Guardian: An ultra-sensitive form of the silicon used in most solar panels may soon help to harness the near limitless power of the sun. Thanks to an extremely rough surface, “black silicon” can absorb more light and can also trap a wider range of frequencies, including infra-red rays, that normally pass straight through standard silicon. Eric Mazur, a physicist at Harvard University, discovered black silicon by accident in his laboratory in 1998 when one of his research team blasted normal …