ANN ARBOR—In a design that mimics a hard-to-duplicate texture of starfish shells, University of Michigan engineers have made rounded crystals that have no facets.
"We call them nanolobes. They look like little hot air balloons that are rising from the surface," said Olga Shalev, a doctoral student in materials science and engineering who worked on the project.
Both the nanolobes' shape and the way they're made have promising applications, the researchers say. The geometry could potentially be useful to guide light in advanced LEDs, solar cells and nonreflective surfaces.