Engineers at CU Boulder have designed a new material that could pose strong competition to grasshoppers. Find out more at 🚀 engineering interestingengineering
Engineers at CU Boulder have designed a new material that could pose strong competition to grasshoppers. This new, rubber-like film can jump high into the air
Graphic showing how a cone slowly builds up in an"elastomer" film, then inverts to launch the film high into the air over the span of less than a second.The material was not a planned design. If anything, it was almost an accident. Hebner and her colleagues discovered the material's leaping behavior.
Small wafers of liquid crystal elastomers, about the contact lens size, were set on a hot plate. "As those films heated up, they began to warp, forming a cone that rose until, suddenly and explosively, it flipped inside out—shooting the material up to a height of nearly 200 times its thickness in just six milliseconds," according to the release.
According to White, each of these films is made of three elastomer layers. When they get hot, the layers shrink, and the top two layers shrink faster than the bottom. When combined with the orientation of the liquid crystal molecules within the layers, the film contracts and forms a cone shape.
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