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Skiers Get d3o-Based 'Impact Suits'

In their 1971 novel The Flying Sorcerors, science fiction writers David Gerrold and Larry Niven wrote about an impossible idea - a suit that was both flexible all over and hard as armor all over:

It was my impact suit," Purple said. He took a step forward and thumped himself hard in the belly with this fist. His belly was big and soft, so the blow should have made him wince. It did not. I thought for a moment that Purple had become rigid as stone.

"My impact suit," he repeated. "Normally it flows like cloth, but under a sharp blow it becomes a single rigid unit.
(Read more about Gerrold and Niven's impact suit)

Thirty-five years later, US and Canadian skiers get to wear one! Spyder, a skiwear company based in Colorado, is working with d3o labs to incorporate a special material that hardens in "extreme" circumstances (like in a fall, for example).


(Racing 'armor')

The material is one of a class of similar materials that have been used for applications as diverse as body armor and rehabilitative exoskeletons. The material that d3o uses is a mixture of a viscous liquid and a polymer; once the d3o material has been synthesized, it is poured into a mold according to the application. When at rest (or when gently flexed), the molecules within the material can flow past one another. When a sudden deformation is applied, the molecules lock, forming a shield.


(d3o-based ski suits)

Although the material is available only to Olympic atheletes at the present time, Spyder will offer ski racing apparel with d3o technology starting in September of this year.

Find out about other uses for similar materials: take a look at Liquid Armor In Two Flavors: Shear Thickening and Magnetorheological and AKROD v2 - Active Knee Rehabilitation Device. Read more about ski suits at the d3o Lab website; thanks to Ruth Gough of d3o Lab for writing with this story.

Scroll down for more stories in the same category. (Story submitted 2/14/2006)

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