Figure 1. (IMAGE) Science China Press Caption Design and fabrication principle of the MAIPAMs. (A) Schematic of the skeleton-free muscular hydrostats. (B) The morphology of the designed MAIPAMs. (C) Multiple-mode actuations of the MAIPAMs. (D) Schematic of the planar design and assembly of the MAIPAMs. (E) Working principle of the one-step fabrication approach for the MAIPAMs. Credit @Science China Press Usage Restrictions Use with credits License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.