Department of Chemical and Biomolecular Engineering
Colors of Nature
Cross-polarized microscopy image of multilayered film consisting of alternate layers of an anti-cancer drug ellipticine and an edible polysaccharide polymer, pullulan. The nanothin film, produced by successive shearing of the drug and polymer solutions on silicon, embraces a magnificent morphology with needles and spherulites, that evokes colorful elements of nature unique to spectator’s imagination.