Aligned carbon nanotubes
By Junbing Yang
Scientists grow these extremely tiny "nanotubes" out of carbon for a variety of technologies. Carbon nanotubes are already in electronics, boat hulls, tennis rackets, wind turbine blades, and more, but researchers have many more ideas for future technology. This is an image straight from a scanning electron microscope without any alteration.
Aligned carbon nanotubes with open-end structure.