You don’t usually associate IBM with the solar power industry. But IBM researchers couldn’t help but notice that one of the main difficulties in compressing the size of a solar collector, in a miniaturization process called “concentrator photovoltaics,” (CPV) is the dissipation of heat. IBM used a lens to concentrate sunlight on a one centimeter square solar cell, which yielded 70 watts of usable power — a record amount. But the heat produced would melt stainless steel. But then again, dissipation of heat from