Tiny knotted fibre leaps into the air like a springtail bug
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Researchers at the University of Pennsylvania and the University of California, Los Angeles, have created a tiny, soft knot-like fibre that can jump metres into the air.
The fibre is less than a millimetre thick, and a few millimetres long and contains a Kevlar core surrounded by a shell of liquid crystal elastomer (LCE).
The Kevlar provides strength and stiffness while the LCE adds some flexibility and responsiveness.
“People think of a knotted fibre as something passive,” says Shu Yang from t
The fibre is less than a millimetre thick, and a few millimetres long and contains a Kevlar core surrounded by a shell of liquid crystal elastomer (LCE).
The Kevlar provides strength and stiffness while the LCE adds some flexibility and responsiveness.
“People think of a knotted fibre as something passive,” says Shu Yang from t
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