Some inventions and discoveries are accidents or the unexpected result of experiments.

http://www.livescience.com/images/051021_white_light_03.jpg http://www.livescience.com/images/051020_nano_light_02.jpg
   led excitation                             laser excitation
* A new source of light - via QuantumDots, the conventional lightbulb may be a thing of the past in a few years:
** http://www.livescience.com/technology/051021_nano_light.html

http://images.livescience.com/images/050415_nanoprobe1_01.jpg
  More uses of QuantumDots -- tracing cell movement
** http://www.livescience.com/technology/050415_nano_probes.html
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CategoryNanotechnology