New lightweight super material could battle bullets, deflect space debris UWMadison acsnano
"Our nanofiber mats exhibit protective properties that far surpass other material systems at much lighter weight," says Ramathasan Thevamaran, a UW–Madison assistant professor of engineering physics who led the research..
The advance lays the groundwork for carbon nanotube use in lightweight, high-performance armor materials, for example, in bulletproof vests to better protect the wearer or in shields around spacecraft to mitigate damage from flying high-speed microdebris. They found the right chemistry. The team synthesized Kevlar nanofibers and incorporated a tiny amount of them into theirmats, which created hydrogen bonds between the fibers. Those hydrogen bonds modified the interactions between the nanofibers and, along with just the right mixture of Kevlar nanofibers and carbon nanotubes, caused a dramatic leap in the overall material's performance.
Bring on the bullets. The researchers tested their new material using a laser-induced microprojectile impact testing system in Thevamaran's lab. One of only a handful like it in the United States, the system uses lasers to shoot micro-bullets into the material samples.
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