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 15 of 15 for “"equilibrium shape"”.
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The equilibrium shape of NaCl single crystal studied by x-ray reflection on its surfaces
The equilibrium shape of NaCl single crystals has been studied by x-ray reflectivity measurements at high symmetric surfaces. The equilibrium shape of a crystal is related to the properties of its surfaces through its surface free energy by means of the Wulff construction. Glancing angle x-ray …
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A numerical model for the axisymmetric equilibrium shape of drops in uniform motion: Effects of external flow, electric field and surface charge
In the past the best models of raindrop shapes were based on a perturbation form of Laplace's formula valid only for small amplitude distortion from the effect of an aerodynamic pressure around a sphere. In contrast, the current force balance model uses the complete form of differential Laplace's …
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A laboratory investigation of raindrop oscillations
Knowledge of raindrop shape is crucial to analyses of microwave scattering from precipitation, including the use of polarization radar in inferring the rainfall rate. The equilibrium shape of a water drop falling in air is nearly a sphere for millimetric drops, while larger drops are increasingly …
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Investigation of a flexible inextensible composite membrane reflector
… composite membrane with a precise geometric shape. The development work based on this investigation successfully proved the feasibility of the concept. A prototype membrane employed as a parabolic reflector antenna was fabricated and subsequently evaluated in terms of its functional …
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Elastic and inelastic responses of columns after sudden loss of bracing
… at the brace and the top of the column, and the equilibrium shape of the column is determined. The critical loads for the perfect column are computed analytically for several load combinations. The dynamic response of the column after sudden loss of bracing is analyzed using Galerkin’s method. …
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Fluidic Assisted Fabrication of Elastomer Optical Lenses Using Capillarity
… small-sized polymeric lenses with plano-convex shape can be fabricated. The work described in this thesis proposes a fast, repeatable, and cost effective method of producing bi-convex and plano-convex polymeric lenses utilizing the capillarity effect at liquid-liquid interface. It was …
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Three Essays On The Acquisition Of Information
… generates interesting predictions about the equilibrium shape of the price distribution on the advertising behavior of the firms and the interactions between informative advertising and competition.;In auctions, the seller's problem derives from the fact that he has imperfect information …
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Microplastic deformation of polycrystalline silver chloride containing a small volume fraction of hard inclusions
… loaded to strains of 90 to 250 microstrain. The equilibrium shape of prismatic loops under stress compares favorably to a dislocation-based model which incorporates the matrix friction stress and the orientation dependence of a dislocation's line energy. Additionally, the role that grain triple …
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The effect of AC magnetic fields on liquid-metal free surfaces in industrialMHD
… problems: the first is to calculate the rest shape of an infinite strip of liquid resting on a substrate in a vertical gravitational field; the second is to calculate the equilibrium shape of the cross-section of a column of a liquid conductor submitted to a high-frequency magnetic field whose …
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First-principles modeling of thermal stability and morphology control of cathode materials in Li-ion batteries
… surface energies, we provide the thermodynamic equilibrium shape of a LiMPO₄ crystal under vacuum. We furthermore establish an ab initio approach to study surface adsorption and Li dissolution in aqueous solutions. We demonstrate for LiFePO₄ that ab initio calculations can be used effectively to …
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Sequence Dependent Elasticity of DNA
… along, and the linear response around, a general equilibrium shape are explored.
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Multiblock Thermoplastic Polyurethanes For Biomedical and Shape Memory Applications
… synthesized and characterized for biomedical and shape memory applications.</p> <p>In the first case described in Chapters 2, 3 and 4, a novel family of multiblock thermoplastic polyurethanes consisting of poly(caprolactone) (PCL) and poly(ethylene glycol) (PEG) are presented. These materials were …
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The control of wind and waves on sediment transport asymmetry and the long-term morphological development of estuaries
Most theories on the equilibrium shape of estuarine basins highlight the dominance of tidal asymmetry in controlling the hydrodynamic and morphodynamic feedbacks that ultimately lead to a stable morphological state. This thesis uses field measurements, numerical modelling and sediment deposition …
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Microscale actuators from carbon nanotube and hydrogel composites
… and these forests can be grown in predefined shapes by depositing the growth catalyst in the desired pattern using lithography. VACNTs act as pseudo-blackbodies, absorbing up to 99% of light over a wide wavelength range from UV to far IR. This allows the CNTs in the composite hydrogel to …