Guiding crystallization around bends and sharp corners.

Lee, Stephanie S; Tang, Samuel B; Smilgies, Detlef-M; Woll, Arthur R; Loth, Marsha A; Mativetsky, Jeffrey M; Anthony, John E; Loo, Yueh-Lin · Adv Mater · 2012

basic_science · Level V

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Abstract

Control over the molecular orientation in organic thin films is demonstrated with precise in-plane spatial resolution over large areas. By exploiting the differential crystallization rates on substrates with different surface energies, the radial symmetry of spherulitic growth can be disrupted by preferentially selecting the molecular orientations that promote growth along the paths of the underlying patterns.

Medical subject headings