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Plants that can move inspire new adaptive structures
Date:2/19/2011

ydraulics, the researchers say.

"We know that plants can deform with large actuation through this pumping action," Wang said. "This and several other characteristics of plant cells and cell walls have inspired us to initiate ideas that could concurrently realize many of the features that we want to achieve for adaptive structures."

Nielsen believes nastic movements might be a good place to start trying to replicate plant motions because they don't require new growth or a reorganization of cells.

"These rapid, nastic motions are based on cells and tissues that are already there," Nielsen said. "It's easy for a plant to build new cells and tissues during growth, but it's not as easy to engineer an object or machine to completely change the way it's organized. We hope studying these motions can inform us about how to make efficient adaptive materials that display some of the same types of flexibility that we see in biological systems."

When this technology matures, Wang said it could enable robots that change shape like elephant trunks or snakes to maneuver under a bridge or through a tunnel, but then turn rigid to grab a hold of something. It also could lead to morphing wings that would allow airplanes to behave more like birds, changing their wing shape and stiffness in response to their environment or the task at hand.


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Contact: Nicole Casal Moore
ncmoore@umich.edu
734-647-7087
University of Michigan
Source:Eurekalert

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