|Credit: Lawrence Barrett/BYU|
Researchers at Brigham Young University in Provo, Utah, made a tiny nano-cupid for Valentine's Day. The cupid's arm is the width of a human hair. The cupid was made from nanotubes, which are only about 20 atoms across. To make the tiny cupid, the scientists first put a pattern of microscopic iron particles on a plate. Next, they the blasted the plate with heated gas, which causes a miniature forest of carbon nanotubes to spring up. The tubes consist of 99 percent air.