High-tech mimicking of nature could improve many products COLUMBUS, Ohio, Nov. 7 (UPI) -- U.S. researchers say nanotech versions of butterfly wings and plant leaves may produce high-tech surfaces that could improve a variety of products. Researchers at Ohio State University said they were able to clean up to 85 percent of dust off a coated plastic surface that mimicked the texture of a butterfly wing, compared to only 70 percent off a flat surface. The researchers said such textures could enhance fluid flow and prevent surfaces from getting dirty, characteristics that could be applied to surfaces for aircraft and watercraft, pipelines and medical equipment. "Nature has evolved many surfaces that are self-cleaning or reduce drag," mechanical engineering Professor Bharat Bhushan said in an OSU release. Reduced drag is desirable for industry, whether you're trying to move a few drops of blood through a nano-channel or millions of gallons of crude oil through a pipeline. And self-cleaning surfaces would be useful for medical equipment -- catheters, or anything that might harbor bacteria. The researchers studied wings of the Giant Blue Morpho butterfly and leaves of the rice plant Oriza sativa, then cast plastic replicas of both microscopic textures to examine their ability to repel dirt and water. The surface texture of the butterfly's wing resembles a clapboard roof with rows of overlapping "shingles" radiating out from the butterfly's body, suggesting water and dirt roll off the wings "like water off a roof," Bhushan said.