From Phys Org:
From solar cells that capture more light, to medical devices that resist colonization by bacteria; there are many applications for materials given a bristly coating of silicon nanowires. Creating these nanostructured silicon surfaces can be challenging—but A*STAR researchers have now discovered how to control at least one route.
Sing Yang Chiam at the A*STAR Institute of Materials Research and Engineering and his colleagues have now discovered the key governing mechanism by which MacEtch works. “We were very surprised by our discoveries,” says Chiam. “Only after many repeated tests, and studying it from many angles, did we become convinced by our model.”