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 112 for “"Layered structure"”.
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Concepts for Mechanistic-Empirical Design Procedure for Extended Life Hot Mix Asphalt Pavements With a Multi-Layered Structure
… significantly by the thickness and multi-layered system of the pavements studied.
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Ab-initio study of cathode materials for lithium batteries
… principles calculations the effect of electronic structure on the stability of positive electrode materials for lithium rechargeable batteries is investigated. The investigation focuses upon lithiated α-NaFeO₂ type 3d transition metal oxide structures. It is found that the ligand field …
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Characterization of thermal dissipation within integrated gate bipolar transistor (IGBT) layered packaging structure
… Since IGBT chips are commonly mounted on a layered assembly structure which is in turn mounted onto a heat sink assembly, the thermal dissipation properties of the layered structure are crucial in keeping temperatures within operational boundaries. Traditionally, the selection of materials …
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Mechanical and metallurgical properties of two-layered diamalloy 4010 and 2002 HVOF coating
… wear. However, combination of these powders in layered structure, may offer advantages over the individual powders. In this case, mechanical properties of the resulting layered structure could be improved. Consequently, investigation into mechanical and metallurgical properties of the resulting …
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Synthesis and characterization of cobalt-containing perovskite-type oxides
… M = Fe, Mn, Cr, Ni; the materials adopted single layered, double-layered and simple perovskite-type structures. The materials La2 xSrxCo0.5M0.5O4 (M = Fe, Cr) have shown enhanced stability under reducing conditions (10% H2/N2, up to 1000 ºC) with the formation of oxygen deficient compounds, while …
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Polarization-independent Liquid Crystal Devices
… LC gels, thin polymer film separated double-layered structure, and double-layered LC gels. In the low voltage regime, both PDLC and PSCT have a strong light scattering. However, as the voltage exceeds a certain level, the phase modulation is scattering-free and is independent of polarization. …
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Mechanical failure of lithium-ion batteries
… the deformation mechanisms of the multi-layered structure of lithium-ion battery cells subjected to various loading conditions with particular emphasis on predicting the onset of the electrical short circuit. It starts with a comprehensive testing and modeling study of all the components …
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Temperature dependent magnetic order in FeOCl type compounds
… the orthorhombic space group Pmmn. They have a layered structure with each of the MOCl slabs containing a double MO layer sandwiched between Cl layers on each side. The slabs of MOCl are stacked along the lattice direction c and separated by van der Waals gaps. Within the MO layers, electrons on …
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Liquid foams of graphene
… with linear or branched chain molecular structures. This thesis presents a new class of liquid foams made with a foaming agent having a sheet molecular structure. In these foams, air bubbles are encapsulated inside graphene shells. The shells have a concentric layered structure made of …
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Lithium intercalation reactions with transition metal oxides
… sample has shown it to be best described as a layered structure (R3m symmetry) with approximately 6% of the cobalt cations in the predominantly lithium layer and vice versa. An acid-leached sample LT-Liₒ₄.4CoO₂ was, however, shown to have a defect spinel structure.
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Designing new electrode materials for energy devices by integrating ab initio computations with experiments
… active redox couple is confirmed in a new layered electrode material, Lio.gNi045Ti5502. First principles calculations combined with experiments show that the degree of cation disordering in the material arising from both synthesis conditions and the electrochemical reaction is critical in …
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Interrelationships of microstructure, stress and diffusion
… the stress states of all crystalline phases in a layered structure can be obtained separately. Moreover, additional microstructural information, as the crystallographic texture, the density of crystalline defects, such as dislocations, and the crystal size can be acquired from the collected XRD …
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Characterization and modeling of cell activation upon TGF-β1 stimulation in a 3-D culture system
… a thick in vitro 3-D cell culture model with layered structure and applied transforming growth factor-beta1 (TGF-β1) on the top of the 3-D culture to induce the conversion from normal fibroblasts to myofibroblasts and expression of a marker protein, alpha-smooth muscle actin (α-SMA). The cell …
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Electronic, thermoelectric and optical properties of vanadium oxides: VO2, V2O3 and V2O5
… performed one electron Kohn-Sham electronic band-structure calculations of VO_3, V_3O_3 and V_2O_5 in both metallic and insulating phases, implementing a full ab-initio simulation package based on Density Functional Theory (DFT), Plane Waves and Pseudopotentials (PPs). Electronic band structures …
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DENSE 3D HETEROGENEOUS INTEGRATION USING SELECTIVE COBALT ALD DEPOSITION AND RECONSTITUTED TIERS
… selective Co ALD bonding, a Cu/Gap/Cu three-layered structure, which emulates 3D ICs stacking, is fabricated and carefully characterized. The testbed shows seamless Co interconnection between the Cu pads after Co ALD deposition for 1000 cycles. The electrical measurements demonstrate over 90% …
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Worldview of Janina Degutytė: Poetry, Letters, and Autobiographic Texts /
… century. The study aims to portray the multi-layered structure of formation of the world awareness in the poet’s texts. A combination of phenomenological and sociocultural methodological approaches allows for the integration of poetry, biographical texts, and letters, unstudied before and …
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Antenna-coupled Tunnel Diodes For Dual-band Millimeter-wave/infrared F
… frequencies. The MOM diodes are fabricated in a layered structure of Ni-NiO-Ni, and act as rectifying contacts. With contact areas as low as 120 nm × 120 nm, these diodes have time constants commensurate with rectification at frequencies across the desired millimeter-wave and infrared …
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Crack Tip Micromaching by Femtosecond Laser for Fracture Testing of Metal Laminates
… provide insight into the plastic behavior of the layered structure.'
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Additively Manufactured Dielectric Elastomer Actuators: Development and Performance Enhancement
… growing areas of soft robotics and morphing structures promise endless opportunities in a wide range of engineering fields, including biomedical, industrial, and aerospace. Soft actuators and sensors are essential components of any soft robot or morphing structure. Among the utilized …
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Optical properties and structural characterization of ceramic crystals, pellets, and laser-ablation-deposited thin films
… are the novel compounds with the Aurivillius layered structure. Ferroelectric films of SrBi₂Ta₂O₉, seem to have promising properties, low fatigue and good hysteresis. In this thesis, structure and crystal vibrations in the films were investigated with Raman scattering, infrared absorption, and …
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