Dr Kamat and his team covered the surface of an experimental cell made of cadmium sulphide, zinc oxide and titanium dioxide with nanotubes, so that the tubes stuck up from the surface like hairs.

ECONOMIST: Improved devices may make better use of sunlight

Sweden's Sandvik (6.6, SDVKY) fell 70% in the bear market as the recession whacked sales of its metal-cutting, mining and construction tools as well as specialty alloys based on titanium and zirconium, used in thousands of applications like boiler tubes and flanges.

FORBES: Blink And You'll Miss It