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 14 of 14 for “"Phase behaviors"”.
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Phase behaviors of ABAC tetrablock terpolymers
… the composition and the asymmetric effect on the phase behaviour of the tetrablock terpolymers using poly(styrene-b-isoprene-b-styrene-bethylene oxide) (SISO) as the model system, synthesized via a living anionic polymerization method and characterized with NMR, GPC, TEM, SAXS, DSC and DMS. In the …
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The Spark that Ignites the Creative Idea: An Examination of the Group Practice of LAUNCH
… idea generation, and electron-proton behaviors. Process maps of the group activities and artifacts demonstrate the continual tension along these continuums, which is supported by sentiment analysis of email interactions among group members. Plotted over time, sentiment analysis …
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Studies on neutron diffraction and X-ray radiography for material inspection
… the behavior of crystal structures and phase behaviors of materials. While neutron diffraction capabilities continue to explore new frontiers of materials science, such capabilities currently exist in limited places, which require high neutron flux. The study seeks to design a …
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Direct imaging of self-assembly behaviors of colloids: from the microscale plates to the nanoscale cubes
… structures and used as atomic model systems for phase transition studies such as crystallization and growth. The well-established synthetic library enables the synthesis of colloidal particles with controllable size, morphology, and surface chemistry, which dictates their interactions for …
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Investigation of Nanopore Confinement Effects on Convective and Diffusive Multicomponent Multiphase Fluid Transport in Shale using In-House Simulation Models
… and critical property shifts could alter the phase behaviors, thereby affecting the oil or gas production. In this research, two in-house simulation models, i.e., a compositionally extended black-oil model and a fully composition model are developed to examine the nano-pore confinement effects …
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Design and Characterization of Central Functionalized Asymmetric tri-Block Copolymer Modified Surfaces
… and different polymer materials (PS and PMMA). Phase behaviors of polymer thin films on unmodified and CFABC polymer brush modified silicon wafer surfaces were also studied. For thin films of polymer blends, PS blend PS-co-PMMA, the effects of film thickness, chemical composition and temperature …
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Vibrational Spectroscopy of Self-Forming Synthetic PEGylated Lipids and Nanovesicles
… This work focused on the study of thermotropic phase behaviors and associated changes in the conformational order/disorder of such lipids and nanovesicles in suspensions. For this purpose, variable-temperature sample holders have been designed and were employed to acquire the …
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Controlling nanostructures of globular protein-polymer block copolymers in bulk solutions and in thin films
… a strongly segregating polymer block. Common phase behaviors are also revealed, including the order of lyotropic order-order transitions and a re-entrant disordering behavior at high concentrations. Birefringence of the disordered solutions with increasing protein fraction suggests the …
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Rectangular Waveguide Filled with Uniaxial Medium and Negative Resistance Enhanced Composite Right/Left-Handed Transmission Line
… considered and the wave transmission and modal behaviors are investigated. When the optic axis is aligned with one of the coordinate axes, i. e., x, y, or z axis, the method of wave decomposition with respect to the optic axis orientation is proposed and the complete analytic solutions are …
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Interactions governing the self-assembly of globular protein-polymer block copolymers
… techniques were used to investigate the phase behaviors of globular protein-polymer block copolymers and provide insight into the relevant physics and thermodynamics governing their self-assembly. In particular, methodical permutations were made to the protein block to understand the …
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Neutron scattering investigations on the liquid-liquid transition in deeply cooled confined water
… mysterious. It exhibits anomalous thermodynamic behaviors at low temperatures. In addition, the glassy water, also called amorphous ice, exhibits polyamorphism. These phenomena could be understood if one accepts that a first-order low-density liquid (LDL) to high-density liquid (HDL) phase …
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Investigation of microstructure of disordered colloidal systems by small-angle scattering
… triblock copolymers. C-S-H is the main binding phase of ordinary Portland cements. An elaborate analytical model for the form factor of C-S-H basic building particles was established for the first time. This model has ability to integrate two different models together by taking two different …
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Condensation in horizontal smooth round tube
… contains three regions: superheated (SH), two-phase (TP) and subcooled (SC) regions. However, since phase change requires temperature gradient, the first droplet in heat exchanger occurs as soon as the temperature of inner wall drops below saturation temperature even though the bulk enthalpy …
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Accelerating Material Inverse Design in High-Dimensional Continuous Spaces with Autonomous Machine Learning Ecosystems
… constructing reliable models, evaluating phase stability, and identifying viable synthesis routes, all within a coherent and intelligent workflow. This thesis takes on these challenges by creating and applying machine learning frameworks across major computational materials research themes …