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Journal Articles Science Year : 2023

Pneumatic cells toward absolute Gaussian morphing

Abstract

On a flat map of the Earth, continents are inevitably distorted. Reciprocally, curving a plate simultaneously in two directions requires a modification of in-plane distances, as Gauss stated in his seminal theorem. Although emerging architectured materials with programmed in-plane distortions are capable of such shape morphing, an additional control of local bending is required to precisely set the final shape of the resulting three-dimensional surface. Inspired by bulliform cells in leaves of monocotyledon plants, we show how the internal structure of flat panels can be designed to program bending and in-plane distortions simultaneously when pressurized, leading to a targeted shell shape. These surfaces with controlled stiffness and fast actuation are manufactured using consumer-grade materials and open a route to large-scale shape-morphing robotics applications.
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Dates and versions

hal-04268881 , version 1 (02-11-2023)

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Tian Gao, José Bico, Benoît Roman. Pneumatic cells toward absolute Gaussian morphing. Science, 2023, 381 (6660), pp.862-867. ⟨10.1126/science.adi2997⟩. ⟨hal-04268881⟩
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