Micro Microwave Does Pinpoint Cooking for Miniaturized Labs

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Photograph of the NIST micro microwave oven. The gold traces on the glass circle are microwave transmission lines. The 1.25 cm wide polymer block over the transmission line in the center houses a miniature chamber in which a pinhead-sized drop of flu ...
Photograph of the NIST micro microwave oven. The gold traces on the glass circle are microwave transmission lines. The 1.25 cm wide polymer block over the transmission line in the center houses a miniature chamber in which a pinhead-sized drop of fluid is heated. Credit: NIST

Researchers at the National Institute of Standards and Technology and George Mason University have demonstrated what is probably the world’s smallest microwave oven, a tiny mechanism that can heat a pinhead-sized drop of liquid inside a container slightly shorter than an ant and half as wide as a single hair. The micro microwave is intended for lab-on-a-chip devices that perform rapid, complex chemical analyses on tiny samples.


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