Science Advances

Supplementary Materials

This PDF file includes:

  • Supplementary text
  • Fig. S1. BCH2, BCH3, and their combinations with rows of small and/or large parallelograms.
  • Fig. S2. Constrained DOF by implicit formation of the structure of the Miura-ori unit cell between adjoining unit cells of BCH2 and BCH3 in the pattern.
  • Fig. S3. Concept of Poisson’s ratio considering end-to-end dimensions.
  • Fig. S4. Geometry of a Miura-ori cell.
  • Fig. S5. In-plane stiffness for BCH2 with a = b = 1.
  • Fig. S6. Behavior of a BCH3 sheet upon bending and results of the eigenvalue analysis of a 3 × 3 pattern of BCH3.
  • Fig. S7. Behavior of a sheet of the pattern shown in Fig. 3C upon bending and results of the eigenvalue analysis of a 2 × 3 sheet of the pattern.
  • Fig. S8. Behavior of a sheet of the pattern shown in Fig. 3D upon bending and results of the eigenvalue analysis of a 2 × 3 sheet of the pattern.
  • Table S1. Main points of the in-plane Poisson’s ratio of the class of zigzag-base folded metamaterials.
  • Legends for movies S1 to S3
  • Reference (38)

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Other Supplementary Material for this manuscript includes the following:

  • Movie S1 (.mov format). In-plane behavior of the patterns.
  • Movie S2 (.mov format). A cellular folded metamaterial made by stacking seven layers of a 3 × 3 sheet of BCH2 pattern with two different geometries.
  • Movie S3 (.mov format). Out-of-plane behavior of the patterns.

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