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Gas-Filled Chip Bids to Outshine a Computer

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Science  17 May 2002:
Vol. 296, Issue 5571, pp. 1218-1219
DOI: 10.1126/science.296.5571.1218b

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Want to take in all the sights of London without wearing out your shoes or make all those sales visits in the shortest possible distance? Let some glowing helium gas do the walking. Researchers are taking a crack at the classic "traveling salesman problem" in an entirely new way: using a lab on a chip.