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Engine on a chipISA InTech, September 28, 2006 Engine on a chip A tiny gas-turbine engine inside a silicon chip about the size of a quarter could run 10 times longer than a battery of the same weight can, powering laptops, cell phones, radios, and other electronic devices. It could also dramatically lighten the load for people who can’t connect to a power grid, including soldiers who now must carry many pounds of batteries for a three-day mission. All this technology can come at a reasonable price. In the long term, mass production could bring the per-unit cost of power...