Dissertation/Thesis Abstract

Modeling of interfaces: Applications in surface and polymer physics
by Patrone, Paul, Ph.D., University of Maryland, College Park, 2013, 178; 3599463
Abstract (Summary)

In this dissertation, I give an overview of my work on multiscale modeling of interfaces in crystalline and block-copolymer systems. I focus on two distinct interface systems: steps on vicinal surfaces and microdomain interfaces in block- copolymers melts. For each system, I consider how to (i) define the interface, (ii) derive a coarse-grained model of the interface, and (iii) use the model to study morphological features of the interface. For vicinal surfaces, we define a step by means of ensemble averages, which leads to a Burton-Cabrera-Frank (BCF) -type model of surface evolution. Using the BCF model, we study the combined effects of step interactions and fluctuations. For block-copolymers, we define the microdomain interfaces in terms of the relative density of monomers and use the Leibler-Ohta- Kawasaki phase-field Hamiltonian to study the line-edge roughness.

Indexing (document details)
Advisor: Einstein, Theodore L., Margetis, Dionisios
Commitee: Einstein, Theodore L., Gallatin, Gregg M., Margetis, Dionisios, Nochetto, Ricardo H., Weeks, John D.
School: University of Maryland, College Park
Department: Physics
School Location: United States -- Maryland
Source: DAI-B 75/02(E), Dissertation Abstracts International
Subjects: Polymer chemistry, Physics
Keywords: Asymptotic methods, Interfaces, Multiscale modeling, Polymer physics, Statistical mechanics, Surface physics
Publication Number: 3599463
ISBN: 978-1-303-48743-9
Copyright © 2020 ProQuest LLC. All rights reserved. Terms and Conditions Privacy Policy Cookie Policy