pneumatic actuators tagged posts

Foldable Material can Change Size, Volume and Shape

Analysis of the possible shapes of the extruded cube unit cell.

Analysis of the possible shapes of the extruded cube unit cell.

Imagine a house that could fit in a backpack or a wall that could become a window with the flick of a switch. Harvard researchers have designed a new type of foldable material that is versatile, tunable and self actuated. It can change size, volume and shape; it can fold flat to withstand the weight of an elephant without breaking, and pop right back up to prepare for the next task.

“We’ve designed a three-dimensional, thin-walled structure that can be used to make foldable and reprogrammable objects of arbitrary architecture, whose shape, volume and stiffness can be dramatically altered and continuously tuned and controlled,” said Johannes T. B. Overvelde, graduate student in Bertoldi’s lab.

The structure is inspired by an or...

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