RICHARDSON, Texas - Imagine singing "Oh, say, can you see" to a flag you can't see. That's what graduate students at the University of Texas at Dallas had in mind when they created the likeness of an American flag so small it would take more than 10 to span the width of a human hair. While the work of electrical engineering students Jang-Bae Jeon and Carlo Foresca has so far been rejected by the Guinness Book of World Records, they hope the process will lead to advances in nanotechnology, a world of creations viewed only through microscopes. "Most of this...