researchers at Florida State University's High-Performance Materials Institute (HPMI). Buckypaper sheets are made using densely packed single-walled carbon nanotubes.



Carbon nanotubes have specific mechanical properties that make them good candidates for the Air Force's work, says Ryne Raffaelle, director of the National Center for Photovoltaics at the U.S. Department of Energy's National Renewable Energy Laboratory. "In terms of strength-to-weight ratio, carbon nanotubes are stronger than steel but infinitely more flexible," he says.



A single carbon nanotube is typically about one nanometer in diameter (the approximate length of 10 atoms) and millions of times longer than it is wide, says Raffaelle, who previously served as director of the NanoPower Research Laboratory at the Rochester Institute of Technology (R.I.T.) in New York State, where he and his team conducted purity assessments ofUnderwater photography never gets old. It provides a look at a world most of us only dream of exploring. Anuar Patjane provides an intimate look at this wondrous place in Underwater Realm, a series of gorgeous black and white photos of sharks, whales and other amazing creatures.

Patjane first dove in Flekkefjord, Norway when he was 17. It was an introductory course, in a wetsuit, and the frigid sea was a shock. "My first thought when I jumped into those cold waters was, The instructor has to be kidding, this is impossible. But after I stopped feeling cold, it became an incredible experience, it was like discovering a whole new world,” Patjane says.

Now 34 and an old pro, Patjane spent five years photographing Realm. He shot most of them