NanoPen

These highly-magnified images are composed of tiny nanoparticles produced by a "NanoPen." Photo credit: Wikimedia Commons

Researchers in California are reporting development of a so-called "NanoPen" that could provide a quick, convenient way of laying down patterns of nanoparticles — from wires to circuits — for making futuristic electronic devices, medical diagnostic tests, and other much-anticipated nanotech applications.

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