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 47 for “"anisotropic materials"”.
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Integrated Photonic Functions Using Optically Anisotropic Materials
… we will investigate the prospects of optically anisotropic materials/structures as new emerging integrated platforms for tailoring the modal attributes of the waveguide modes. These concepts have been abundant in the field of metamaterials for free space applications. However, thus far the …
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On-line Nonlinear Characterization of Anisotropic Materials
… to characterize the nonlinear behavior of anisotropic materials in an on-line manner. The proposed framework applies recursive estimation and a multi-linear model to characterize the nonlinear behavior of anisotropic materials on-line using full-field strains, which are capable of capturing …
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Fabrication of Organized Anisotropic Materials via Evaporative Self-Assembly
… large, organized structures made from anisotropic nanomaterials using evaporative self-assembly. Chapter 1 is a literature overview of the characteristics and applications of solid gold nanostructures followed by a discussion of several important aspects of nanofabrication and a …
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Stress distribution at a three-dimensional singularity in anisotropic materials and composites.
… at a three-dimensional singularity in anisotropic materials and composites.
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Design of Phonon Polariton Propagation in Thin Layers of Highly Anisotropic Materials
La nanoóptica es un campo de investigación que estudia las interacciones luz-materia a escala nanométrica. Uno de sus objetivos clave es, por tanto, comprimir la luz en volúmenes mucho más pequeños de los que ocupa en el espacio libre, lo que se logra reduciendo considerablemente su longitud de …
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Development and validation of full-field indentation microscopy (FIM) for anisotropic materials
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Development of the Finite Difference Time Domain Method on a Lebedev Grid for Anisotropic Materials
… better represent the constitutive relations in anisotropic materials. The Lebedev grid extends the Yee grid by approximating Maxwell's equations with tensor constitutive relations using only central differences. A dispersion relation with stability criteria is derived and it is proven that the …
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Crack growth in unidirectional composites using singular finite elements and interactive computer graphics
… : (i) the formulation and application of an anisotropic singular element (ASE) for analyzing homogeneous anisotropic materials with cracks and, (ii) graphical simulation of crack growth in unidirectional composites. Lekhnitskii’s stress function method is used to formulate the traction-free …
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Some problems in anisotropic elasticity / Tristom Peter Cooke.
… problems within the area of the elasticity of anisotropic materials. The first problem concerns the calculation of stresses and strains within a concentric arrangement of cylindrical shells, where each shell has a differing set of anisotropic properties. This has immediate application to the …
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Pore Pressure Parameters and Cyclic Resistance Under Generalized Loading
… isotropic material have been extended to cross anisotropic materials, and it was shown that the principles are applicable even for cross anisotropic materials under generalized initial loading conditions.
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Investigation of Anisotropic Heat Transport Through Frequency Domain Thermoreflectance Technique
Thermophysical properties of thin film materials are of great importance for thermal management in devices including transistors, lasers, sensors, and plasmonic structures. In this thesis, I examine the characterization of heat transport in anisotropic materials through frequency domain …
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Random Actuation Pattern Optimization by Genetic Algorithm for Ultrasonic Structural Health Monitoring of Plates
… generate ultrasonic waves in both isotropic and anisotropic materials that can be effective in diagnosing structural defects. The formed ultrasonic waves can constructively interfere and send out an intense wave beam to a predetermined target. The constructed wave beams can be steered to …
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Imaging surface acoustic waves in anisotropic and periodic media
… this method particularly suited to examining anisotropic materials. The first section of this thesis deals with surface waves on crystals and other homogeneous solids. The general theory describing surface-wave behavior on anisotropic materials is adapted to our technique. In anisotropic …
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Scattering from imperfect interfaces
… scattering by an imperfect interface between anisotropic materials gives an indication of the peculiarities and the scale of effort involved in attempting to solve problems in these materials. Reflection and transmission at a perfect interface between generally anisotropic media was studied to …
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Simulation of micro-shaped charge experiments and analysis of shock states for a hyper-elastic solid
… charge experiment with different geometry and materials is simulated. Finally a newer topic of asymmetrical defective shaped charges is explored by means of simulations. It also advances on shock states for a hyper-elastic solid using the Blatz-Ko equilibrium relations and general conservation …
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Analysis of the Interface Properties of Multi-material 3D Printed Structures
… for evaluating the non-uniform load response in anisotropic materials due to their heterogeneous composition. This thesis demonstrates the fabrication of MM3DP samples using two distinctly different printing methods. The multi-material samples were extensively compared with the homogenous samples …
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Effect of Anisotropic Solid-Phase Thermal Conductivity on Vertical Bridgman Growth
The results for Bridgman growth of thermally anisotropic materials are illustrated for benzene, for which the thermal conductivity has been measured parallel and perpendicular to the growth direction of directionally solidified specimens. We study the effects of anisotropy by performing …
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Structural analysis and optimization with a locally-Cartesian Hybrid Shell Model
… full 3D geometries, large deformations, and anisotropic materials. HSM is formulated from the full 3D equilibrium and compatibility equations all projected onto local bases defined on the 2D shell manifold. General anisotropic constitutive equations are also formulated in the local 2D shell …
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Dynamic Analysis of Interfacial Cracks in Composite Laminates
… has been of great interest as composite materials are widely used today. In this paper, the order of dynamic stress singularity of interfacial cracks is derived, and a hybrid finite element method is successfully developed for this problem. Both the cases of open and closed cracks are …
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Materials with supramolecular chirality : liqid crystals and polymers for catalysis
… preorganization of molecules to create synthetic materials with controlled supramolecular architectures. Incorporation of polymerizable groups within a liquid crystalline template can set the stage for the synthesis of anisotropic molecular networks. This dissertation details the synthesis and …
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