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This Soft Robot Mimics Plant Tendrils To Creep and Climb

This Soft Robot Mimics Plant Tendrils To Creep and Climb 1

Metal Vine

Soft robots have taken a page from the plant playbook. Using physical properties similar to those found in plants, researchers from the Istituto Italiano di Tecnologia (IIT) in Genoa, Italy have created a soft robot capable of creeping and climbing similar to the way plant vines do. Their research, published last week in the journal Nature Communicationscould lead to an new generation of soft robots and wearable technology, such as bracelets capable of altering their shape.

Smarty Plants

We don’t often think about movement in plants. One of the most commonly pictured examples of plant movement might be the closing of leaves in a carnivorous venus flytrap. But many kinds of plants move, their movement is just focused on which direction they slowly grow. In order to direct their growth, plants exploit water transport or osmosis within their cells.

IIT’s soft robot, which has a flexible polyethylene body filled with a liquid charged with ions, mimics this process. Using a low-voltage battery the flow of electrically-charged liquid within the robot can be directed to one side or the other. The movement of the liquid causes the robot to move in suite, allowing it to wind and creep similar to a plant vine. It’s simple enough to unwind the robot by reversing the polarity of the charge.

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