Quantum onions rarely blink

By adding a thin impurity layer to a cluster of atoms known as a quantum dot, researchers have created a structure whose steady glow under laser light may prove useful.

References:

Koberling, F., A. Mews, and T. Basché. In press. Single dot spectroscopy of CdS nanocrystals and CdS/HgS. Physical Review B.

Mews, A. 1999. Quantum wells within quantum dots, a CdS/HgS nano heterostructure with global and local confinement. Meeting of the American Physical Society. March. Atlanta.

Further Readings:

Weiss, P. 1998. Brighter bulbs light up cell innards. Science News 154(Oct. 24):271.

Wu, C. 1996. Drawing a bead on quantum dot lasers. Science News 150(Nov. 23):327.

Sources:

Alf Mews
University of Mainz
Institute for Physical Chemistry
Welderweg 11
D-55099 Mainz
Germany

From Science News, Vol. 155, No. 14, April 3, 1999, p. 223. Copyright © 1999, Science Service.

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