CHED 330 |
| Precursors to poly(methyl methacrylate) [PMMA] photonic crystals were prepared by suspending PMMA beads in de-ionized water and then depositing them on various substrates for the purpose of analysis and characterization. It was found that the PMMA beads readily crystallized on solid substrates such as glass, but resulted in imperfect films with multiple, non-uniform layers. Similar assemblies were also formed on the surfaces of other substrates such as oils (e.g., PDMS) and other organic liquids which resulted in more favorable, uniform crystals having a thickness of only a single layer. Using PMMA as the polymeric component of these photonic crystal precursors makes patterning by e-beam lithography possible as well as the incorporation of fluorescent dyes in order to modify the resulting band-gap structure, thereby affording the photonic crystal properties ultimately desired. |
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Undergraduate Research Poster Session: Nanotechnology
11:00 AM-1:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster
Division of Chemical Education |