IBM Corp. scientist Thomas Theis thinks desktop computers are too big and use too much energy. That goes for your digital camera and your portable music player and everything else with a silicon chip inside.

But Theis thinks he can solve the problem with carbon transistors just a couple of atoms thick and amoeba-sized optical chips that make light move in slow motion. Theis specializes in creating such super-small devices, and there are about 3,000 more scientists and engineers like him in Boston this week for Nanotech 2006, the world's largest nanotechnology trade show.

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http://www.boston.com/business/technology/articles/2006/05/09/nanotech_takes_on_chip_speed_price/

''What's really cool," said Theis, ''is this whole thing is the size of a protozoan."