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.