Gold quantum dots | Science News

ADVERTISEMENT

MISSION CRITICAL

Support credible science journalism.

Subscribe to Science News today.


News

Gold quantum dots

By
3:38pm, September 7, 2004

From Philadelphia, at a meeting of the American Chemical Society

Scientists have created a new type of quantum dot that could find applications in everything from biological imaging to computer displays. Like their semiconductor counterparts (SN: 2/15/03, p. 107: NanoLights! Camera! Action!), these tiny clusters of gold atoms fluoresce brightly and emit different wavelengths of light when scientists vary the number of atoms in each cluster.

Robert Dickson and his colleagues at the Georgia Institute of Technology in Atlanta created the clusters by dissolving gold salts in a solution containing branched-polymer molecules called dendrimers. The dendrimers encapsulated the gold atoms, creating the nanometer-scale quantum dots.

This article is available only to subscribing members. Join the Society today or Log in.

Get Science News headlines by e-mail.

More from this issue of Science News

[title_1]
From the Nature Index Paid Content