Fast, cheap and colorful 3-D printing

People are exploring the use of 3-D printing for wide-ranging applications, including manufacturing, medical devices, fashion and even food. But one of the most efficient forms of 3-D printing suffers from a major drawback: ...

Using gold particles to make the invisible visible

Gold nanoparticles give us a better understanding of enzymes and other molecules. Biswajit Pradhan, Ph.D. candidate at the Leiden Institute of Physics, uses gold nanorods to study individual molecules that would be challenging ...

A dash of gold improves microlasers

Gold. The word brings to mind wedding rings, buried treasure and California in the 1840's. But when gold is reduced to 1/100,000 the size of a human hair, it takes on an entirely new personality.

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