Multistable sheets with rewritable patterns for switchable shape-morphing

This dataset contains raw data and images used in "Multistable sheets with rewritable patterns for switchable shape-morphing", published in Nature in September 2023. The Version of Record is available online at: http://dx.doi.org/10.1038/s41586-023-06353-5.

In this paper we demonstrate "groovy sheets": undulating metasheets which store  memories of mechanical stimuli in patterns of self-stabilizing scars. After removing external stimuli, scars persist and force the sheet to switch to sharply selected curved, curled and twisted shapes. These stable shapes can be erased by appropriate forcing, allowing rewritable patterns and repeated and robust actuation. Our strategy is material-agnostic; extendable to other undulation patterns and instabilities; and scale-free, allowing applications from miniature to architectural scales.

The data in this replication package is organized in one directory for each main figure in the paper. File descriptions are included below.

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Fig 1: N/A

Fig 2:   

            Fig2d_data.csv. 3D-scanned sheet properties: sheet height profile, curvature data, and local coordinates

            Fig2g_data.csv. Sheet under point forcing: time-force-displacement data

Fig 3:

            Fig3a_slice_data.csv. 3D-scanned sheet properties: sheet height profile, curvature data, and slice coordinates

            Fig3c_model_node_data.csv. Modeled sheet data: node coordinates at initial and final stages

            Fig3c_model_bond_data.csv. Modeled sheet data: bond coordinates and bond spring types, and final spring strain

            Fig3f_experimental_sheet_shape_data.csv. Experimental twist angle versus sheet width

            Fig3f_numerical_sheetshape_data.csv. Numerical twist angle versus sheet width

Fig 4: N/A