Courtesy of Dr. Young Sil Lee/U.S.
Army Research Laboratory
The secret is a liquid dip that fortifies thin sheets of Kevlar, rendering them nearly impenetrable. Norman Wagner, a chemical engineer at the University of Delaware, developed the strength-enhancing substance after studying liquids whose viscosity or stiffness loosens up when they are stirred or shaken (latex paint, for instance). He then became interested in other liquids that do just the oppositeÂbecoming more resistant when suddenly disturbedÂand started experimenting with ways to exploit that property.
Just what I need for that trip to the end of the road, or next time i get a late night bus thought that not so safe part of town.