Nanofabricated ‘tetrakaidecahedrons’ could out-bulletproof kevlar – TechCrunch



Researchers at MIT and Caltech have created a nanoengineered materials that could possibly be harder than the likes of kevlar or metal. Product of interconnected carbon “tetrakaidecahedrons,” the fabric absorbed the influence of microscopic bullets in spectacular trend.

The examine, led by MIT’s Carlos Portela, aimed to seek out out whether or not nanoarchitected supplies — that’s, designed and fabricated on the scale of nanometers — could possibly be a viable path towards ultratough blast shields, physique armor and different protecting surfaces.

The thought of tetrakaidecahedron-based supplies, nevertheless, isn’t a brand new one. The advanced 14-sided class of polyhedron (there are about 1.5 billion doable variations) was proposed by Lord Kelvin within the 19th century as theoretically one of the crucial environment friendly doable for filling house with duplicates of itself.

If many such polyhedra might be packed right into a small house and interconnected, Portela and his colleagues questioned, would they act as an environment friendly shock absorber? Such supplies had been examined with sluggish deformations however not highly effective impacts such as you would anticipate from a bullet or micrometeoroid.

To seek out out, they assembled blocks of the fabric via nanolithography strategies, baking the ensuing construction till it was pure carbon. Then they shot these carbon buildings with 14-micron-wide silicon oxide bullets touring nicely above the pace of sound (although at these scales, the comparability is a bit quaint).

Close-up of silicon oxide 'bullet' embedded in the carbon material

Picture Credit: MIT/Caltech

The carbon buildings, particularly denser ones, absorbed the influence extraordinarily nicely, stopping the particle lifeless — and crucially, deforming however not shattering.

“We present the fabric can soak up numerous vitality due to this shock compaction mechanism of struts on the nanoscale versus one thing that’s absolutely dense and monolithic, not nanoarchitected,” mentioned Portela in a information launch describing the invention. “The identical quantity of mass of our materials could be far more environment friendly at stopping a projectile than the identical quantity of mass of Kevlar.”

Apparently, the researchers discovered they have been in a position to mannequin the influence and harm finest by utilizing strategies usually used to explain meteors impacting a planet’s floor.

That is simply an preliminary lab end result, so troopers gained’t be sporting tetrakaidecahedronal flak jackets any time quickly, however the experiment undoubtedly reveals the promise of this strategy. If the crew is ready to discover a solution to manufacture the fabric at scale, it could possibly be helpful in every kind of industries.

The examine was revealed within the journal Nature Supplies.


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