Detonating silicon wafers can ID elements

In a serendipitous discovery, chemists have found a convenient way to make silicon–the stuff of computer chips–explode on command.

Porous silicon in the act of exploding. Mikulec/Advanced Materials

Wafers of specially processed silicon might someday serve in miniature propulsion systems, ignition systems for explosives, or portable detectors for identifying water contaminants, says Michael J. Sailor of the University of California, San Diego, who led the research.