What do a butterfly’s shimmering wings, a fish’s opalescent scales, and a peacock’s brilliant feathers have in common? Yes, their colors are beautifully iridescent. But they are also produced by the physical interaction of light with sophisticated nanoscale architecture that we are only just beginning to understand. read more

Dan Janzen, a professor in Penn’s Department of Biology in the School of Arts & Sciences, has spent the last two years in collaboration with Shu Yang, a professor in the School of Engineering and Applied Science’s Department of Materials Science and Engineering. The two share a common interest: The […]