This gallery exhibits scanning electron microscope images of silicon micro- and nano-structures which were formed upon solidification of a highly-doped silicon wafer. The silicon was locally melted (at about 1400 degrees Celsius, or 2600 degrees Farenheit) by passing an electric current through a suspended section of the wafer, and then rapidly solidified. The intricate "frozen" geometries formed by competition of surface tension forces and crystallization forces.
 
These images will be featured in the February/March 2007 issue of SEED magazine.

Click a picture to see a larger view.

 

 
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c.2007 - ajhart at mit dot edu