencies as it leads to death in white-tailed deer (Odocoileus virginianus). The EHD virus (EHDV) is a double-stranded (ds) RNA virus and is transmitted by midges of the genus Culicoides. Toll-like receptors …
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Numerical Analysis of Transient, Line-Contact Problems in Elastohydrodynamic Lubrication
Elastohydrodynamic (EHD) lubrication is a lubrication process which usually occurs in concentrated load-supporting or load-transmitting contacts. Such contacts exist, for example, in rolling-element bearings, gears and cam-follower mechanisms. In EHD lubrication, the contact surfaces are not only …
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Episodic Heavy Drinking and Marijuana Use Among Undergraduate Students at Western Kentucky University
… has documented that Episodic Heavy Drinking (EHD), defined as consuming four or more and five or more alcoholic drinks per drinking episode among females and males, respectively, is a prevalent risk behavior among undergraduate college students throughout the United States. Moreover, studies …
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Transport of free excitons and electron-hole droplets in silicon and germanium
… free excitons (FE) and electron-hole droplets (EHD). The mobilities of both species are largely controlled by interaction with lattice phonons. Non-equilibrium phonon fluxes are capable of moving EHD macroscopic distances in ultrapure crystals of silicon and germanium. Both the FE and the EHD …
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The Effect of Surface Irregularities on The Elastohydrodynamic Lubrication of Sliding Line Contacts
… irregularities on the elastohydrodynamic (EHD) lubrication of sliding line contacts is presented. A series of case studies illustrates the effect of furrow, asperity, and wavy surface irregularities on the pressure distribution, film thickness, and subsurface octahedral shear stresses in …
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Array -Based Direct Writing of Micro/nano Scale Structures
… scale patterns using the electro-hydrodynamic (EHD) printing process.
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Electrohydrodynamic enhancement of extraterrestrial capilliary pumped loops for nuclear applications
… a capillary pump loop. The results suggest the EHD gas pumps could offer improved performance and it is recommended experiments should be performed in future work with an EHD gas pump in a CPL for verification. A new design for the electrohydrodynamic evaporator is also developed for enhanced …
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DNA Inspired Tools for Biosensor Design
… 4 explores the use of an electrohydrodynamic (EHD) inkjet printer capable of depositing femtolitre volumes for the preparation of DNA microarrays. While such printers have been utilised for creating biomolecule patterns on various surfaces, few studies have investigated their impact on current …
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Novel processing of porous bioceramic structures
… the feasibility of using electrohydrodynamic (EHD) atomisation to produce foams with graded porosity as a ‘one-step’ processing method, using zirconia as the ceramic material due to its extensive use in industrial and biomedical applications. Modifications have been made to the electrospraying …
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Luminescence studies of the excitonic system in germanium: Phase properties and transport
… is used to study the electron-hole droplet (EHD) cloud in Chapter IV. By applying stress along a <110> axis, the two conduction band valleys perpendicular to the stress axis can be emptied of electrons in the EHL phase. This alteration of the electron Fermi surface causes remarkable changes …
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A hybridized discontinuous Galerkin formulation for modeling electrohydrodynamic thrusters
Electrohydrodynamic (EHD) thrusters utilize ion neutral collisions in air to produce a propulsive force. The ions are generated at an emitting electrode in an asymmetric capacitor by a corona discharge. This thesis presents a Hybridized Discontinuous Galerkin (HDG) formulation for solving the EHD …
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Combined effect of electric field and surface modification on pool boiling of R-123
… is known as electrohydrodynamic abbreviated as EHD-enhancement. A high voltage potential was applied at the electrode located above the heating surface, which was earthed. The voltage was varied from 0 to 30 kV. The uniform electric field was provided through a 40 mm diameter circular electrode …
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Numerical Modeling of Deformation, Oscillation, Spreading and Collision Characteristics of Droplets in an Electric Field
… field induced flows, or electrohydrodynamics (EHD), have been promising in many fast-growing technologies, where droplet movement and deformation can be controlled to enhance heat transfer and mass transport. Several complex EHD problems existing in many applications were investigated in this …
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High current ion emission in electrohydrodynamic spraying
… liquid tip. We have conducted experiments with EHD spraying of the GaIn eutectic alloy. These experiments provide considerable new information on the nature of the emission process. Quantities measured include the number of neutral atoms emitted with the ions, the spectrum of the light which …
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