Friday 24 June 2011

galvanized

Score another point for Science. Researchers and smithies from the University of Minnesota, according to Popular Science, have developed an alloy (Ni45Co5Mn40Sn10, Nickel, Cobalt, Manganese and Tin) that has both magnetic and ferroelectric properties—maybe something like a piezoelectric element in a cigarette lighter but do see the excellent primer and video of the magnet in action in the magazine—which has the ability to convert heat directly into electricity. When warmed, the alloy oscillates between physical phases actually turning it from something nonconductive into something highly magnetized. Personally, I can recall being a bit disappointed to learn how nuclear reactors work—that they are glorious cathedrals of steam, that the nuclear energy source is just a means of heating up water to turn a turbine, the same for the massive solar collectors in the Spanish desert or solar panels that provide hot water. These things are certainly accomplishments but the bother does not result—at least to my mind, in something as keen and imaginative as producing electricity directly through what is generally a by-product. There are plenty of heat sources that could be contenders, from the recently reviled and outlawed incandescent light bulb, to the heat from automotive exhaust and combustion—hybrid cars could capture the heat generated when running off of gasoline to recharge an empty battery—smoke-stacks, factories and cooling towers could recycle the heat and put it in the supply as well