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Engineers are near the outer limits of what can be done with optical lithography, the process by which light shone through a patterned mask defines the fine structures of microprocessors and memory chips. Now three teams of optics experts have independently hit upon what could turn out to be a way to extend optical lithography??s use??and, what??s even more critical, to do it cheaply.
For a century or more, nearly all technological advances have depended on our ability to produce and manipulate the vast variety of materials that nature has given us. Nowhere is that dependence more evident than in the field of electronics. From a smorgasbord of semiconductors, polymers, and metals, we've been able to create a dazzling array of circuitry that now underpins pretty much every aspect...
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