The newest research in body armor:

Bulletproofing for soldiers and law enforcement officers has lightened up considerably in recent years, but it promises to get insanely thin with new nanotechnology coming out of MIT and Rice University.

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The type of material, called a structured polymer composite, can actually self-assemble into alternating glassy and rubbery layers. When performing ballistic tests on the material at MIT’s Institute for Soldier Nanotechnologies, those 20-nanometer-thick layers were able to stop a 9-millimeter bullet and seal the entryway behind it, according to a Rice University article.

Here’s the Rice University article.