Dr. Minteer and her colleagues are focusing on small-scale applications, with the preliminary fuel cells being no bigger than five square centimeters -- about the size of a postage stamp. "We've tested probably 30 to 50 of the ethanol cells," she said. They have successfully run their cells with vodka, gin, white wine, and flat beer ("The fuel cell didn't like the carbonation," according to Dr. Minteer).
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