Please use this identifier to cite or link to this item:
http://hdl.handle.net/11375/16667
Title: | Laser Lithography of Diblock Copolymer Films |
Authors: | Parete, Joseph |
Advisor: | Preston, John S. Dalnoki-Veress, Kari |
Department: | Engineering Physics |
Keywords: | laser lithography;diblock copolymer;film thickness;pattern growth |
Publication Date: | Sep-2008 |
Abstract: | Laser lithography was used to create novel patterns in thin diblock copolymer films. These patterns were characterized and an examination of their formation and growth was conducted. The patterns occurred only in diblock films, due to the interaction between thermal gradient induced Marangoni flow and the self assembly of the molecules. Growth of the patterns was found to be strongly dependent on absorbed power. The impact of film thickness on pattern growth was mainly due to the corresponding changes in sample reflectance, however a periodic patterning was observed suggesting that growth is also dependent on the amount of 'excess' material (over that required to form complete lamella) available. It was also shown that the pattern growth can occur independently of laser lithography and the Marangoni effect, though laser lithography was required to direct this growth. |
URI: | http://hdl.handle.net/11375/16667 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Parete Joseph.pdf | Thesis | 20.39 MB | Adobe PDF | View/Open |
Items in MacSphere are protected by copyright, with all rights reserved, unless otherwise indicated.