Directing the Assembly of Gold Nanoparticles within Engineered Smectic Defects at Double Undulated Surfaces
Date of Award
Campus Access Thesis
Master of Science (MS)
Mohamed A. Gharbi
Liquid crystals have drawn interest in the past decade due to their ability to trap colloidal objects in topological defects and direct their assembly into specific patterns. Recently, R. Preusse, et. al. demonstrated the ability to assemble these defects into pre-defined patterns based on surface topography. Here, we expand on this work, dispersing gold nanoparticles into smectic liquid crystal and observing the structures formed. We demonstrate the ability to trap and spontaneously assemble these gold nanoparticles into the defect lines formed by the surface topography. In this way, we show that, by engineering precise surface topographies, we can direct the assembly of nanoparticles into complex structures using liquid crystals.
O'Keefe, Mackenzie, "Directing the Assembly of Gold Nanoparticles within Engineered Smectic Defects at Double Undulated Surfaces" (2021). Graduate Masters Theses. 679.
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