Date of Graduation

5-2018

Document Type

Thesis

Degree Name

Master of Science in Mechanical Engineering (MSME)

Degree Level

Graduate

Department

Mechanical Engineering

Advisor

Paul Millett

Committee Member

Arun Nair

Second Committee Member

Min Zou

Keywords

Simulation, Spinodal Decomposition, Thin-film

Abstract

Preferential wetting can have a significant impact on the kinetics of phase separation in

certain systems. The depletion of the wetting component can simply alter domain growth

rates or change the structure entirely. In this thesis, we employ a Cahn-Hilliard model to

study the evolution of binary thin-films with symmetric surface wetting. Three possible

morphologies were identified: discrete, bicontinuous, and a novel quasi-2D bicontinuous

structure in which both phases retain continuity throughout the volume as well as on

the center xy plane. Using a continuity factor, regions of film thickness versus blend

composition were classified as producing a certain morphology. This region was then

extended to further explore the possibilities offered by symmetric surface wetting. This

information can guide future researchers to novel morphologies.

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