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Rainbow crystal fan
Jessica Lynn Saylors '13, Anna Hiszpanski (graduate student), Yueh-Lin Loo (faculty)
Department of Chemical and Biological Engineering
Amorphous films of contorted hexabenzocoronene form two visually different types of crystals when annealed at 240 degrees Celsius. This sample was part of an experiment analyzing how crystals grow within a film. To track growth rates, crystallization was halted every minute, resulting in the concentric ring pattern in the large crystal. As the large crystal grew, it trapped a few of the smaller ones in its path, resulting in the varying diameters of small crystals within the large one.