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Liquid Body Armor : Shear-thickening Fluids

« The term « liquid body armor » can be a little misleading. For some people, it brings to mind the idea of moving fluid sandwiched between two layers of solid material. However, both types of liquid armor in development work without a visible liquid layer. Instead, they use Kevlar that has been soaked in one of two fluids. »

Source : http://science.howstuffworks.com/liquid-body-armor1.htm